APX4 DEVELOPMENT KIT
DATA SHEET
Thursday, 22 November 2012
Version 0.6
Bluegiga Technologies Oy
Copyright © 2000-2012 Bluegiga Technologies
All rights reserved.
Bluegiga Technologies assumes no responsibility for any errors which may appear in this manual.
Furthermore, Bluegiga Technologies reserves the right to alter the hardware, software, and/or specifications
detailed here at any time without notice and does not make any commitment to update the information
contained here. Bluegiga’s products are not authorized for use as critical components in life support devices
or systems.
The WRAP, Bluegiga Access Server, Access Point and iWRAP are registered trademarks of Bluegiga
Technologies.
The Bluetooth trademark is owned by the Bluetooth SIG Inc., USA and is licensed to Bluegiga Technologies.
All other trademarks listed herein are owned by their respective owners.
Bluegiga Technologies Oy
VERSION HISTORY
Version
Comment
0.6
Updated pictures and fixed style
0.5
Renamed to development kit
0.4
Added pictures of display board
0.3
Added pictures
0.2
Second draft
0.1
First draft
Bluegiga Technologies Oy
TABLE OF CONTENTS
Ordering information ......................................................................................................................................7
Technical data ...............................................................................................................................................8
Development kit .............................................................................................................................................9
 APx4 Development kit contents ............................................................................................................9
 Mother board functions ..........................................................................................................................9
Mother board interfaces ............................................................................................................................. 10
SO-DIMM Receptacle for APx4 .................................................................................................................. 11
Debug port .................................................................................................................................................. 12
Header J6 ................................................................................................................................................... 13
Header J20 ................................................................................................................................................. 14
Boot mode select on J20 ............................................................................................................................ 15
 Module pins ........................................................................................................................................ 16
Contact Information ........................................................................................................................................... 28
Bluegiga Technologies Oy
DESCRIPTION
The Bluegiga APx4 is a small form factor, low
power system-on-module that includes the
latest wireless connectivity standards: 802.11
b/g/n and Bluetooth 4.0. APx4 is based on
Freescale's i.MX28 processor family and runs
an embedded Linux operating system based on
the Yocto ProjectTM. In addition to integrating
the 454MHz ARM9 processor, the wireless
connectivity technologies, Linux operating
system the APx4 also includes with several built
in applications, such as the 802.11
and Bluetooth 4.0 stacks, Continua
v.1.5 compliant IEEE manager and many more.
This combination provides an ideal platform for
designing multi-radio wireless gateways that
enables fast time-to-market and minimum R&D
risks.
The Bluegiga APx4 software can be easily
extended or tailored customizing the Linux
operating system with applications. The
motherboards for the APx4 can be easily
extended to include almost anything from 3G
modems to Ethernet and audio interfaces to
and touch screen displays.
The Bluegiga APx4 is an ideal product for
applications requiring wireless or wired
connectivity technologies and the processing
power of the ARM9 processor, such as health
and fitness gateways, building and home
automation gateways, M2M, point-of-sale and
industrial connectivity.
APPLICATIONS:
Health gateways
M2M connectivity
Fitness gateways
Home and building automation
Point-of-sale gateways
People and asset tracking
KEY FEATURES
APx4 is a computing platform:
450MHz ARM9 core (Freescale
i.MX28)
64MB RAM
128MB Flash
Real Time Clock
Linux operating system
SO-DIMM form factor
A connectivity platform:
Bluetooth 4.0 dual-mode radio
2.4GHz 802.11 b/g/n radio
Wi-Fi Access Point mode
10/100 Ethernet
USB 2.0 High Speed
With many extension options:
Up to 800 x 480, 24bit display
Resistive touch screen
MMC/SDIO
Multiple SPI, UART and I²C
I²S
PWM, GPIO and AIO
Linux operating system:
Based on the Yocto Project(TM)
Thousands of open source software
packets available
Qualifications:
Bluetooth
CE
FCC and IC
Bluegiga Technologies Oy Page 6 of 28
Figure 1 Development kit top view
Figure 2 Development kit / mother board bottom view
Bluegiga Technologies Oy Page 7 of 28
Ordering information
Product code
CPU and memories
Connectivity
Antenna
APX4-DEVKIT
i.MX283
64MB DDR2
128MB Flash
Bluetooth + Wi-Fi
Internal
Bluegiga Technologies Oy Page 8 of 28
Technical data
Power supply input range
6V-24V DC
Power supply polarity
+ in center
Size
180 x 120mm
Power consumption*
Idle: 0.9W, Boot: 1.25W, WiFi Tx: 1.8W
Power drawn from the USB port and power to display is excluded
Any power supply can be used as long as the input range and polarity are correct, but we recommend
using the one supplied with the development kit.
In case you are using your own power supply, please check the polarity of the power supply.
Positive voltage is in center. Incorrect polarity will damage the board.
Note: The current measurement header must have a jumper installed in order to supply voltage to APx4.
Bluegiga Technologies Oy Page 9 of 28
Development kit
 APx4 Development kit contents
1 x Bluegiga APx4 module
1 x Bluegiga APx4 mother board
1 x 12V power supply
1 x RS232 cable
1 x Ethernet cable
1 x Micro USB cable
Documentation
 Mother board functions
+12V to +5V switch mode power supply feeding APx4
SGTL5000 stereo codec with headphone amplifier
Headers for all signals that are not connected to peripherals
Connectors for
Ethernet
USB host
USB OTG
SD card
Analog audio in/out
Debug RS232 port
Power
Sockets for additional display board
Bluegiga Technologies Oy Page 10 of 28
Mother board interfaces
DC input 12V
RS-232 debug port w/o flow control
SDIO
USB host
USB On-The-Go (OTG)
Ethernet 10Base-T/100Base-TX IEEE 802.3
Socket for APx4
Audio Line input
Audio Line output
Microphone input
Headphone output (stereo)
JTAG header
2x CAN header (can drivers Mounted=FALSE)
Bluetooth SPI
Wi-Fi SPI
CPU Reset Button
Factory Reset Button
1.27mm sockets for display board on bottom
Header for current measurement
Bluegiga Technologies Oy Page 11 of 28
SO-DIMM Receptacle for APx4
Suitable receptacles are available from multiple vendors. For example TE Connectivity part number 1473005-
1 is used on the development kit. Digi-Key’s part number is A99605-ND.
PCB footprint and schematic symbol for the mentioned part number will be available for download for
customers. The format is Mentor Graphics’ PADS format.
Bluegiga Technologies Oy Page 12 of 28
Debug port
The evaluation board has a DB9 male connector which is connected to APx4's debug port. Between APx4
and the DB9 there is an RS-232 driver.
Pin#
Net name
Baud rate
115.200 baud/s
Data bits
8
Parity
None
Stop bits
1
Flow control
None
Table 1 Debug port parameters
Pin#
Net name
Function
Direction
2
DUART_TX
Debug UART,
APx4's Tx line
From APx4 to PC
3
DUART_RX
Debug UART,
APx4's Rx line
From PC to APx4
5
GND
Ground
-
Table 2 Debug port pins
See development kit's schematic for more details.
Bluegiga Technologies Oy Page 13 of 28
Header J6
Pin#
Function
Pin
#
Function
1
GND
2
BOOTMODE
FLOAT: Boot from NAND
L: Boot from UART/USB
3
GND
4
BT_SPI_PCM1N
5
SPDIF
6
BT_PCM1_IN_MOSI
7
I2C0_SDA
8
BT_PCM1_OUT_MISO
9
I2C0_SCL 
10
BT_PCM1_SYNC_CSN
11
PWM3 
12
BT_PCM1_CLK_CLK
13
PWM4 
14
BT_PIO7
15
SSP2_MOSI 
16
BT_PIO8
17
SSP2_MISO 
18
BT_PIO9
19
SSP2_SCK 
20
BT_PIO25
21
SSP2_SS0 
22
SAIF0_MCLK_HDR
23
GPMI_RDY2 
24
SAIF1_SDATA0
25
GPMI_RDY3 
26
SAIF0_SDATA0
27
GPMI_CE2N 
28
SAIF0_BITCLK
29
GPMI_CE3N 
30
SAIF0_LRCLK
31
LRADC0 
32
INT_EXT_RTC_N
33
LRADC1 
34
HSADC0
35
DEBUG 
36
3V3
37
3V3
38
3V3
39
PSWITCH_OUT
40
GND
Table 3 Debug port pins
Bluegiga Technologies Oy Page 14 of 28
Header J20
Pin#
Function
Pin
#
Function
1
LCD_D0
2
Pull-up to 3V3
3
LCD_D1
4
Pull-up to 3V3
5
Pull-down to GND
6
LCD_D2
7
LCD_D3
8
Pull-up to 3V3
9
LCD_D4
10
Pull-up to 3V3
11
SDIO_DAT1_OUT
12
13
SDIO_DAT0_OUT
14
15
SDIO_CLK_OUT
16
17
SDIO_CMD_OUT
18
19
SDIO_DAT3_OUT
20
21
SDIO_DAT2_OUT
22
23
AUART0_TX
24
25
AUART0_CTS 
26
VBATTERY
27
AUART0_RX 
28
VBACKUP
29
AUART0_RTS 
30
1V4_CPU
31
PWM0_DUART_RX 
32
1V8
33
PWM1_DUART_TX 
34
3V3_MODULE
35
36
4V2_CPU
37
38
5V0
39
GND
40
GND
Table 4 Debug port pins
Bluegiga Technologies Oy Page 15 of 28
Boot mode select on J20
The four upper rows on J20 determine APx4's boot mode by using jumpers according to following table:
Jumper1
Jumper2
Jumper3
Jumper4
Boot mode
Pins
1-2
3-4
5-6
7-8
NAND
0
0
0
0
SD Card
1
0
1
1
USB OTG
0
0
1
0
JTAG
0
1
0
0
Table 5 APx4 boot mode
Remove all jumpers for ordinary boot from NAND flashed in factory.
Bluegiga Technologies Oy Page 16 of 28
 Module pins
Note: Signals/nets marked with a star (*) are not present on standard version
Pin#
Default function
Net name
1
5V input
VIN
2
5V input
VIN
3
5V input
VIN
4
5V input
VIN
5
Battery input/output
VBATTERY
6
Battery input/output
VBATTERY
7
Battery input/output
VBATTERY
8
Bootmode
BOOTMODE
9
3.3V output
3V3
10
3.3V output
3V3
11
3.3V output
3V3
12
3.3V output
3V3
13
RTC battery
VBACKUP
14
PS switch
PSWITCH_OUT
15
NC
NC
16
NC
NC
17
Reset in - Master reset
RESETN
18
Ground
GND
Table 6 Main power pins
Bluegiga Technologies Oy Page 17 of 28
Pin#
Default function
Net name
19
Ethernet TX -
ETN_TXN
20
GND
GND
21
Ethernet TX +
ETN_TXP
22
3.3V output
3V3
23
Ethernet RX -
ETN_RXN
24
Ethernet LED
#ETN_LED1
25
Ethernet RX +
ETN_RXP
26
GND
GND
Table 7 Ethernet
Pin#
Default function
Net name
27
USB External VBUS enable
SPDIF*
28
NC
29
USB D-
USB1DM
30
NC
31
USB D+
USB1DP
32
Ground
GND
Table 8 USB Host
Pin#
Default function
Net name
33
USB OTG id
USB0_ID
34
NC
35
USB D-
USB0DM
36
NC
37
USB D+
USB0DP
38
NC
39
Ground
GND
Table 9 USB On-the-go
Bluegiga Technologies Oy Page 18 of 28
Pin#
Default function
Net name
40
I2C Data
I2C0_SDA
41
I2C Clock
I2C0_SCL
Table 10 I2C 0
Pin#
Default function
Net name
42
PWM (Backlight)
PWM4
43
Status led
PWM3
Table 11 Dedicated PWMs
Pin#
Default function
Net name
44
Slave select 1
SDIO_DAT1_OUT*
45
Slave select 2
SDIO_DAT2_OUT*
46
Command - Master out, slave in
SDIO_CMD_OUT*
47
Data 0, Master in, slave out
SDIO_DAT0_OUT*
48
Clock
SDIO_CLK_OUT*
49
Ready - Slave select 0
SDIO_DAT3_OUT*
50
Ground
GND
Table 12 SSP2 – SDIO/MMC/SPI
Pin#
Default function
Net name
51
Card detect
SSP0_DETECT
52
Data 0
SSP0_DATA0
53
Data 1
SSP0_DATA1
54
Data 2
SSP0_DATA2
55
Data 3
SSP0_DATA3
56
Command
SSP0_CMD
57
Clock
SSP0_SCK
58
Ground
GND
Table 13 SSP0 - SDIO/MMC/SPI
Bluegiga Technologies Oy Page 19 of 28
Pin#
Default function
Net name
59
UART transmit
AUART0_TX
60
UART receive
AUART0_RX
61
UART clear-to-send
AUART0_CTS
62
UART request-to-send
AUART0_RTS
Table 14 UART 0
Pin#
Default function
Net name
63
UART transmit
SSP2_MOSI
64
UART receive
SSP2_SCK
65
NC
66
NC
Table 15 UART 2
Pin#
Default function
Net name
67
UART transmit and USB OTG
power enable
SSP2_SS0
68
UART receive and USB HOST
power enable
SSP2_MISO
69
NC
70
NC
71
Ground
GND
Table 16 UART 3
Pin#
Default function
Net name
72
Bluetooth GPIO
BT_PIO7
73
Bluetooth GPIO
BT_PIO8
74
Bluetooth GPIO
BT_PIO9
75
Bluetooth GPIO
BT_PIO25
Table 17 Bluetooth GPIO
Bluegiga Technologies Oy Page 20 of 28
Pin#
Default function
Net name
76
CAN 0 transmit
GPMI_RDY2*
77
Ground
GND
78
CAN 1 transmit
GPMI_CE2N*
79
CAN 1 receive
GPMI_CE3*
80
Ground
GND
81
CAN 0 receive
GPMI_RDY3*
82
Ground
GND
Table 18 CAN
Pin#
Default function
Net name
83
MCLK
SAIF0_MCLK
84
Data line 1
SAIF1_SDATA0
85
Data line 0
SAIF0_SDATA0
86
Bit clock
SAIF0_BITCLK
87
Left/Right clock
SAIF0_LRCLK
88
GND
GND
Table 19 Primary audio / UART 4
Bluegiga Technologies Oy Page 21 of 28
Pin#
Default function
Net name
89
NC
90
NC
91
NC
92
NC
93
NC
94
Ground
GND
95
NC
96
NC
97
NC
98
NC
99
NC
100
NC
Table 20 Reserved group 1
Bluegiga Technologies Oy Page 22 of 28
Pin#
Default function
Net name
101
NC
102
Ground
GND
103
NC
104
NC
105
NC
106
NC
107
1.4V output
1V4_CPU
108
1.8V output
1V8
109
4.2V output
4V2_CPU
110
NC
111
GND
112
NC
113
NC
114
NC
115
NC
116
Ground
GND
Table 21 Reserved group 2
Bluegiga Technologies Oy Page 23 of 28
Pin#
Default function
Net name
117
Data 0
LCD_D0
118
Data 1
LCD_D1
119
Data 2
LCD_D2
120
Data 3
LCD_D3
121
Data 4
LCD_D4
122
Data 5
LCD_D5
123
Data 6
LCD_D6
124
Data 7
LCD_D7
125
Data 8
LCD_D8
126
Data 9
LCD_D9
127
Data 10
LCD_D10
128
Data 11
LCD_D11
129
Ground
GND
130
Data 12
LCD_D12
131
Data 13
LCD_D13
132
Data 14
LCD_D14
133
Data 15
LCD_D15
134
Data 16
LCD_D16
135
Data 17
LCD_D17
136
Data 18
LCD_D18
137
Data 19
LCD_D19
138
Data 20
LCD_D20
139
Data 21
LCD_D21
140
Data 22
LCD_D22
141
Data 23
LCD_D23
142
Ground
GND
Bluegiga Technologies Oy Page 24 of 28
Table 22 LCD data lines
Pin#
Default function
Net name
143
Horizontal Sync
LCD_WR_RWN
144
Vertical Sync
LCD_RD_E
145
LCD Enable
LCD_CS
146
Dot clock
LCD_RS
147
Ground
GND
Table 23 LCD control lines
Pin#
Function
Net name
148
Debug UART RX or I2C1_SDA
PWM0 (also connected to PTH
pins on right side)
149
Debug UART TX or I2C1_SCL
PWM1 (also connected to PTH
pins on right side)
150
LCD reset / GPIO
LCD_RESET
151
NC
Table 24 Debug UART / PWM / I2C1 / GPIO
Bluegiga Technologies Oy Page 25 of 28
Pin#
Function
Net name
152
NC
153
NC
154
NC
155
NC
156
NC
157
NC
158
NC
159
Ground
GND
160
Ground
GND
161
NC
162
NC
163
Ground
GND
164
Ground
GND
165
NC
166
NC
167
Ground
GND
168
Ground
GND
169
NC
170
WiFi Activity
WIFI_ACT
171
Ground
GND
Table 25 Reserved group 3
Bluegiga Technologies Oy Page 26 of 28
Pin#
Function
Net name
172
Wi-Fi Debug SPI - MISO
SPI_WIFI_MISO
173
Wi-Fi Debug SPI – CLK
SPI_WIFI_CLK
174
Wi-Fi Debug SPI – MOSI
SPI_WIFI_MOSI
175
Wi-Fi Debug SPI - CS
SPI_WIFI_CS
176
RTC interrupt
INT_EXT_RTC_N
177
Factory reset button / JTAG return
clock
JTAG_RTCK
178
JTAG test clock
JTAG_TCK
179
JTAG test data in
JTAG_TDI
180
JTAG test data out
JTAG_TDO
181
JTAG test mode state
JTAG_TMS
182
JTAG test reset
JTAG_TRST
183
Ground
GND
184
JTAG enable boundary scan
DEBUG
Table 26 Misc
Pin#
Function
Net name
185
Touch controller XN
LRADC4
186
Touch controller XP
LRADC2
187
Touch controller YN
LRADC5
188
Touch controller YP
LRADC3
189
Touch controller WIPER
LRADC6
190
Generic ADC 0
LRADC0
191
Generic ADC 1
LRADC1
192
High speed ADC
HSADC0
193
Ground
GND
194
Ground
GND
Table 27 ADC
Bluegiga Technologies Oy Page 27 of 28
Pin #
Function
Net name
195
Bluetooth debug enable
BT_SPI_PCM1N
196
PCM in
BT_PCM1_IN
197
PCM out
BT_PCM1_OUT
198
PCM clock
BT_PCM1_CLK
199
PCM sync
BT_PCM1_SYNC
200
Ground
GND
Table 28 Bluetooth audio
Bluegiga Technologies Oy Page 28 of 28
Contact Information
Sales: sales@bluegiga.com
Technical support: support@bluegiga.com
http://techforum.bluegiga.com
Orders: orders@bluegiga.com
WWW: www.bluegiga.com
www.bluegiga.hk
Head Office / Finland:
Phone: +358-9-4355 060
Fax: +358-9-4355 0660
Sinikalliontie 5A
02630 ESPOO
FINLAND
Postal address / Finland:
P.O. BOX 120
02631 ESPOO
FINLAND
Sales Office / USA:
Phone: +1 770 291 2181
Fax: +1 770 291 2183
Bluegiga Technologies, Inc.
3235 Satellite Boulevard, Building 400, Suite 300
Duluth, GA, 30096, USA
Sales Office / Hong-Kong:
Phone: +852 3182 7321
Fax: +852 3972 5777
Bluegiga Technologies, Inc.
19/F Silver Fortune Plaza, 1 Wellington Street,
Central Hong Kong
Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
Bluegiga Technologies:
DKAPX4