am79c961a Advanced Micro Devices, am79c961a Datasheet - Page 139

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

SWITCHING CHARACTERISTICS: BUS MASTER MODE (continued)
Notes:
1. EXTIME is 100 ns when ISACSR2, bit 4, is cleared (default). EXTIME is 0 ns when ISACSR2, bit 4, is set.
2. MSRDA and MSWDA are parameters which are defined in registers ISACSR0 and ISACSR1, respectively.
Master Mode Address PROM Read
Master Mode Boot PROM Read
Parameter
Symbol
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
MB10
MB11
MB12
MB13
MB14
MA1
MA2
MA3
MA4
MA5
MA6
MB1
MB2
MB3
MB4
MB5
MB6
MB7
MB8
MB9
APCS Active
PRDB Setup to
PRDB Hold After
SD Valid from
REF, SBHE,SA0–19 Setup to
SMEMR
REF, SBHE,SA0–19 Hold
SMEMR
SMEMR Inactive
BPCS Active
PRDB Setup to
PRDB Hold After
SD Valid from
SD Hold After
LA20–23 Hold from
LA20–23 Setup to
IOR to
APCS to
IOCHRDY Delay from
SMEMR to
BPCS to
BALE Setup to
Parameter Description
APCS
IOCHRDY
IOCHRDY
BPCS
IOCHRDY
IOCHRDY
SMEMR
APCS
BPCS
MEMR
APCS
BPCS
MEMR
BALE
SMEMR
Am79C961A
Test Conditions
Min
125
140
125
290
20
45
10
55
45
20
10
10
10
0
0
5
0
0
0
0
Max
260
155
260
305
65
10
35
65
10
20
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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