am79c960 Advanced Micro Devices, am79c960 Datasheet - Page 92

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

1-434
SWITCHING CHARACTERISTICS: BUS MASTER MODE (continued)
Parameter
Master Mode Bus Release
Master Write Cycles
Master Read Cycles
Symbol
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
MMBR1
MMBR2
MMBR3
MMBR4
MMW10
MMW11
t
t
t
t
t
t
t
t
t
MMR10
MMR11
MMW1
MMW2
MMW3
MMW4
MMW5
MMW6
MMW7
MMW8
MMW9
MMR1
MMR2
MMR3
MMR4
MMR5
MMR6
MMR7
MMR8
MMR9
AMD
Command Deassert to
SA0–19, LA17–23 Tristated,
SBHE, SA0–19, LA17–23,
Active to
MEMW Active
MEMW Inactive
LA17–23,SD Inactive
SBHE, SA0–19, LA17–23, SD
Hold After
SBHE, SA0–19, LA17–23,
SD Setup to
From
IOCHRDY Inactive
SD Active to
SD Setup to
SBHE, SA0–19, LA17–23,
Active to
MEMR Active
MEMR Inactive
LA17–23 Inactive
SBHE, SA0–19, LA17–23
Hold After
SBHE, SA0–19, LA17–23
Setup to
IOCHRDY Inactive
SD Setup to
SD Hold After
DRQ to
DRQ to
DRQ to Command, SBHE,
MEMW to SBHE, SA0–19,
IOCHRDY Delay
IOCHRDY to
MEMR to SBHE, SA0–19,
IOCHRDY Delay From
MEMR
IOCHRDY to
Parameter Description
MEMW
MEMR
MEMW
MEMR
DACK
MASTER
MEMW
MEMW
MEMW
MEMW
MEMR
MEMW
MEMR
MEMW
MEMR
DRQ
(Note 1)
(Note 2)
(Note 1)
(Note 1)
(Note 1)
(Note 1)
(Note 1)
(Note 2)
(Note 1)
(Note 1)
P R E L I M I N A R Y
Test Conditions
Am79C960
MSWRA – 10
EXTIME + 45
EXTIME + 97
EXTIME + 45
EXTIME + 20
EXTIME + 20
EXTIME + 45
EXTIME + 97
EXTIME + 45
MSRDA – 10
t
t
MMW2
MMR2
Min
–15
130
130
45
40
45
45
55
45
45
55
30
0
0
– 175
– 175
EXTIME + 105
EXTIME + 105
EXTIME + 65
EXTIME + 55
EXTIME + 60
EXTIME + 60
EXTIME + 60
EXTIME + 55
MSWRA + 5
MSRDA + 5
Max
65
60
55
60
55
55
0
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns