STPCI01 STMicroelectronics, STPCI01 Datasheet - Page 46

• Manufacturer Part Number: STPCI01
• Description: STPC INDUSTRIAL - PC COMPATIBLE EMBEDED MICROPROC
• Manufacturer: STMicroelectronics

ELECTRICAL SPECIFICATIONS
4.5.4 ISA INTERFACE AC TIMING CHARACTERISTICS
Figure 4-8 ISA Cycle (ref table
Table 4-8. ISA Bus AC Timing
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Note 1; Stands for SMEMR#, SMEMW#, MEMR#, MEMW#, IOR# & IOW#.
Note; The clock has not been represented as it cannot be accurately represented depending on the ISA Slave mode.
Note; The signal numbering refers to
CONTROL (Note 1)
Name
10e
WRITE DATA
10
10
11
READ DATA
2
3
9
IOCHRDY
LA [23:17]
SA [19:0]
IOCS16#
MCS16#
AEN
ALE
Parameter
LA[23:17] valid before ALE# negated
LA[23:17] valid before MEMR#, MEMW# asserted
SA[19:0] & SBHE valid before ALE# negated
SA[19:0] & SBHE valid before MEMR#, MEMW# asserted
SA[19:0] & SHBE valid before SMEMR#, SMEMW# asserted
SA[19:0] & SBHE valid before IOR#, IOW# asserted
XTALO to IOW# valid
10a Memory access to 16 bit ISA Slave
10b Memory access to 8 bit ISA Slave
10d Memory access to 8 bit ISA Slave
10c Memory access to 16 bit ISA Slave
3a Memory access to 16 bit ISA Slave
3b Memory access to 8 bit ISA Slave
Valid Address
2
Valid AENx
3
Table
12
12
Table 4-8
13
9
10
14
4-8)
Issue 2.4 - February 11, 2002
18
33
22
61
34
Valid Address, SBHE*
37
41
38
47
15
11
42
48
23
23
25
24
VALID DATA
26
26
Min
5T
5T
5T
1T
2T
2T
2T
2T
2T
55
56
54
V.Data
57
29
58
59
27
64
Max
28
28
Cycles
Cycles
Cycles
Cycles
Cycles
Cycles
Cycles
Units
Cycle
Cycle