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CS8904 Datasheet(PDF) 11 Page - Cirrus Logic

Part # CS8904
Description  ETHERNET TRANSCEIVER
PDF  34 Pages
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Manufacturer  CIRRUS [Cirrus Logic]
Direct Link  http://www.cirrus.com
Logo CIRRUS - Cirrus Logic

CS8904 Datasheet(HTML) 11 Page - Cirrus Logic

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DS191PP2
11
CS8904
Crystal LAN™ Quad Ethernet Transceiver
CIRRUS LOGIC ADVANCED PRODUCT DATABOOK
Controller Compatibility
Mode
Selected
MODE2
Pin
MODE1
Pin
MODE0
Pin
Advanced Micro Devices AM7990, Motorola 68EN360, or
compatible controllers
Mode 1
1
0
0
Intel 82586, Intel 82596, or compatible controllers
Mode 2
1
0
1
Fujitsu MB86950, Fujitsu MB86960, or compatible controllers
Mode 3
1
1
0
National Semiconductor 8390, Texas Instruments TMS380C26, or
compatible controllers
Mode 4
1
1
1
Seeq 8005 or compatible controller
Mode 5
0
1
1
Reserved; Operation Undefined
0
1
0
Reserved; Operation Undefined
0
0
1
Reserved; Operation Undefined
0
0
0
Table 1. Mode Selection Summary
Parameter
Mode 1
Mode 2
Mode 3
Mode 4
Mode 5
Mode Bits (MODE2, MODE1, MODE0)
1 0 0
1 0 1
1 1 0
1 1 1
0 1 1
Controller Compatibility
AMD
Motorola
Intel
Fujitsu
National
TI
SEEQ
Edge of TxCLK where TxDATA is sampled
Rising
Falling
Falling
Rising
Rising
Polarity of Active TxENBL
High
Low
High
High
High
Polarity of Active LOOP
High
Low
High
High
High
Polarity of Active COLL
High
Low
Low
High
High
Edge of RxCLK where RxDATA is clocked.
Rising
Falling
Falling
Rising
Rising
Polarity of Active CD
High
Low
High
High
High
Level of RxDATA when CD is deasserted
High
High
Low
Low
Low
RxCLK after CD is deasserted
5 cycles
5 cycles
Continuous
5 cycles
Continuous
Table 2. Mode Operation Comparison



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