© 2006 Microchip Technology Inc. DS51571B
MCP212X
Developer’s Daughter Board
User’s Guide
DS51571B-page ii © 2006 Microchip Technology Inc.
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In-Circuit Serial Programming, ICSP, ICEPIC, Linear Active
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Note the following details of the code protection feature on Microchip devices:
• Microchip products meet the specification contained in their particular Microchip Data Sheet.
• Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the
intended manner and under normal conditions.
• There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our
knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip’s Data
Sheets. Most likely, the person doing so is engaged in theft of intellectual property.
• Microchip is willing to work with the customer who is concerned about the integrity of their code.
• Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not
mean that we are guaranteeing the product as “unbreakable.”
Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our
products. Attempts to break Microchip’s code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts
allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act.
Microchip received ISO/TS-16949:2002 certification for its worldwide
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PICmicro® 8-bit MCUs, KEELOQ® code hopping devices, Serial
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manufacture of development systems is ISO 9001:2000 certified.
MCP212X DEVELOPER’S
DAUGHTER BOARD USER’S GUIDE
© 2006 Microchip Technology Inc. DS51571B-page iii
Table of Contents
Preface ........................................................................................................................... 1
Introduction............................................................................................................ 1
Document Layout .................................................................................................. 2
Conventions Used in this Guide ............................................................................ 3
Recommended Reading........................................................................................ 4
The Microchip Web Site ........................................................................................ 5
Customer Support ................................................................................................. 5
Document Revision History ................................................................................... 5
Chapter 1. Product Overview ....................................................................................... 7
1.1 Introduction ..................................................................................................... 7
1.2 What is the MCP212X Developer’s Daughter Board? .................................... 7
1.3 What the MCP212X Developer’s Daughter Board Kit Includes ...................... 8
Chapter 2. Installation and Operation ......................................................................... 9
2.1 Introduction ..................................................................................................... 9
2.2 Features ....................................................................................................... 10
2.3 Getting Started ............................................................................................. 11
2.4 Making a Demo System ............................................................................... 16
2.5 MCP212X Developer’s Daughter Board Description .................................... 18
Appendix A. Schematic and Layouts ........................................................................ 21
A.1 Introduction .................................................................................................. 21
A.2 Schematics and PCB Layout ....................................................................... 21
A.3 Board Schematic – Page 1 ........................................................................ 22
A.4 Board Schematic – Page 2 ........................................................................ 23
A.5 Board Layout – Component Layer ............................................................. 24
A.6 Board Layout – Top Layer .......................................................................... 25
A.7 Board Layout – Bottom Layer .................................................................... 26
Appendix B. Bill Of Materials (BOM) ......................................................................... 27
Appendix C. Board Testing ........................................................................................ 29
C.1 What is Tested ............................................................................................. 29
C.2 What is NOT Tested .................................................................................... 29
Appendix D. Using the MCP212X Developer’s Daughter Board with the
PICDEM™ HPC Explorer Demo Board ................................................ 31
D.1 demonstration using two PICDEM™ HPC Explorer Demo Boards ............. 31
MCP212X Developer’s Daughter Board User’s Guide
DS51571B-page iv © 2006 Microchip Technology Inc.
Appendix E. Using the MCP212X Developer’s Daughter Board with the
PICDEM™ FS USB Demo Board ...........................................................37
E.1 Demonstration with the PICDEM FS USB Demo Board .............................. 37
Appendix F. Configuring the HyperTerminal® Program ..........................................41
F.1 Configuring the Hyperterminal® Program .................................................... 41
Worldwide Sales and Service .....................................................................................46
MCP212X DEVELOPER’S
DAUGHTER BOARD USER’S GUIDE
© 2006 Microchip Technology Inc. DS51571B-page 1
Preface
INTRODUCTION
This chapter contains general information that will be useful to know before using the
MCP212X Developer’s Daughter Board. Items discussed in this chapter include:
• Document Layout
• Conventions Used in this Guide
• Recommended Reading
• The Microchip Web Site
• Customer Support
• Document Revision History
NOTICE TO CUSTOMERS
All documentation becomes dated, and this manual is no exception. Microchip tools and
documentation are constantly evolving to meet customer needs, so some actual dialogs
and/or tool descriptions may differ from those in this document. Please refer to our web site
(www.microchip.com) to obtain the latest documentation available.
Documents are identified with a “DS” number. This number is located on the bottom of each
page, in front of the page number. The numbering convention for the DS number is
“DSXXXXXA”, where “XXXXX” is the document number and “A” is the revision level of the
document.
MCP212X Developer’s Daughter Board User’s Guide
DS51571B-page 2 © 2006 Microchip Technology Inc.
DOCUMENT LAYOUT
This document describes how to use the MCP212X Developer’s Daughter Board. The
manual layout is as follows:
•Chapter 1. “Product Overview” – Important information about the MCP212X
Developer’s Daughter Board.
•Chapter 2. “Installation and Operation” – Includes a detailed description of
each function, as well as instructions on how to get started with this daughter
board.
•Appendix A. “Schematic and Layouts” – Shows the schematic and layout
diagrams for the MCP212X Developer’s Daughter Board.
•Appendix B. “Bill Of Materials (BOM)” – Lists the parts used to build the
MCP212X Developer’s Daughter Board.
•Appendix C. “Board Testing” – Discusses the testing of the MCP212X
Developer’s Daughter Board in several configurations.
•Appendix D. “Using the MCP212X Developer’s Daughter Board with the
PICDEM™ HPC Explorer Demo Board” – Shows how the MCP212X
Developer’s Daughter Board can be demonstrated using the PICDEM™ HPC
Explorer Demo Board.
•Appendix E. “Using the MCP212X Developer’s Daughter Board with the
PICDEM™ FS USB Demo Board” – Shows how the MCP212X Developer’s
Daughter Board can be demonstrated using the PICDEM™ FS USB Demo Board.
•Appendix F. “Configuring the HyperTerminal® Program” – Shows the
configuration of the HyperTerminal program used to demonstrate the MCP212X
Developer’s Daughter Board system.
Preface
© 2006 Microchip Technology Inc. DS51571B-page 3
CONVENTIONS USED IN THIS GUIDE
This manual uses the following documentation conventions:
DOCUMENTATION CONVENTIONS
Description Represents Examples
Arial font:
Italic characters Referenced books MPLAB® IDE User’s Guide
Emphasized text ...is the only compiler...
Initial caps A window the Output window
A dialog the Settings dialog
A menu selection select Enable Programmer
Quotes A field name in a window or
dialog
“Save project before build”
Underlined, italic text with
right angle bracket
A menu path File>Save
Bold characters A dialog button Click OK
A tab Click the Power tab
N‘Rnnnn A number in verilog format,
where N is the total number of
digits, R is the radix and n is a
digit.
4‘b0010, 2‘hF1
Text in angle brackets < > A key on the keyboard Press <Enter>, <F1>
Courier New font:
Plain Courier New Sample source code #define START
Filenames autoexec.bat
File paths c:\mcc18\h
Keywords _asm, _endasm, static
Command-line options -Opa+, -Opa-
Bit values 0, 1
Constants 0xFF, ‘A’
Italic Courier New A variable argument file.o, where file can be
any valid filename
Square brackets [ ] Optional arguments mcc18 [options] file
[options]
Curly brackets and pipe
character: { | }
Choice of mutually exclusive
arguments; an OR selection
errorlevel {0|1}
Ellipses... Replaces repeated text var_name [,
var_name...]
Represents code supplied by
user
void main (void)
{ ...
}
MCP212X Developer’s Daughter Board User’s Guide
DS51571B-page 4 © 2006 Microchip Technology Inc.
RECOMMENDED READING
This user's guide describes how to use the MCP212X Developer’s Daughter Board.
The following Microchip documents are available and recommended as supplemental
reference resources.
MCP2122 Data Sheet (DS21894)
This data sheet provides detailed information regarding the MCP2122 device.
MCP2120 Data Sheet (DS21618)
This data sheet provides detailed information regarding the MCP2120 device.
AN946, “Interfacing the MCP2122 to Host Controller” (DS00946)
This application note discusses the interface between a Host Controller and the
MCP2122 device.
TB073, “Selecting a MCP21XX Device for IrDA® Applications” (DS91073)
This technical brief discusses the selection of the MCP21XX devices for IrDA®
standard applications.
AN756, “Using the MCP2120 for Infrared Communications” (DS00756)
This application note discusses the encoding/decoding function of the MCP2120 as
specified in the physical layer component of the IrDA® standard.
AN923, “Using the MCP2120 Developer’s Board for “IR Sniffing” (DS00923)
This application note discusses how one can use the MCP2120 Developer’s Board for
“IR Sniffing”. This technique can assist in the debugging of an IrDA® standard system.
The following documents may be useful, depending on which PICDEM™ demo
board you are using with the MCP212X Developer’s Daughter Board.
PIC18F8722 Family Data Sheet (DS39646)
This data sheet provides detailed information regarding the PIC18F8722 device. This
device is used on the PICDEM™ HPC Explorer Demo Board (DM183022).
PICDEM™ 2 Plus Demo Board User’s Guide (DS51275)
This user’s guide provides detailed information regarding the PICDEM™ 2 Plus Board
(DM163022).
PIC16F87XA Family Data Sheet (DS39582)
This data sheet provides detailed information regarding the PIC16F87XA device. This
device is used on the PICDEM™ 2 Plus Demo Board (DM163022).
PICDEM™ FS USB Demonstration Board User’s Guide (DS51526)
This user’s guide provides detailed information regarding the PICDEM™ Full-Speed
USB Demo Board (DM163025).
PIC18F4550 Data Sheet (DS39632)
This data sheet provides detailed information regarding the PIC18F4550 device. This
device is used on the PICDEM™ Full-Speed USB Demo Board (DM163025).
PICDEM™ LCD Demo Board User’s Guide (DS51536)
This user’s guide provides detailed information regarding the PICDEM™ LCD
Demo Board (DM163028).
PIC18F8490 Data Sheet (DS39629)
This data sheet provides detailed information regarding the PIC18F8490 device. This
device is used on the PICDEM™ LCD Demo Board (DM163028).
Preface
© 2006 Microchip Technology Inc. DS51571B-page 5
THE MICROCHIP WEB SITE
Microchip provides online support via our web site at www.microchip.com. This web
site is used as a means to make files and information easily available to customers.
Accessible by using your favorite Internet browser, the web site contains the following
information:
•Product Support – Data sheets and errata, application notes and sample
programs, design resources, user’s guides and hardware support documents,
latest software releases and archived software
•General Technical Support – Frequently Asked Questions (FAQs), technical
support requests, online discussion groups, Microchip consultant program
member listing
•Business of Microchip – Product selector and ordering guides, latest Microchip
press releases, listing of seminars and events, listings of Microchip sales offices,
distributors and factory representatives
CUSTOMER SUPPORT
Users of Microchip products can receive assistance through several channels:
• Distributor or Representative
• Local Sales Office
• Field Application Engineer (FAE)
• Technical Support
• Development Systems Information Line
Customers should contact their distributor, representative or field application engineer
(FAE) for support. Local sales offices are also available to help customers. A listing of
sales offices and locations is included in the back of this document.
Technical support is available through the web site at: http://support.microchip.com
DOCUMENT REVISION HISTORY
Revision B (July 2006)
• Add disclaimer to Bill of Materials regarding RoHS-Compliant part numbers.
Revision A (August 2005)
• Initial Release of this Document.
MCP212X Developer’s Daughter Board User’s Guide
DS51571B-page 6 © 2006 Microchip Technology Inc.
NOTES:
MCP212X DEVELOPER’S
DAUGHTER BOARD USER’S GUIDE
© 2006 Microchip Technology Inc. DS51571B-page 7
Chapter 1. Product Overview
1.1 INTRODUCTION
This chapter provides an overview of the MCP212X Developer’s Daughter Board and
covers the following topics:
• What is the MCP212X Developer’s Daughter Board?
• What the MCP212X Developer’s Daughter Board kit includes
1.2 WHAT IS THE MCP212X DEVELOPER’S DAUGHTER BOARD?
The MCP212X Developer’s Daughter Board is used to evaluate and demonstrate the
MCP2122 or MCP2120 IrDA® Standard Encoder/Decoder device. This allows the
system designer to implement a low-cost, wireless IR port in any application providing
support for IrDA standard bit encoding/decoding.
The MCP212X Developer’s Daughter Board is designed to interface to several of the
“new” low-cost PICmicro® microcontroller-based demonstration (demo) boards, or to
be interfaced into your application. Multiple header interfaces are available that allow
support for the many different PICDEM™ Demo Boards, as well as being easily
jumpered into systems for development purposes. Table 1-1 shows some of the
PICDEM demo boards that are supported.
Depending on the features of the PICmicro Microcontroller Unit (MCU) and the
selected demo board, the MCP2122 TX and RX signals can either be connected
(jumpered) directly to the RS-232 line driver or to the PICmicro MCU’s RX and TX
signals. The PICmicro MCU could process that data and then send it out of the UART.
TABLE 1-1: PICDEM™ DEMO BOARD SUPPORT (1)
Name Order
Number Literature #
Host Controller
(PICmicro® MCU)
Supported
Header(s)
Used
TX/RX Signals to (3)
Host
Controller RS-232
PICDEM™ HPC Explorer Board (2) DM183022 DS51540 PIC18F8722 J1, J2 Y Y
PICDEM™ LCD DM163028 DS51536 PIC18F8490 J1, J2 Y Y
PICDEM™ Full-Speed USB DM163025 DS51526 PIC18F4550 J3 Y N/A
PICDEM™ 2 Plus DM163022 DS51275 PIC16F877,
PIC18F452
J3 Y N
User Embedded System N/A — — HD1 Y —
Note 1: Other boards may also be supported. Please refer to the MCP212X Developer’s Daughter Board and
desired PICDEM™ Demo Board documentation to determine if the boards you are using are supported.
2: For proper orientation of the daugter board to the PICDEM™ demo board, Revision 5 of the PICDEM™
HPC Explorer Board is recommended. Revision 4 will function, but the direction of the optical transceiver
will be facing the same side as the serial port connector.
3: The MCP212X Developer’s Daughter Board allows the MCP212X TX and RX signals to be routed to
different header connections. This may allow the system to support multiple configurations, such as being
either connected to the PICmicro® MCU USART or to the RS-232 driver (allows the MCP212X to directly
communicate via the DB-9 connector).
MCP212X Developer’s Daughter Board User’s Guide
DS51571B-page 8 © 2006 Microchip Technology Inc.
1.3 WHAT THE MCP212X DEVELOPER’S DAUGHTER BOARD KIT INCLUDES
This MCP212X Developer’s Daughter Board Kit includes:
• The MCP212X Developer’s Daughter Board (with MCP2122 installed)
• A MCP2120 sample device
• MCP212X Developer’s Daughter Board User’s Guide
(Electronic version on CD-ROM)
• PICDEM™ HPC Explorer Board firmware (on CD-ROM)
• PICDEM™ USB Board firmware (on CD-ROM)
• Analog and Interface Products Demonstration Boards CD-ROM (DS21912)
MCP212X DEVELOPER’S
DAUGHTER BOARD USER’S GUIDE
© 2006 Microchip Technology Inc. DS51571B-page 9
Chapter 2. Installation and Operation
2.1 INTRODUCTION
This chapter discusses the operation of the MCP212X Developer’s Daughter Board
and how it can be used in conjunction with some of Microchip’s low-cost PICDEM™
Demo Boards or easily connected to your system.
When the MCP212X Developer’s Daughter Board is used in conjunction with one of the
low-cost PICDEM™ Demo Boards, it demonstrates the implementation of an
embedded system with an IrDA® standard physical layer interface (encoder/decoder).
A second encoder/decoder system is required to demonstrate system operation.
The Host UART interface includes only the TX and RX signals. A discussion of the Host
UART interface is given in the following application note:
•AN946, “Interfacing the MCP2122 to the Host Controller” (DS00946)
MCP212X Developer’s Daughter Board User’s Guide
DS51571B-page 10 © 2006 Microchip Technology Inc.
2.2 FEATURES
The MCP212X Developer’s Daughter Board has the following features:
• Dual Header to connect to:
- PICDEM™ HPC Explorer Demo Board
- PICDEM™ LCD Demo Board
• Header to connect to:
- PICDEM™ Full-Speed USB Demo Board
- PICDEM™ 2 Plus Demo Board
• Header to easily connect to the user’s embedded system
• Installed optical transceiver circuit using:
-Vishay
® TFDU 4300
• Footprint for optional optical transceiver circuits using:
- Vishay TFDU 4100
- Agilent® HSDL 3000
• Jumpers to select connection point (header) for the following signals:
-TX
-RX
-16XCLK
• Jumpers to “swap” TX and RX so that the MCP2120 can directly communicate
over the PICDEM™ HPC Explorer Board’s DB-9 connector
• Jumpers which can be used by the PICDEM demo board firmware program to
determine the mode of operation
• 8-pin DIP socket for the installation of the MCP2122
• 14-pin DIP socket for the installation of the MCP2120
• MCP2120’s crystal is socketed to allow ease of crystal selection
TABLE 2-1: PICDEM™ DEMO BOARD SUPPORT
PICmicro®
MCU Demo
Board Name
Part # PICmicro®
MCU
MCU
Interface
to PC
MCP2122
RX/TX direct
access to DB9
User’s
Guide Lit. # Comment
PICDEM™ HPC
Explorer
DM183022 PIC18F8722 UART Yes DS51540 MCU firmware could support:
• MCP2122 → MCU
• MCP2122 → PC
(UART)
• MCP2122 → MCU
→ PC (UART)
PICDEM™ LCD DM163028 PIC18F8490 UART Yes DS51536 MCU firmware could support:
• MCP2122 → MCU
• MCP2122 → PC
(UART)
• MCP2122 → MCU
→ PC (UART)
DB-9 does not have
CTS signal
PICDEM™
Full-Speed USB
DM163025 PIC18F4550 USB — DS51526 MCU firmware could support:
• MCP2122 → MCU
• MCP2122 → MCU
→ PC (USB)
PICDEM™ 2
Plus
DM163022 PIC16F877/
PIC18F452
UART — DS51275 MCU firmware could support:
• MCP2122 → MCU
Installation and Operation
© 2006 Microchip Technology Inc. DS51571B-page 11
2.3 GETTING STARTED
This section presents an overview of the following system blocks:
• The MCP212X Developer’s Daughter Board Hardware
• The MCP212X Developer’s Daughter Board Firmware
2.3.1 The MCP212X Developer’s Daughter Board Hardware Overview
The major components for the MCP212X Developer’s Daughter Board are:
1. MCP2122 device (U4).
2. MCP2120 device socket (U1).
3. Optical transceiver (U5 – Vishay TFDU 4300).
4. Headers H1 and H2.
5. Header H3.
6. Header HD1.
7. Jumpers to route the TX, RX and 16XCLK signals.
8. Jumpers to select the baud rate and mode.
9. Footprint for two different optional optical transceiver circuits
(Vishay TFDU 4100 and Agilent HSDL 3000).
10. MCP2120 crystal (Y2).
The MCP212X Developer’s Daughter Board is assembled and tested to allow for the
evaluation and demonstration of the MCP2122 or MCP2120 features. A schematic of
the circuit, as well as the corresponding PCB layout, is shown in Appendix
A. “Schematic and Layouts”. Appendix B. “Bill Of Materials (BOM)” shows two
tables; the first is the components that are installed, while the second lists the optional
components that are not installed.
The component layout floor plan is shown in Figure 2-1.
MCP212X Developer’s Daughter Board User’s Guide
DS51571B-page 12 © 2006 Microchip Technology Inc.
FIGURE 2-1: MCP212X DEVELOPER’S DAUGHTER BOARD COMPONENT FLOOR PLAN
Installation and Operation
© 2006 Microchip Technology Inc. DS51571B-page 13
2.3.2 Jumper Settings
Figure 2-2 shows the component layout for the MCP212X Developer’s Daughter Board
and the operation of the JMP1/JP6, JMP2 and JMP3/JP7 jumpers. These jumpers
determine the connections between the MCP2120’s RX, TX and 16XCLK signals, as
well as the header’s RX, TX and 16XCLK signals.
FIGURE 2-2: JMP1/JP6, JMP2 AND JMP3/JP7 CONFIGURATIONS
16XCLK Source JMP1/JP6 (RX)
RX to H1-RC7 (RXD)
16XCLK is from the
16XCLK is from the
J3-RC2 pin or J3-16X
TX to H1-RC6 (TXD)
RX to H1-RC6 (TXD) TX to H1-RC7 (RXD)
RX to H2-RG2 (RX2), TX to H2-RG1 (TX2),
RX to H3-RC7 (RXD), and
RX to H3-RX
TX to H3-RC6 (TXD), and
TX to H3-TX
(DB-9 to PC) (DB-9 to PC)
Selections
J1-RC2 pin
JMP3/JP7 (TX)
Selections
MCP212X Developer’s Daughter Board User’s Guide
DS51571B-page 14 © 2006 Microchip Technology Inc.
Figure 2-3 shows the component layout for the MCP212X Developer’s Daughter Board
and the operation of the JP1, JP2, JP3 and JP4 jumpers. When the jumper is open, the
signal is pulled high. When the jumper is shorted, the signal is pulled to ground. JP1 is
connected to the header’s RA0 signal, JP2 is connected to the header’s RA1 signal,
JP3 is connected to the header’s RC0 signal and JP4 is connected to the header’s RC1
signal. These signals are also connected to the MCP2120’s BAUD and MODE pins.
FIGURE 2-3: JP1, JP2, JP3 AND JP4 CONFIGURATIONS
Baud Rate Selection
9600 Baud
JP1 JP2 JP3
19200 Baud
38400 Baud
57600 Baud
115200 Baud
Not Defined
All Other
Settings
Mode Selection (1)
MCP212X communicates with
DB-9 (PC)
MCP212X communicates with
PIC18F8722
Note 1: This is the firmware operation for
00063 HPC.asm when used w/
the PICDEM™ HPC Explorer
Demo Board.
Installation and Operation
© 2006 Microchip Technology Inc. DS51571B-page 15
A description of the MCP212X Developer’s Daughter Board jumpers is given in
Tab l e 2 - 2.
TABLE 2-2: JUMPER DESCRIPTIONS AND SETTINGS
Jumper # Description Comment
JP1A:JP2A To connect TXIR/RXIR of MCP2122 to TXD/RXD of
U5 (HSDL 3000)
S = TXIR/RXIR connected to TXD/RXD
O = TXIR/RXIR Not connected to TXD/RXD
By default not installed.
JP1B:JP2B To connect TXIR/RXIR of MCP2122 to TXD/RXD of
U5 (TFDU 4100)
S = TXIR/RXIR connected to TXD/RXD
O = TXIR/RXIR Not connected to TXD/RXD
By default not installed.
JP1C:JP2C To connect TXIR/RXIR of MCP2122 to TXD/RXD of
U5 (TFDU 4300)
S = TXIR/RXIR connected to TXD/RXD
O = TXIR/RXIR Not connected to TXD/RXD
By default not installed. PCB traces
short these jumpers (bottom of PCB)
JP1 Hardware control of Header RA0 signal and MCP2120
BAUD0 signal
S = Signal Connected to VSS
O = Signal Connected to VDD
JP2 Hardware control of Header RA1 signal and MCP2120
BAUD1 signal
S = Signal Connected to VSS
O = Signal Connected to VDD
JP3 Hardware control of Header RC0 signal and MCP2120
BAUD2 signal
S = Signal Connected to VSS
O = Signal Connected to VDD
JP4 Hardware control of Header RC1 signal and MCP2120
MODE signal
S = Signal Connected to VSS
O = Signal Connected to VDD
JP5 Hardware control of Header RA3 signal and MCP2120 EN
signal
S = Signal Connected to VSS
O = Signal Connected to VDD
JMP1 Connects MCP2120 RX signal to either Header 1’s RX
signal or Header 2/Header 3 RX signals
Note 1
JP6 Connects MCP2120 RX signal to Header 1’s TX signal Used when the MCP2120
communicates directly from the DB-9
connector. (Note 1)
JMP2 Connects MCP2120 16XCLK signal to either Header 1’s
16XCLK signal or to Header 2/Header 3’s 16XCLK signals
JMP3 Connects MCP2120 TX signal to Header 1’s TX
signal or Header 2/Header 3 TX signals
Note 2
JP7 Connects MCP2120 TX signal to Header 1’s RX
signal
Used when the MCP2120
communicates directly from the DB-9
connector. (Note 2)
Legend: S = Jumper is shorted (Closed) O = Jumper is Open
Note 1: The MCP2120’s RX signal is either connected via JMP1 or JP6 (but not both at the same time).
2: The MCP2120’s TX signal is either connected via JMP3 or JP7 (but not both at the same time).
MCP212X Developer’s Daughter Board User’s Guide
DS51571B-page 16 © 2006 Microchip Technology Inc.
2.4 MAKING A DEMO SYSTEM
The MCP212X Developer’s Daughter Board requires a clock source and either a Host
Controller or a UART circuit. To demonstrate the board, the easiest method is to use
one of the compatible PICDEM™ Demo Boards. A good choice is the PICDEM™ HPC
Explorer Demo Board. This allows the MCP2120 device to interface to either:
• PIC18F8722’s EUSART1
• PIC18F8722’s EUSART2
• PICDEM™ HPC Explorer Demo Board’s DB-9 connector (MAX3232C)
Additional instructions for performing a demo using the PICDEM™ HPC Explorer
Demo Board are shown in Appendix D. “Using the MCP212X Developer’s Daughter
Board with the PICDEM™ HPC Explorer Demo Board”. Appendix E. “Using the
MCP212X Developer’s Daughter Board with the PICDEM™ FS USB Demo Board”
supplies instructions for performing a demo using the PICDEM™ FS USB Demo
Board. Appendix F. “Configuring the HyperTerminal® Program” may be useful for
configuring the HyperTerminal program on the PC.
System Requirements
Table 2-3 shows the requirements for a system that can be used to demonstrate the
MCP212X Developer’s Daughter Board.
System Setup
The system setup requires a PC with two serial communication ports (UARTs) and
HyperTerminal, the system application program. Two PICDEM™ HPC Explorer Demo
Boards and two MCP212X Daughter Boards are then needed.
Figure 2-4 shows a system block diagram.
TABLE 2-3: SYSTEM HARDWARE REQUIREMENTS
Note: The MCP2122 may be installed in U4, or the MCP2120 may be installed in
U1. However, these devices should not be installed at the same time.
Qty Hardware Purpose
1 PC with 2 serial ports The PC will “talk” to each PICDEM™ HPC Explorer Demo Board
(Encoder/Decoder board) via the serial port and an instance of the
HyperTerminal® program. For consistency, COM 1 will be used to talk to the
“System #1” PICDEM™ HPC Explorer Demo Board. Com 2 will be used to
communicate to the “System #2” PICDEM™ HPC Explorer Demo Board.
2 Serial Cables To connect the PC serial ports to each PICDEM™ HPC Explorer Demo
Board’s serial port.
2 PICDEM™ HPC Explorer Boards The MCP212X Developer’s Daughter Board will be installed into this board
for testing.
2 MCP2120 Daughter Boards This board will be used to communicate with the system under test.
2 2 PICDEM™ HPC Explorer Demo
Board Power Supplies (9V DC)
Used to power each of the PICDEM™ HPC Explorer Demo Boards.
Installation and Operation
© 2006 Microchip Technology Inc. DS51571B-page 17
FIGURE 2-4: SYSTEM BLOCK DIAGRAM
2.4.1 The PICDEM™ Demo Board Firmware Overview
Two firmware programs are supplied with this board. 00063 - HPC.asm is for the
PICDEM™ HPC Explorer Demo Board, while 00063 - FS USB.asm is for the
PICDEM™ FS USB Demo Board.
The PICDEM™ HPC Explorer Demo Board supports two modes of operation:
the Direct-to-PC and Echo modes.
In Direct-to-PC mode, the data byte communicates between the MCP2120 and the
PICDEM™ HPC Explorer Demo Board’s DB-9 connector (does not communicate with
the PIC18F8722). The PIC18F8722 is only used for the 16XCLK signal (for the
specified baud rate).
In Echo mode, the data byte that is received is “echoed” in the opposite case
(lowercase → uppercase and uppercase → lowercase).
The PICDEM™ FS USB Demo Board only supports Echo mode.
The source code for these programs are available for download from the Microchip web
site (www.microchip.com), as well as being available on the CD-ROM supplied with the
MCP212X Developer’s Daughter Board.
To use these programs, it is required that the MPLAB® IDE be installed on a computer
and that one of Microchip’s development tools are available to program the board (such
as MPLAB® ICD 2).
HyperTerminal®
Program Window A
(Com 1)
(Com 2) (1) Com 1 Com 2 (1)
System #1 System #2
PICDEM™ HPC
Explorer Demo Board plus
MCP212X Daughter Boards
PICDEM™ HPC
Explorer Demo Board plus
MCP212X Daughter Boards
Note 1: Only required if data is
communicated with the PC.
Some program modes “respond” to
received data (data not sent to PC).
HyperTerminal
Program Window B
MCP212X Developer’s Daughter Board User’s Guide
DS51571B-page 18 © 2006 Microchip Technology Inc.
2.5 MCP212X DEVELOPER’S DAUGHTER BOARD DESCRIPTION
The following sections describe each element of this daughter board in further detail.
2.5.1 Power
The MCP212X Developer’s Daughter Board is powered by a 5V supply. This voltage
supply may be sourced via the PCB headers.
When the device is used in conjunction with the appropriate PICDEM™ Demo Board,
the power is supplied via the connector interface. If the MCP212X Developer’s
Daughter Board is jumpered into an application circuit via the HD1 connector, the
device power supply must be brought over as well.
2.5.2 MCP212X IrDA® Standard Encoder/Decoder Device
This demo board highlights the MCP2122 device (U4) and MCP2120 device (U1) to
demonstrate the implementation of an IR port in an embedded system application. The
MCP2120 device handles the encoding/decoding of the UART/IR bit stream.
Further Host Controller interface information is available in the device documentation:
• MCP2122 Data Sheet, “Infrared Encoder/Decoder” (DS21894)
• MCP2120 Data Sheet, “Infrared Encoder/Decoder” (DS21618)
• AN946, “Interfacing the MCP2122 to the Host Controller” (DS00946)
2.5.2.1 MCP2122 OPERATION
The MCP2122 (U4) implements an IrDA standard encoder/decoder. The baud rate is
determined by the frequency of the 16XCLK input.
The key signals for the MCP2122-to-microcontroller (Host UART) interface are shown
in Table 2-4. The key signals for the MCP2122-to-IR transceiver circuit are shown in
Tab l e 2- 5 .
TABLE 2-4: MCP2122 HOST UART INTERFACE PINS
TABLE 2-5: MCP2122 IR INTERFACE PINS
In addition to the signals described in Table 2-4 and Table 2-5, the MCP2120 RESET
input is connected to the RESET output of the Host Controller.
Pin
Name
Pin
Number
(PDIP)
Pin
Type
Buffer
Type Description
TX 2 I TTL Asynchronous receive; from Host Controller UART
RX 3 O — Asynchronous transmit; to Host Controller UART
16XCLK 1 I TTL 16 x Clock
Legend: TTL = TTL compatible input ST = Schmitt Trigger input with CMOS levels
I = Input O = Output
Pin Name
Pin
Number
(PDIP)
Pin
Type
Buffer
Type Description
TXIR 2 O — Asynchronous transmit to IrDA® standard
transceiver
RXIR 3 I ST Asynchronous receive from infrared transceiver
Legend: A = Analog P = Power
I = Input O = Output
Installation and Operation
© 2006 Microchip Technology Inc. DS51571B-page 19
2.5.2.2 MCP2120 OPERATION
The MCP2120 (U1) implements an IrDA standard encoder/decoder. The baud rate is
determined by the device frequency and the state of the BAUD2:BAUD0 pins. The
MCP2120 also has a Software Baud Rate mode which controls the baud rate via the
Host Controller software.
The key signals for the MCP2120-to-microcontroller (Host UART) interface are shown
in Table 2-6. The key signals for the MCP2120-to-IR transceiver circuit are shown in
Tab l e 2- 7 .
TABLE 2-6: MCP2120 HOST UART INTERFACE PINS
TABLE 2-7: MCP2120 IR INTERFACE PINS
In addition to the signals described in Table 2-6 and Table 2-7, the MCP2120 RESET
input is connected to the RESET output of the Host Controller. The EN input can be
either hard-wired or controlled by the Host Controller.
Pin
Name
Pin
Number
(PDIP)
Pin
Type
Buffer
Type Description
TX 12 I TTL Asynchronous receive; from Host Controller UART
RX 11 O — Asynchronous transmit; to Host Controller UART
BAUD0 10 I TTL BAUD2:BAUD0 specifies the Baud rate of the
device, or if the device operates in Software Baud
Rate mode
BAUD1 9 I TTL
BAUD3 8 I TTL
MODE 7 I TTL Selects the device mode (Data/Command) for
Software Baud Rate operation
Legend: TTL = TTL compatible input ST = Schmitt Trigger input with CMOS levels
I = Input O = Output
Pin Name
Pin
Number
(PDIP)
Pin
Type
Buffer
Type Description
TXIR 6 O — Asynchronous transmit to IrDA® standard
transceiver
RXIR 5 I ST Asynchronous receive from an infrared transceiver
Legend: A = Analog P = Power
I = Input O = Output
MCP212X Developer’s Daughter Board User’s Guide
DS51571B-page 20 © 2006 Microchip Technology Inc.
2.5.3 IR Transceiver Circuit
The IR transceiver circuit uses a Vishay® TFDU 4300 integrated optical transceiver.
Footprints for an optional optical transceiver are implemented. These footprints are for
the Vishay TFDU 4100 and the Agilent® HSDL-3000. Jumpers are used to allow all
three implementations to be installed, but with only one connected to the MCP2120
TXIR and RXIR pins.
2.5.4 Signal Header
To allow easy access to many of the system signals, a header (HD1) was placed on
one of the edges of the board. This allows the signals from the MCP2120 to be easily
accessed and connected into an existing application for initial development or
proof-of-concept.
FIGURE 2-5: 14-PIN SIGNAL INTERFACE HEADER HD1
VSS
VDD
RA1
RESET
RX
TX
16XCLK
NC
TXIR
RXIR
HD1
RA0
RA3
RC1
RC0
MCP212X DEVELOPER’S
DAUGHTER BOARD USER’S GUIDE
© 2006 Microchip Technology Inc. DS51571B-page 21
Appendix A. Schematic and Layouts
A.1 INTRODUCTION
This appendix contains the following schematics and layouts for the MCP212X
Developer’s Daughter Board:
• Board Schematic – Headers and Jumpers
• Board Schematic – Circuitry
• Board – Component Layer
• Board – Top Layer
• Board – Bottom Layer
A.2 SCHEMATICS AND PCB LAYOUT
The layer order is shown in Figure A-1.
FIGURE A-1: LAYER ORDER
Top Layer
Bottom Layer
MCP212X Developer’s Daughter Board User’s Guide
DS51571B-page 22 © 2006 Microchip Technology Inc.
A.3 BOARD SCHEMATIC – PAGE 1
M
PICDEM™ 2+
PICtail™
Daughter Board
PICtail™ Daughter Board
Schematic and Layouts
© 2006 Microchip Technology Inc. DS51571B-page 23
A.4 BOARD SCHEMATIC – PAGE 2
M
6TXIR
3OSC2
9
BAUD1
12
TX
7MODE
1VDD
4RE S E T
5RXIR
8
BAUD2
10
BAUD0
11
RX
14
VSS
13
EN
2OSC1/CLKI
MCP212X Developer’s Daughter Board User’s Guide
DS51571B-page 24 © 2006 Microchip Technology Inc.
A.5 BOARD LAYOUT – COMPONENT LAYER
Schematic and Layouts
© 2006 Microchip Technology Inc. DS51571B-page 25
A.6 BOARD LAYOUT – TOP LAYER
MCP212X Developer’s Daughter Board User’s Guide
DS51571B-page 26 © 2006 Microchip Technology Inc.
A.7 BOARD LAYOUT – BOTTOM LAYER
MCP212X DEVELOPER’S
DAUGHTER BOARD USER’S GUIDE
© 2006 Microchip Technology Inc. DS51571B-page 27
Appendix B. Bill Of Materials (BOM)
The MCP212X Developer’s Daughter Board allows the MCP2120 or MCP2122 device
to be evaluated. The board also allows the customer to evaluate the operation of one
of three optical tranceiver devices.
Table B-1 shows the components that are installed in the MCP212X Developer’s
Daughter Board PCB, while Table B-2 shows the components that are NOT installed
on the MCP212X Developer’s Daughter Board PCB.
TABLE B-1: BOM – COMPONENTS INSTALLED
Qty Reference Description Manufacturer Part Number
4 C1, C2, C11, C13 0.1 µF (SMT) Panasonic® - ECG ECJ-2VB1C104K
2 C3, C4 18 pF (SMT) Yageo America 0805CG180J9B200
2 C10, C12 4.7 µF/16V (SMT) Panasonic - ECG ECS-T1AY475R
1 H1, H3 2x14 Male connector Header Jameco Valuepro 2012-254-2X14SG
1 H2 2x10 Male connector Header Jameco Valuepro 7000-2X10SG
1 HD1 1x14 Male connector Header Jameco Valuepro 7000-1x14SG
3 JMP1, JMP2, JMP3 1x3 Jumper Stakes (Male) Jameco Valuepro 7000-1x3SG
7 JP1, JP2, JP3, JP4,
JP5, JP6, JP7
1x2 Jumper Stakes (Male) Jameco Valuepro 7000-1x2SG
2 R1, R3 10 kΩ (SMT) Panasonic - ECG ERJ-6ENF1002V
4 R5, R6, R7, R18 100 kΩ (SMT) Panasonic - ECG ERJ-6ENF1003V
1 R12 47Ω (SMT) Panasonic - ECG ERJ-6ENF47R5V
1 U1 14-pin DIP Socket Microchip
Technology Inc.
1 U4 8-pin DIP Socket Jameco Valuepro 6100-14
1 MCP2122 (provided) Jameco Valuepro 6100-8
1 U5 TFDU-4300 Microchip
Technology Inc.
2 Y1 Crystal Sockets pin Manufacturing Corp 0667-0-15-01-30-27-10-0
1 7.3728 MHz Crystal (Through hole) CTS Frequency
Controls
MP073
1 — PCB 105-00063 (R2 or greater) Microchip
Technology Inc.
8 — Jumper Shunt (used on JP1, JP2,
JP3, JP4, JP5, JP6, JP7 and JMP2)
Jameco Valuepro 2012JH
Note 1: The components listed in this Bill of Materials are representative of the PCB assembly. The released BOM
used in manufacturing uses all RoHS-compliant components.
MCP212X Developer’s Daughter Board User’s Guide
DS51571B-page 28 © 2006 Microchip Technology Inc.
TABLE B-2: BOM – OPTIONAL COMPONENTS, NOT INSTALLED
Qty Reference Description Manufacturer Part Number
0 C6 0.47 µF (SMT)
0 C7 6.8 µF Tantalium (SMT)
0 C8 4.7 µF/16V (SMT)
0 C9 0.1 µF (SMT) Panasonic - ECG ECJ-2VB1C104K
0 JP1A, JP1B, JP1C,
JP2A, JP2B, JP2C
1x2 Jumper Stakes (Male) Jameco Valuepro 7000-1x2SG
0R8 6.8Ω (SMT)
0R9 14Ω (SMT)
0 R10 47Ω (SMT)
0R11 0Ω (SMT)
1 U1 MCP2120 (In the Sample Pack) Microchip
Technology Inc.
MCP2120-I/P
0 U2 HSDL-3000 Agilent®HSDL-3000
0 U3 TFDU-4100 Vishay®TFDU-4100
0 — Jumper Shunt (used on JP1A and
JP2A, or JP1B and JP2B, or
JP1C and JP2C)
Jameco Valuepro 2012JH
MCP212X DEVELOPER’S
DAUGHTER BOARD USER’S GUIDE
© 2006 Microchip Technology Inc. DS51571B-page 29
Appendix C. Board Testing
The MCP212X Developer’s Daughter Board can be used in multiple configurations.
Only a subset of these configurations will be tested. The tests were performed at 9600
baud. Other baud rates were not tested.
TABLE C-1: MCP212X DEVELOPER’S DAUGHTER BOARD TESTED CONFIGURATIONS
C.1 WHAT IS TESTED
The following portions of the board are tested:
• MCP2122
• TFDU-4300 and circuitry
• Header 1 – TXD and RXD signals
• Header 1 – 16XCLK signal
• Header 2 – TX2 and RX2 signals
•JP4
•JP6
•JP7
C.2 WHAT IS NOT TESTED
The following portions of the board are NOT tested:
• MCP2120 and crystal circuitry
• TFDU-4100 and circuitry
• HSDL-3000 and circuitry
• Header 3
• JP1, JP2, JP3 and JP5
• JMP2 (P1 – P2)
• JMP1 (P1 – P2)
• JMP3 (P1 – P2)
• Header HD1
JP3:JP2:JP1 JP4 JP5 JMP2
(16XCLK)
JMP1/JP6
(MCP212x RX
Destination)
JMP3/JP7
(MCP212x TX
Destination)
Comment
S:S:S O S 2-3 2-3 (JMP1) 2-3 (JMP3) 9600 baud, MCP2122 to PIC18F8772
UART2 on Header 2 (Echo mode)
S:S:S S S 2-3 S (JP6) S (JP7) 9600 baud, MCP2122 to DB9 (PC) on
Header 1
Legend: O = Jumper is “Open” S = Jumper is “Shorted”
1-2 = Pin 1 is shorted to Pin 2 (of 3 pin header)
2-3 = Pin 2 is shorted to Pin 3 (of 3 pin header)
MCP212X Developer’s Daughter Board User’s Guide
DS51571B-page 30 © 2006 Microchip Technology Inc.
NOTES:
MCP212X DEVELOPER’S
DAUGHTER BOARD USER’S GUIDE
© 2006 Microchip Technology Inc. DS51571B-page 31
Appendix D. Using the MCP212X Developer’s Daughter
Board with the PICDEM™ HPC Explorer Demo Board
D.1 DEMONSTRATION USING TWO PICDEM™ HPC EXPLORER DEMO BOARDS
To perform a demonstration of the MCP212X Developer’s Daughter Board, two
systems are needed. Each system is a MCP212X Developer’s Daughter Board
(MCP212XEV-DB) plus the PICDEM™ HPC Explorer Demo Board (DM183022).
Figure D-1 shows a block diagram of the demonstation system.
FIGURE D-1: SYSTEM BLOCK DIAGRAM
The firmware for these demos is available on the Microchip web site, as well as on the
AIPD Evaluation Board CD-ROM. The filename is 00063 - HPC.asm. This code must
be programmed into the PICDEM™ HPC Explorer Demo Board’s PIC18F8722 for
demo operation. This code supports two demos. The demo executed is dependent on
the state of the JP4 jumper.
HyperTerminal®
Program Window A
(Com 1)
HyperTerminal
Program Window B
(Com 2) Com 1 Com 2
System #1 System #2
PICDEM™ HPC
Explorer Demo Board plus
MCP212X Developer’s
PICDEM™ HPC
Explorer Demo Board plus
MCP212X Developer’s
Daughter Boards Daughter Boards
Note: Other PICDEM™ Demo Boards may be used, but appropriate firmware
needs to be installed to demonstrate the system.
MCP212X Developer’s Daughter Board User’s Guide
DS51571B-page 32 © 2006 Microchip Technology Inc.
The crystal frequency of the PICDEM™ Demo Board determines the error rates for the
EUSART baud rates, as well as the 16XCLK generation (for the MCP2122). So for the
PICDEM™ HPC Explorer Demo Board, the default crystal is 10 MHz (does have a 4x
PLL). Therefore, the 16XCLK frequency for 115200 baud has an error outside usable
limits for IrDA® standard communication for both 10 MHz and 40 MHz operation (see
Table D-1). The demo will be limited to 9600 baud. Table D-2 shows the SPBRG values
for the EUSART at the same crystal frequencies.
TABLE D-1: PR VALUES FOR PWM(1)
TABLE D-2: SPBRG VALUES FOR EUSART(1)
Desired
Baud Rate 16XCLK
@ 40 MHz(2) @ 20 MHz(2) @ 14.759 MHz(2) @ 10 MHz(2)
PR(3) %Error PR(3) %Error PR(3) %Error PR(3) %Error
9600 153,600 64 -0.16% 32 1.36% 23 0% 15 -1.73%
19200 307,200 32 1.36% 15 -1.73% 11 0% 7 -1.73%
38400 614,400 15 -1.73% 7 -1.73% 5 0% 3 -1.73%
57600 921,600 10 1.36% 4 -8.51% 3 0% 2 9.58%
115200 1,843,200 4 -8.51% 2 -35.6% 1 0% 1 32.18%
Note 1: Shaded values indicate a % error that is larger than should be used.
2: The following shows the PICDEM™ Demo Board device frequencies:
PICDEM™ HPC Explorer Demo Board has a 10 MHz crystal installed (4xPLL -> 40 MHz).
PICDEM™ FS USB Demo Board has a 20 MHz crystal installed.
PICDEM™ 2 Plus Demo Board has a 4 MHz crystal installed.
PICDEM™ LCD has a socket for an external canned oscillator (also has an internal 8 MHz RC).
3: CCP Duty Cycle should be approximately 50% of the PR value.
Desired
Baud Rate
@ 40 MHz(2) @ 20 MHz(2) @ 14.759 MHz(2) @ 10 MHz(2)
SPBRG(3) %Error SPBRG(3) %Error SPBRG(3) %Error SPBRG(3) %Error
9600 225 -1.73% 129 -0.16% 95 0% 64 -0.16%
19200 129 -0.16% 64 -0.16% 47 0% 32 1.36%
38400 64 -0.16% 32 1.36% 23 0% 15 -1.73%
57600 42 -0.94% 21 1.36% 15 0% 10 1.36%
115200 21 1.36% 10 1.36% 7 0% 4 -8.51%
Note 1: Shaded values indicate a % error that is larger than should be used.
2: The following shows the PICDEM™ Demo Board device frequencies:
PICDEM™ HPC Explorer Demo Board has a 10 MHz crystal installed (4xPLL -> 40 MHz).
PICDEM™ FS USB Demo Board has a 20 MHz crystal installed.
PICDEM™ 2 Plus Demo Board has a 4 MHz crystal installed.
PICDEM™ LCD has a socket for an external canned oscillator (also has an internal 8 MHz RC).
3: SYNC = 0, BRGH = 1, BRG16 = 0.
Using the MCP212X Developer’s Daughter Board
with the PICDEM™ HPC Explorer Demo Board
© 2006 Microchip Technology Inc. DS51571B-page 33
D.1.1 Demo #1 Operation
In Demo #1, the MCP212X Developer’s Daughter Board will communicate directly to
the PICDEM™ HPC Explorer Demo Board’s DB-9 connector (and then to the PC). The
PICDEM™ HPC Explorer Demo Board is used to determine the communication baud
rate (9600) via the JP3, JP2 and JP1 jumper states. Given this state, the PICmicro®
MCU can then supply the 16XCLK frequency to the MCP2122. Power is supplied over
the J1 and J2 interface headers. Jumper JP4 is used to select which demonstration
program to run. Figure D-2 shows the jumper configuration for Demo #1.
FIGURE D-2: DEMO #1 CONFIGURATION
MCP212X Developer’s Daughter Board User’s Guide
DS51571B-page 34 © 2006 Microchip Technology Inc.
Table D-3 shows the steps for Demo #1 operation.
TABLE D-3: DEMO #1 STEPS
Step Action Result
1 Place both devices on a flat surface about 25 cm (10”)
apart, with the IR ports facing each other.
—
2On the System #1 Unit:
The jumpers must be configured as in Figure D-3.
—
3On the System #1 Unit:
Apply power to the unit via the 9V power supply.
On the System #1 Unit:
The green power LED (D) will turn on.
4On the System #1 Unit:
Connect the PC serial port cable that is connected to
COM1.
—
5On the System #2 Unit:
Insert the MCP212X Developer’s Daughter Board into
the PICDEM™ HPC Explorer Demo Board.
Ensure that the jumpers are configured as in
Figure D-2.
Test unit will echo the received Alpha character
(changing the case; upper to lower and lower to
upper).
6On the System #2 Unit:
Apply power to the unit via the 9V power supply.
On the System #2 Unit:
The green power LED (D) will turn on.
7On the System #2 Unit:
Connect the PC serial port cable that is connected to
COM2.
—
8On the System #1 Unit:
Depress and release Switch 2 (S2 – MCLR).
—
9On the System #2 Unit:
Depress and release Switch 2 (S2 – MCLR).
—
10 On the PC:
Open the HyperTerminal® program window for
COM 1.
Ensure that the window indicates that the
HyperTerminal program is connected.
—
11 On the PC:
In the HyperTerminal program COM1 window, type
alpha-numeric characters (such as “123456 asdfg”).
On the PC:
In the HyperTerminal program COM 2 window, the
same characters should be displayed (“123456
asdfg”).
12 On the PC:
In the HyperTerminal program COM2 window, depress
the Return key and type alpha-numeric characters
(such as “7890 hjkl;”).
On the PC:
In the HyperTerminal program COM 1 window, the
same characters should be displayed (“7890 hjkl;”) on
the line below the “123456 asdfg” characters.
13 On the System #2 Unit:
Power-down the board and remove the tested
MCP212x Daughter Board.
—
14 Go to Step #5 —
Using the MCP212X Developer’s Daughter Board
with the PICDEM™ HPC Explorer Demo Board
© 2006 Microchip Technology Inc. DS51571B-page 35
D.1.2 Demo #2 Operation
In Demo #2, the System 2 unit will echo any alpha character received, changing the
case of the character (lowercase to uppercase/uppercase to lowercase). The System
1 unit is connected to the PC, while the System 2 unit is not connected, though it still
needs to be powered. The PICDEM™ HPC Explorer Demo Board is used to determine
the communication baud rate (9600) via the JP3, JP2 and JP1 jumper states. Given
this state, the PICmicro® MCU can then supply the 16XCLK frequency to the
MCP2122. Power is supplied over the J1 and J2 interface headers. Jumper JP4 is used
to select which demo program to run. Figure D-3 shows the jumper configuration for
Demo #2.
Table D-3 shows the steps for Demo #2.
FIGURE D-3: DEMO #2 CONFIGURATION
MCP212X Developer’s Daughter Board User’s Guide
DS51571B-page 36 © 2006 Microchip Technology Inc.
TABLE D-4: DEMO #2 STEPS
Step Action Result
1 Place both devices on a flat surface about 25 cm (10”)
apart, and with the IR ports facing each other.
—
2On the System #1 Unit:
The jumpers must be configured as in Figure D-3.
—
3On the System #1 Unit:
Apply power to the unit via the 9V power supply.
On the System #1 Unit:
The green power LED (D) will turn on.
4On the System #1 Unit:
Connect the PC serial port cable that is connected to
COM1.
—
5On the System #2 Unit:
Insert the MCP212X Developer’s Daughter Board into
the PICDEM™ HPC Explorer Demo Board.
Ensure that the jumpers are configured as in
Figure D-2.
Test unit will echo the received Alpha character
(changing the case; uppercase to lowercase and
lowercase to uppercase)
6On the System #2 Unit:
Apply power to the unit via the 9V power supply.
On the System #2 Unit:
The green power LED (D) will turn on.
7On the System #1 Unit:
Depress and release Switch 2 (S2 – MCLR).
—
8On the System #2 Unit:
Depress and release Switch 2 (S2 – MCLR).
—
9On the PC:
Open the HyperTerminal® program window for
COM 1.
Ensure that the window indicates that the
HyperTerminal program is connected
—
10 On the PC:
In the HyperTerminal program window, type an “a”.
On the PC:
The HyperTerminal window will display an “aA”.
11 On the PC:
Type some additional alpha characters into the
HyperTerminal program window.
On the PC:
The typed alpha character will echo where the case
has changed; lowercase -> uppercase and
uppercase -> lowercase.
12 On the System #2 Unit:
Power down the board and remove the tested
MCP212X Developer’s Daughter Board.
—
13 Go to Step #5 —
MCP212X DEVELOPER’S
DAUGHTER BOARD USER’S GUIDE
© 2006 Microchip Technology Inc. DS51571B-page 37
Appendix E. Using the MCP212X Developer’s Daughter
Board with the PICDEM™ FS USB Demo Board
E.1 DEMONSTRATION WITH THE PICDEM FS USB DEMO BOARD
To perform a demonstration of the MCP212X, two systems are needed. One system
will operate as an encoder/decoder passing information to the PC. This system may be
either the:
• MCP212X Developer’s Daughter Board (MCP212XEV-DB) plus the PICDEM™
HPC Explorer Demo Board (DM183022) or
• MCP2120 Developer’s Board (DM163008)
The second system is a MCP212X Developer’s Daughter Board (MCP212XEV-DB)
plus the PICDEM™ FS USB Demo Board (DM163025). This system operates in a
stand-alone mode and will “echo” the characters it receives (changing the case of the
received alpha character). Figure E-1 shows a block diagram of the demonstration
system.
FIGURE E-1: SYSTEM BLOCK DIAGRAM
The firmware for these demos is available on the Microchip web site, as well as on the
AIPD Evaluation Board CD-ROM. The file name is 00063 - FS USB.asm. This code
must be programmed into the PICDEM™ FS USB Demo Board’s PIC18F4550 for
demo operation. This code requires the JP4 jumper to be in the documented state.
HyperTerminal®
Program Window A
(Com 1)
Com 1
System #1 System #2
PICDEM™ FS USB
Demo Board +
MCP212X Developer’s
PICDEM™ HPC Explorer
Demo Board +
MCP212X Developer’s
Daughter Boards Daughter Boards
Note: Other PICDEM™ Demo Boards may be used, but appropriate firmware
needs to be installed to demonstrate the system.
MCP212X Developer’s Daughter Board User’s Guide
DS51571B-page 38 © 2006 Microchip Technology Inc.
The crystal frequency of the PICDEM™ Demo Board determines the error rates for the
EUSART baud rates, as well as the 16XCLK generation (for the MCP2122). So, for the
PICDEM™ FS USB Demo Board, the default crystal is 20 MHz. The 16XCLK
frequency for 115200 and 57600 baud has an error outside usable limits for IrDA®
standard communication for 20 MHz operation (see Table E-1). Therefore, the demo
will be limited to 9600 baud. Table E-2 shows the SPBRG values for the EUSART at
the same crystal frequencies.
TABLE E-1: PR VALUES FOR PWM(1)
TABLE E-2: SPBRG VALUES FOR EUSART(1)
Desired
Baud Rate 16XCLK
@ 40 MHz(2) @ 20 MHz(2) @ 14.759 MHz(2) @ 10 MHz(2)
PR(3) %Error PR(3) %Error PR(3) %Error PR(3) %Error
9600 153,600 64 -0.16% 32 1.36% 23 0% 15 -1.73%
19200 307,200 32 1.36% 15 -1.73% 11 0% 7 -1.73%
38400 614,400 15 -1.73% 7 -1.73% 5 0% 3 -1.73%
57600 921,600 10 1.36% 4 -8.51% 3 0% 2 9.58%
115200 1,843,200 4 -8.51% 2 -35.6% 1 0% 1 32.18%
Note 1: Shaded values indicate a % error that is larger then should be used.
2: The following shows the PICDEM™ Demo Board device frequencies:
PICDEM™ HPC Explorer Demo Board has a 10 MHz crystal installed (4xPLL -> 40 MHz),
PICDEM™ FS USB Demo Board has a 20 MHz crystal installed,
PICDEM™ 2 Plus Demo Board has a 4 MHz crystal installed,
PICDEM™ LCD has a socket for an external canned oscillator (also has an internal 8 MHz RC).
3: CCP duty cycle should be approximately 50% of the PR value.
Desired
Baud Rate
@ 40 MHz(2) @ 20 MHz(2) @ 14.759 MHz(2) @ 10 MHz(2)
SPBRG(3) %Error SPBRG(3) %Error SPBRG(3) %Error SPBRG(3) %Error
9600 225 -1.73% 129 -0.16% 95 0% 64 -0.16%
19200 129 -0.16% 64 -0.16% 47 0% 32 1.36%
38400 64 -0.16% 32 1.36% 23 0% 15 -1.73%
57600 42 -0.94% 21 1.36% 15 0% 10 1.36%
115200 21 1.36% 10 1.36% 7 0% 4 -8.51%
Note 1: Shaded values indicate a % error that is larger then should be used.
2: The following shows the PICDEM™ Demo Board device frequencies:
PICDEM™ HPC Explorer Demo Board has a 10 MHz crystal installed (4xPLL -> 40 MHz),
PICDEM™ FS USB Demo Board has a 20 MHz crystal installed,
PICDEM™ 2 Plus Demo Board has a 4 MHz crystal installed,
PICDEM™ LCD has a socket for an external canned oscillator (also has an internal 8 MHz RC).
3: SYNC = 0, BRGH = 1, BRG16 = 0.
Using the MCP212X Developer’s Daughter Board
with the PICDEM™ FS USB Demo Board
© 2006 Microchip Technology Inc. DS51571B-page 39
E.1.1 Demo #1 Operation
In Demo #1, the System 2 unit will echo any alpha character received, changing the
case of the character (lowercase to uppercase/uppercase to lowercase). The System
1 unit is connected to the PC, while the System 2 unit is not connected, though it still
needs to be powered. The PICDEM™ FS USB Demo Board is used to determine the
communication baud rate (9600) via the JP3, JP2 and JP1 jumper states. Given this
state, the PICmicro® MCU can then supply the 16XCLK frequency to the MCP2122.
Power is supplied over the J3 interface header. Jumper JP4 is used to select which
demo program to run. Figure E-2 shows the jumper configuration for Demo #1.
Table E-3 shows the steps for Demo #1.
FIGURE E-2: DEMO #1 CONFIGURATION
TABLE E-3: DEMO #1 TEST STEPS
Step Action Result
1 Place both devices on a flat surface about 25 cm (10”)
apart, with the IR ports facing each other.
—
MCP212X Developer’s Daughter Board User’s Guide
DS51571B-page 40 © 2006 Microchip Technology Inc.
2On the System #1 Unit:
The jumpers must be configured as in Figure E-2.
—
3On the System #1 Unit:
Apply power to the unit via the 9V power supply.
On the System #1 Unit:
The green power LED (D) will turn on.
4On the System #1 Unit:
Connect the PC serial port cable that is connected to
COM1.
—
5On the System #2:
Insert the MCP212X Developer’s Daughter Board into
the PICDEM™ HPC Explorer Demo Board.
Ensure that the jumpers are configured as shown in
Figure E-2.
System #2 will echo the received alpha character
(changing the case; uppercase to lowercase and
lowercase to uppercase).
6On the System #2:
Apply power to the unit via the 9V power supply.
On the System #2:
The green power LED (D) will turn on.
7On the System #1 Unit:
Depress and release Switch 2 (S2 – MCLR).
—
8On the System #2:
Depress and release Switch 2 (S2 – MCLR).
—
9On the PC:
Open the HyperTerminal® program window for
COM 1.
Ensure that the window indicates that the
HyperTerminal program is connected.
—
10 On the PC:
In the HyperTerminal program window, type an “a”.
On the PC:
The HyperTerminal program window will display
an “aA”.
11 On the PC:
Type some additional alpha characters in the
HyperTerminal program window.
On the PC:
The typed alpha character will echo where the case
has changed; lowercase -> uppercase and
uppercase -> lowercase.
12 On the System #2:
Power down the board and remove the tested
MCP212X Developer’s Daughter Board.
—
13 Go to Step #5 —
TABLE E-3: DEMO #1 TEST STEPS
Step Action Result
MCP212X DEVELOPER’S
DAUGHTER BOARD USER’S GUIDE
© 2006 Microchip Technology Inc. DS51571B-page 41
Appendix F. Configuring the HyperTerminal® Program
F.1 CONFIGURING THE HyperTerminal® PROGRAM
To ensure that the PC is able to communicate to the PICDEM™ HPC Explorer Demo
Board, the HyperTerminal program must be properly configured. This section describes
the configuration that the HyperTerminal program should be in.
The screen-shots shown in Figure F-1 through Figure F-6 show the settings of the
HyperTerminal program in the Windows® operating system.
You should save each configuration of the HyperTerminal program in order to easily
distinguish which HyperTerminal program window is “tacking” with which PICDEM™
HPC Explorer Board.
After opening the HyperTerminal program window, select Call -> Disconnect. In the
lower-left corner, the HyperTerminal program window will indicate “Disconnected”.
Next, in the HyperTerminal program window, select File -> Properties. The window in
Figure F-2 is shown. Ensure that the appropriate COM port is selected for both the
“Golden” unit and the “Testing” unit. Then select the Configure button.
FIGURE F-1: HyperTerminal® PROGRAM MAIN WINDOW
MCP212X Developer’s Daughter Board User’s Guide
DS51571B-page 42 © 2006 Microchip Technology Inc.
FIGURE F-2: HyperTerminal® PROGRAM PROPERTIES
CONNECT TO WINDOW
This will open up the Port Settings window. The port settings should be configured as
shown in Figure F-3. After configuring the port settings, select OK. The Figure F-2
window will be shown. Select the Settings tab.
FIGURE F-3: HyperTerminal® PROGRAM PROPERTIES
CONFIGURATION WINDOW
Configuring the HyperTerminal® Program
© 2006 Microchip Technology Inc. DS51571B-page 43
The window will now look as shown in Figure F-4. Ensure that your settings match the
settings shown. Select the ASCII Setup button. This will open the ASCII Setup window
(Figure F-5).
FIGURE F-4: HyperTerminal® PROGRAM PROPERTIES
SETTINGS WINDOW
Ensure that your settings match the settings shown. Select the OK button. The window
in Figure F-4 will again be shown. Select the Input Translation button. This will open
the Translation Button window (Figure F-6). Click OK and close each window. After
these “property” windows are closed, you may wish to save each configuration with a
name that you can remember (one for COM1 and the other for COM2).
FIGURE F-5: HyperTerminal® PROGRAM ASCII SETUP WINDOW
MCP212X Developer’s Daughter Board User’s Guide
DS51571B-page 44 © 2006 Microchip Technology Inc.
FIGURE F-6: HyperTerminal® PROGRAM INPUT TRANSLATION WINDOW
Configuring the HyperTerminal® Program
© 2006 Microchip Technology Inc. DS51571B-page 45
NOTES:
DS51571B-page 46 © 2006 Microchip Technology Inc.
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