CLIENT ST Microelectronics, Inc., CLIENT Datasheet - Page 45

• Manufacturer Part Number: CLIENT
• Description: STPC Client Datasheet / PC Compatible Embeded Microprocessor
• Manufacturer: ST Microelectronics, Inc.

Table 4-8. ISA Bus AC Timing
Note; The signal numbering refers to
Note 4; These timings are extracted from simulations and are not garanteed by testing
Name
55a
55b
64a
64b
41
42
47
48
54
56
57
58
59
61
61
61
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
Parameter
38l
SA[19:0] SBHE valid to IOCHRDY negated
41a
41b
41c
41d
SA[19:0] SBHE valid to read data valid
42b
42e
42h
42l
MEMR#, MEMW#, SMEMR#, SMEMW#, IOR#, IOW# asserted to IOCHRDY negated
47a
47b
47c
47d
MEMR#, SMEMR#, IOR# asserted to read data valid
48b
48e
48h
48l
IOCHRDY asserted to read data valid
54a
54b
54c
54d
IOCHRDY asserted to MEMR#, MEMW#, SMEMR#,
SMEMW#, IOR#, IOW# negated
IOCHRY asserted to MEMR#, SMEMR# negated (refresh)
IOCHRDY asserted to next ALE# asserted
IOCHRDY asserted to SA[19:0], SBHE invalid
MEMR#, IOR#, SMEMR# negated to read data invalid
MEMR#, IOR#, SMEMR# negated to daabus float
Write data before MEMW# asserted
61a
61b
Write data before SMEMW# asserted
61c
61d
Write Data valid before IOW# asserted
61e
61f
MEMW# negated to write data invalid - 16 bit
MEMW# negated to write data invalid - 8 bit
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
I/O access to 8 bit ISA Slave Standard Cycle
Memory access to 16 bit ISA Slave
Memory access to 8 bit ISA Slave
I/O access to 16 bit ISA Slave
I/O access to 8 bit ISA Slave
Memory access to 16 bit ISA Slave Standard cycle
Memory access to 8 bit ISA Slave Standard cycle
I/O access to 16 bit ISA Slave Standard cycle
I/O access to 8 bit ISA Slave Standard cycle
Memory access to 16 bit ISA Slave
Memory access to 8 bit ISA Slave
I/O access to 16 bit ISA Slave
I/O access to 8 bit ISA Slave
Memory access to 16 bit ISA Slave Standard Cycle
Memory access to 8 bit ISA Slave Standard Cycle
I/O access to 16 bit ISA Slave Standard Cycle
I/O access to 8 bit ISA Slave Standard Cycle
Memory access to 16 bit ISA Slave
Memory access to 8 bit ISA Slave
I/O access to 16 bit ISA Slave
I/O access to 8 bit ISA Slave
Memory access to 16 bit ISA Slave
Memory access to 8 bit ISA Slave (Byte copy at end of
start)
Memory access to 16 bit ISA Slave
Memory access to 8 bit ISA Slave
I/O access to 16 bit ISA Slave
I/O access to 8 bit ISA Slave
Table 4-10
Issue 2.2 - October 13, 2000
ELECTRICAL SPECIFICATIONS
1T(R)/2T(W)
1T(R)/2T(W)
1T(R)/2T(W)
1T(R)/2T(W)
Min
10T
12T
12T
10T
10T
6T
6T
4T
4T
2T
5T
2T
5T
2T
5T
2T
5T
1T
1T
2T
2T
0T
0T
2T
2T
2T
2T
2T
2T
1T
1T
Max
Cycles
Cycles
Cycles
Cycles
Cycles
Cycles
Cycles
Cycles
Cycles
Cycles
Cycles
Cycles
Cycles
Cycles
Cycles
Cycles
Cycles
Cycles
Cycles
Cycles
Cycles
Cycles
Cycles
Cycles
Cycles
Cycles
Cycles
Cycles
Cycles
Cycles
Cycles
Cycles
Cycles
Cycles
Cycles
Units
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