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CDB8952
Advanced Product Databook
FEATURES
! IEEE 802.3 compliant 10Base-T and 100Base-X
Physical Interface.
! Media Supported:
— 10Base-T
— 100Base-TX
— 100Base-FX (with optional fiber transceiver installed)
! IEEE 802.3u MII Interface with extended register
support.
! LED indicators for Power, Link Status, Collision,
Full/Half Duplex, Transmit Activity, Receive
Activity, 100 Mb/s Speed, and 10 Mb/s Speed.
! Hardware configurable through jumper settings,
or software configurable through the MII interface.
! Operates from single 5 V supply, or may be
optionally configured for interface to 3.3 V MII.
Crystal LAN? 10Base-T
and 100Base-X Transceiver
Evaluation Board
DESCRIPTION
The CDB8952 Evaluation Board provides a platform for
evaluating the CS8952 10Base-T and 100Base-X
Transceiver. It is designed to plug into a transceiver test
box via a standard 40-pin MII connector. System de-
signers can use the CDB8952 to fully exercise the
CS8952 without the time and expense of custom
prototyping.
Though the CBD8952 is configured from the factory for
5 V operation with the power supplied from the test box,
it may also be configured for 3.3 V MII systems.
ORDERING INFORMATION
CS8952-CQ 0° to +70° C
CDB8952
100-pin TQFP
Evaluation Board
The CDB8952 may be optionally configured with a fiber
interface module for 100Base-FX testing.
S2
S1
MII_PWR
+5V
POWER
U6
J5
TEST
RESET
C27
U4
C1
J6
C3
L2
HFBR-5103
Fiber
Transceiver
L1
CDB8952 REV. B EVALUATION BOARD
MIIDRV
HDR1
J1
TP2
U2
Y1
T1
HDR42
CS8952
TP1
Isolation
Transformer
Shielded
RJ45
TXCLK
S3
C4
PHYAD4
PHYAD3
PHYAD2
AN0
AN1 TXS1
TXS0 TCM
TX
RX LNK FDX COL
C46
PHYAD1
PHYAD0
HDR4 HDR6
HDR5 HDR7
LED6
LED7
LED1
LED2
LED3
LED5
LED4
CIRRUS LOGIC ADVANCED PRODUCT DATABOOK
DS206DB2
Copyright ? Cirrus Logic, Inc. 1998
(All Rights Reserved)
OCT ‘01
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