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AM79C90PC Datasheet(PDF) 43 Page - Advanced Micro Devices

Part # AM79C90PC
Description  CMOS Local Area Network Controller for Ethernet (C-LANCE)
PDF  62 Pages
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Manufacturer  AMD [Advanced Micro Devices]
Direct Link  http://www.amd.com
Logo AMD - Advanced Micro Devices

AM79C90PC Datasheet(HTML) 43 Page - Advanced Micro Devices

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P R E L I M I N A R Y
AMD
43
Am79C90
SWITCHING WAVEFORMS
TCLK
TX
TENA
RENA
4
5
17881B-41
*During transmit, RENA input must be asserted (HIGH) and remain active-HIGH before TENA goes inactive (LOW). If RENA is
deasserted before TENA is deasserted, LCAR will be reported in TMD3 after the transmission is completed by the C-LANCE.
8
9
2
3
1
7
*
6
Serial Link Timing (Transmit)
Drivers Enabled
O.D.
23
22
24
21
HOLD
HLDA
Bus
Master
Drivers
RESET
Note:
1.
RESET is an asynchronous input to the C-LANCE and is not part of the Bus Acquisition timing. When RESET is asserted, the
C-LANCE becomes a Bus Slave.
17881B-42
Bus Acquisition Timing



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