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參數資料
型號: W89C940
廠商: WINBOND ELECTRONICS CORP
英文描述: ELANC-PCI (TWISTED-PAIR ETHER-LAN CONTROLLER WITH PCI INTERFACE)
中文描述: ELANC -的PCI(雙絞線醚局域網控制器帶有PCI接口)
文件頁數: 54/61頁
文件大小: 353K
代理商: W89C940
W89C940
54
32KX8-220 BPROM/ FLASH MEMORY
Read cycle
CLK
FRAME#
AD[31::0]
TRDY#
IRDY#
C_BEB[3:0]#
DEVSEL#
MSA14/L
MSA[9:0]
MSA[13:10]
BPCSB
MSRDB
MSD[7:0]
0
1
2
3
4
5
6
7
8
9
10
11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26
T1
T2
T3
T4
T5
T6
T7
T8
T9
T10
T11
T12
T9
T10
T11
T12
SYMBOL
T1
T2
T3
T4
T5
T6
T7
T8
T9
T10
T11
T12
Note: 1) The other timing requirements for PCI signal are as the read transaction timing.
2) BPROM/FLASH memory access could be byte, word or double word access.
The timing is the same.
DESCRIPTION
clock 4 to MSA14/L valid
clock 5 to MSA14/L deasserted time
clock 6 to MSA bus valid
clock 14 to MSA bus valid
clock 23 to MSA deasserted
clock 4 to MSA high nibble valid
clock 6 to BPCSB valid
clock 25 to BPCSB deasserted
clock 8/ clock 17 to MSRDB asserted time
clock 13/ clock 22 to MSRDB deasserted time
MSD setup time from clock 13
MSD hold time from clock 15
MIN
8
8
8
8
8
8
15
7
15
8
7
0
TYPICAL
13
13
13
13
13
13
20
12
20
13
MAX
18
18
18
18
18
18
25
17
25
18
UNIT
nsec
nsec
nsec
nsec
nsec
nsec
nsec
nsec
nsec
nsec
nsec
nsec
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