AM79C976 Datasheet, PDF (284/309 Pages) Advanced Micro Devices – PCnet-PRO™ 10/100 Mbps PCI Ethernet Controller

PRELIMINARY
SWITCHING WAVEFORMS: EXTERNAL MEMORY INTERFACE
Parameter
Symbol
Parameter Name
SSRAM Timing
t_ERCLK
t_HIGH
t_LOW
t_{O_SU}
ERCLK Period
ERCLK High Time
ERCLK Low Time
SSRAM Output Signals
Set up time with respect to rising
edge of ERCLK
t_{ERD_SU}
SSRAM ERD Input Signals Set Up
Time
t_{ERD_H}
SSRAM ERD Input Signals Hold
Time
Test Condition
@ 1.5 V
@ 1.5 V
@ 1.5 V
@ 1.5 V
@ 1.5 V
@ 1.5 V
Min
11.111
4.5
4.5
2.5
5
1
Max
Unit
ns
ns
ns
ns
ns
ns
ERCLK
Output Signals:
ERA, ERADSP, ERADV,
EROE, ERCE, ERWE, ERD
Input Signals: ERD
2.0 V
1.5 V
0.8 V
tERCLK
tHIGH
2.4 V
0.4V
tLOW
tO_SU
2.0 V
1.5 V
0.8 V
tERD_SU
tERD_H
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22929B68
284
Am79C976
8/01/00