參數(shù)資料
型號: STPCE1EDBI
廠商: 意法半導(dǎo)體
英文描述: X86 Core General Purpose PC Compatible System - on - Chip
中文描述: x86內(nèi)核兼容的通用計算機系統(tǒng)-關(guān)于-芯片
文件頁數(shù): 43/87頁
文件大?。?/td> 1356K
代理商: STPCE1EDBI
ELECTRICAL SPECIFICATIONS
Release 1.3 - January 29, 2002
43/87
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
4.5.6 ISA INTERFACE AC TIMING CHARACTERISTICS
Table 4-7
and
Table 4-11
list the AC characteris-
tics of the ISA interface.
Figure 4-7 ISA Cycle (ref
Table 4-11
)
Note 1: Stands for SMEMR#, SMEMW#, MEMR#, MEMW#, IOR# & IOW#.
The clock has not been represented as it is dependent on the ISA Slave mode.
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
Table 4-11. 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
Note: The signal numbering refers to
Table 4-7
Min
5T
Max
Units
Cycles
5T
5T
1T
Cycles
Cycles
Cycles
9
10
2T
2T
Cycles
Cycles
10
2T
Cycle
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