參數(shù)資料
型號(hào): STPCI2
英文描述: STPC ATLAS DATASHEET / X86 CORE PC COMPATIBLE SYSTEM-ON-CHIP FOR TERMINALS
中文描述: STPC阿特拉斯部件/ x86內(nèi)核PC兼容的系統(tǒng)單芯片貨柜碼頭
文件頁(yè)數(shù): 46/71頁(yè)
文件大小: 1071K
代理商: STPCI2
ELECTRICAL SPECIFICATIONS
46/69
Issue 2.4 - February 11, 2002
4.5.4 ISA INTERFACE AC TIMING CHARACTERISTICS
Figure 4-8 ISA Cycle (ref table
Table 4-8
)
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.
Table 4-8. ISA Bus AC Timing
Name
2
3
Parameter
LA[23:17] valid before ALE# negated
LA[23:17] valid before MEMR#, MEMW# asserted
3a Memory access to 16 bit ISA Slave
3b Memory access to 8 bit ISA Slave
SA[19:0] & SBHE valid before ALE# negated
SA[19:0] & SBHE valid before MEMR#, MEMW# asserted
10a Memory access to 16 bit ISA Slave
10b Memory access to 8 bit ISA Slave
SA[19:0] & SHBE valid before SMEMR#, SMEMW# asserted
10c Memory access to 16 bit ISA Slave
10d Memory access to 8 bit ISA Slave
SA[19:0] & SBHE valid before IOR#, IOW# asserted
XTALO to IOW# valid
Note; The signal numbering refers to
Table 4-8
Min
5T
Max
Units
Cycles
5T
5T
1T
Cycles
Cycles
Cycles
9
10
2T
2T
Cycles
Cycles
10
2T
2T
2T
Cycle
Cycle
Cycles
10e
11
Valid AENx
Valid Address
Valid Address, SBHE*
V.Data
VALID DATA
54
28
26
64
59
58
55
23
61
48
47
57
27
24
42
41
10
11
34
33
3
22
56
29
25
9
18
2
12
38
37
15
14
13
ALE
AEN
LA [23:17]
SA [19:0]
CONTROL (Note 1)
IOCS16#
MCS16#
IOCHRDY
READ DATA
WRITE DATA
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