am79c960 Advanced Micro Devices, am79c960 Datasheet - Page 95

• Manufacturer Part Number: am79c960
• Description: Pcnettm-isa Single-chip Ethernet Controller
• Manufacturer: Advanced Micro Devices

SWITCHING CHARACTERISTICS: SHARED MEMORY MODE (continued)
Parameter
Memory Read Timing
I/O To Memory Command Inactive
IOCS16 Timing
SRAM Read/Write, Boot PROM Read, Address PROM Read on Private Bus
Symbol
t
t
t
t
IOCS1
IOCS2
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
IOM1
IOM2
MR1
MR2
MR3
MR4
MR5
MR6
MR7
MR8
PR1
PR2
PR3
PR4
PR5
PR6
PR7
SA0–9, PRAB10–15,
SBHE,
Setup to
SA0–9, PRAB10–15, SBHE,
MEMR Inactive
SD Hold After
SD Valid From
IOCHRDY Inactive
SD Valid From
AEN, SBHE, SA0–9 to
AEN, SBHE, SA0–9 to IOCS16
tristated
Active (Driven by Am79C960)
PRAB10–15 Inactive to
PRAB Change to PRAB
Change, SRAM Access
PRDB Setup to PRAB
Change, SRAM Access
PRDB Hold After PRAB
Change, SRAM Access
PRAB Change to PRAB
Change, APROM Access
SMAM/BPAM Hold After
MEMR
IOCHRDY Delay From
IOW/MEMW to
(S)MEMR/IOR to
ABOE to PRAB10–15 Tristated
ABOE to PRAB10–15
Parameter Description
SMAM/BPAM
MEMR
MEMR
MEMR
IOCHRDY
(S)MEMR/IOR
IOW/MEMW
IOCS16
ABOE
MEMR
P R E L I M I N A R Y
Test Conditions
Am79C960
–130
Min
125
145
10
55
55
55
25
95
20
5
0
0
0
0
0
0
5
0
Max
110
105
155
20
35
10
35
25
20
55
25
AMD
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
1-437