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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: 47/61頁
文件大小: 353K
代理商: W89C940
W89C940
47
T2
T3
T4
T5
T6
T7
clock n+6 to MSA valid
clock n+7 to RCSB deasserted time
clock n+4 to MSRDB valid
clock n+7 to MSRDB deasserted time
MSD setup tim to clock n+6
MSD hold time from clock n+6
25
10
22
15
7
0
28
15
27
20
30
20
30
25
nsec
nsec
nsec
nsec
nsec
nsec
Remote Read Word Access Cycle
CLK
1
2
3
FRAME#
AD[31::0]
ADDRESS
BUS CMD
BE#'s
TRDY#
IRDY#
C_BE#[3:0]
DEVSEL#
MSRDB
RCSB
MSA0-13
MSWRB
(Read)
MSD0-7
0
T2
T1
T4
n+4
n+5
n+6
DATA
T8
T3
T5
n+9
n+10
n+11
T6
T7
T7
T6
n+8
Note:
1) The other timing requirements for PCI signal are as the read transaction timing.
2) n=0,1,2,3,..... when local DMA get the control of the bus, PCI bus will insert wait state.
Wait state number is n.
SYMBOL
T1
DESCRIPTION
MIN
20
TYPICAL
25
MAX
30
UNIT
nsec
clock n+4 to RCSB and MSA valid (note
2)
clock n+6 to MSA valid
clock n+7 to RCSB deasserted time
clock n+4 to MSRDB valid
clock n+7 to MSRDB deasserted time
T2
T3
T4
T5
25
10
22
15
28
15
27
20
30
20
30
25
nsec
nsec
nsec
nsec
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