am79c961a Advanced Micro Devices, am79c961a Datasheet - Page 142

• Manufacturer Part Number: am79c961a
• Description: Pcnet?-isa Ii Jumperless, Full Duplex Single-chip Ethernet Controller For Isa
• Manufacturer: Advanced Micro Devices

SWITCHING CHARACTERISTICS: SHARED MEMORY MODE (continued)
142
Memory Read Timing
I/O to Memory Command Inactive
IOCS16 Timing
SRAM Read/Write, Boot PROM Read, Address PROM Read on Private Bus
Parameter
Symbol
t
t
t
t
IOCS1
IOCS2
t
t
t
t
t
t
t
t
t
t
t
t
IOM1
IOM2
MR1
MR2
MR3
MR4
MR5
MR6
MR7
MR8
PR4
PR5
PR6
PR7
SA0–15, SBHE,
Setup to
SA0–15, SBHE,
Hold from
MEMR Inactive
SD Hold from
SD Valid from
IOCHRDY Inactive
SD Valid from
AEN, SBHE, SA0–9 to
AEN, SBHE, SA0–9 to IOCS16
Tristated
PRAB Change to PRAB Change,
SRAM Access
PRDB Setup to PRAB Change,
SRAM Access
PRDB Hold from PRAB Change,
SRAM Access
PRAB Change to PRAB Change,
APROM Access
IOCHRDY Delay from
IOW/MEMW to
(S)MEMR/IOR to
Parameter Description
MEMR
MEMR
MEMR
MEMR
IOCHRDY
SMAM/BPAM
SMAM/BPAM
(S)MEMR/IOR
IOW/MEMW
IOCS16
MEMR
Am79C961A
Test Conditions
–130
Min
125
145
10
55
55
55
95
20
5
0
0
0
0
0
0
Max
110
105
155
20
35
10
35
25
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns