Micrel Semiconductor
TEL:
1.408.944.0800
FAX:
1.408.474.1000
HTTP://
www.micrel.com
www.micrel.com
KS8001Product Brief
LinkMD is a trademark of Micrel, Inc.
The KS8001 is a 10BASE-T,100BASE-TX, and 100BASE-
FX Physical Layer Transceiver, which provides MII/RMII/
SMII interfaces to MACs and switches. Utilizing a unique
mixed-signal design that extends signaling distance while
reducing power consumption, the KS8001 represents
Micrel’s fi fth generation single-port Fast Ethernet PHY.
Micrel’s architecture, when run at a core voltage of 1.8V,
allows the KS8001 to dissipate an ultra-low 250mW in
power. This translates to increased reliability while enabling
deployment in today’s power-sensitive applications. Mul-
tiple power-down modes, accessed via confi guration pins
or registers, allow further levels of power saving through
manual selection or automatic detection of cable energy.
Block Diagram
1.8V, 3.3V 10/100BASE-TX/FX
Physical Layer Transceiver
Description
LinkMD
TM
cable diagnostics, an industry fi rst for single-
port Fast Ethernet PHYs, detects common cabling plant
problems such as open and short circuits. Diagnosis and
elimination of cabling faults can lead to reduced user
frustration and fewer equipment returns, both in enterprise
and consumer electronics applications. Combined with
HP Auto-MDIX, deployment is dramatically simplifi ed
by providing the most robust solution for automatically
adjusting to crossover and straight-through cables.
The KS8001 represents a new level of features and
performance, and is an ideal choice of physical layer
transceiver for 10BASE-T, 100BASE-TX, and 100BASE-
FX applications.
For additional information, contact your local Micrel
Field Application Engineer or salesperson.
10/100
Pulse
Shaper
NRZ/NRZI
MLT3 Encoder
Parallel/Serial
Manchester Encoder
4B/5B Encoder
Scrambler
Parallel/Serial
Transmitter
TX+
TX-
Adaptive EQ
Base Line
Wander Correction
MLT3 Decoder
NRZI/NRZ
Clock
Recovery
4B/5B Decoder
Descrambler
Serial/Parallel
Auto
Negotiation
10BASE-T
Receiver
Manchester Decoder
Serial/Parallel
PLL
LED
Driver
MII/RMII/
SMII
Registers
and
Controller
Interface
RX-
RX+
XI
XO SPD
FDX
COL
LINK
Power
Down or
Saving
PWRDWN
RXC
TXD3
TXD0
TXD1
TXD2
RXD3
TXEN
TXC
TXER
MDC
MDIO
COL
CRS
RXER
RXD0
RXD1
RXD2
RXDV
KS8001 BLOCK DIAGRAM
Micrel Semiconductor
TEL:
1.408.944.0800
FAX:
1.408.474.1000
HTTP://
www.micrel.com
Features
Benefi ts
Single chip 10BASE-T/100BASE-TX/100BASE-FX Supports back-to-back operation for copper to fi ber media
Physical Interface converter applications.
Fully compliant to IEEE802.3u standards Design margin for operating with link partners at all speeds.
Low-power CMOS design, power consumption Increased reliability, greater range of power-sensitive
< 250mW applications.
Supports Media Independent Interface (MII), Flexible switch/MAC interfacing options. Optimized pin count
Reduced MII (RMII), and Serial MII (SMII) interfaces lower cost through reduced trace/simplifi ed routing.
Robust operation (130 meters+) Operation over the widest variety of cabling plants.
LinkMD cable diagnostics Diagnose faulty cables including distance to fault.
HP Auto MDI/MDI-X Automatic detection and correction for straight-through or
crossover cables.
Power-down and power-saving modes Automatically shuts down upon cable removal extending
battery life for mobile applications.
Footprint compatible with Micrel KS8721 Easy migration to feature-fi lled KS8001 from existing designs.
Confi gurable through MII serial management ports or Programmable in environments with and without CPU.
via external control pins
Four programmable LED outputs Report complete link status.
Available in lead-free and industrial temperature versions Environmentally friendly and rugged.
Stock Code: M-032805
Applications
LAN on Motherboard
Media Converter
Set Top Box
Cable/DSL Modem
Network Printer
Game Console
Block Diagram: Network Printer Application Block Diagram: Media Converter Application
Reduced MII (RMII), and Serial MII (SMII) interfaces lower cost through reduced trace/simplifi ed routing.
FIBER
MODULE
KS8001
FAST ETHERNET PHY
RJ-45 WITH
INTEGRATED
MAGNETICS
KS8001
FAST ETHERNET PHY
MII/
RMII
RJ-45 WITH
INTEGRATED
MAGNETICS
KS8001
FAST ETHERNET PHY
PRINT ENGINE
ASIC
MII/RMII/
SMII
Location Address Telephone Fax
Corporate HQ 1849 Fortune Drive San Jose, CA 95131 USA +1 (408) 944-0800 +1 (408) 474-1000
Corporate HQ 1849 Fortune Drive San Jose, CA 95131 USA +1 (408) 944-0800 +1 (408) 474-1000
Eastern USA 93 Branch Street Medford, NJ 08055 USA +1 (609) 654-0078 +1 (609) 546-0989
Eastern USA 93 Branch Street Medford, NJ 08055 USA +1 (609) 654-0078 +1 (609) 546-0989
Central USA 722 S. Denton Tap Suite 130 Coppell, TX 75019 USA +1 (972) 393-2533 +1 (972) 393-2540
Central USA 722 S. Denton Tap Suite 130 Coppell, TX 75019 USA +1 (972) 393-2533 +1 (972) 393-2540
Western USA 2180 Fortune Drive San Jose, CA 95131 USA +1 (408) 944-0800 +1 (408) 914-7878
Western USA 2180 Fortune Drive San Jose, CA 95131 USA +1 (408) 944-0800 +1 (408) 914-7878
China Room 712, Block B, Intl. Chamber of Commerce Bldg., Fuhua Rd 1, Futian ShenZhen, PR China 518026 +86 (755) 8302-7618 +86 (755) 8302-7637
China Room 712, Block B, Intl. Chamber of Commerce Bldg., Fuhua Rd 1, Futian ShenZhen, PR China 518026 +86 (755) 8302-7618 +86 (755) 8302-7637
Korea 4F, KTB Building, 826-14, Yeoksam-dong, Kangnam-ku Seoul 135-080 Korea +82 (2) 3466-3000 +82 (2) 3466-2999
Korea 4F, KTB Building, 826-14, Yeoksam-dong, Kangnam-ku Seoul 135-080 Korea +82 (2) 3466-3000 +82 (2) 3466-2999
Taiwan 4F, No. 18, Lane 321, Yang-Guang Street, Nei-Hu Chu Taipei, 11468 Taiwan, R.O.C. +886 (2) 8751-0600 +886 (2) 8751-0746
Taiwan 4F, No. 18, Lane 321, Yang-Guang Street, Nei-Hu Chu Taipei, 11468 Taiwan, R.O.C. +886 (2) 8751-0600 +886 (2) 8751-0746
Singapore 8 Temasek Blvd., #42-01 Suntec Tower Three Singapore 038988 +65-6832-7692 +65-6832-7693
Singapore 8 Temasek Blvd., #42-01 Suntec Tower Three Singapore 038988 +65-6832-7692 +65-6832-7693
Japan 1-16-15 Dogenzaka, Shibuyaku Tokyo 150-0043 Japan +81 (3) 5428-0871 +81 (3) 5428-0872
Japan 1-16-15 Dogenzaka, Shibuyaku Tokyo 150-0043 Japan +81 (3) 5428-0871 +81 (3) 5428-0872
Europe 1st Floor, 3 Lockside Place, Mill Lane Newbury, Berks RG14 5QS UK +44 1635 524455 +44 1635 524466
Europe 1st Floor, 3 Lockside Place, Mill Lane Newbury, Berks RG14 5QS UK +44 1635 524455 +44 1635 524466
Western Europe 10, avenue du Quebec, Villebon BP116 Courtaboeuf Cedex 91944 France +33 (0) 1-6092-4190 +33 (0) 1-6092-4189
Contact Micrel Semiconductor
