w89c940 Winbond Electronics Corp America, w89c940 Datasheet - Page 50

• Manufacturer Part Number: w89c940
• Description: Elanc-pci Twisted-pair Ether-lan Controller With Pci Interface
• Manufacturer: Winbond Electronics Corp America

CLK
FRAME#
MSA0-13
RCSB
MSRDB
MSWRB
MSD0-7
DEVSEL#
AD[31::0]
IRDY#
TRDY#
Note: 1) The other timing requirements for PCI signal are as the read transaction timing.
C_BE[3:0]#
T10
T11
T1
T2
T3
T4
T5
T6
T7
T8
T9
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.
Clock n+5 to MSA, RCSB, and
MSD valid (note 2)
clock n+7 to MSA valid
clock n+6 to MSWRB valid
Write pulse width
clock n+10 to RCSB deasserted
clock n+9 to MSA deasserted
clock n+5 to MSD valid
clock n+7 to MSD deasserted
clock n+10 to MSD deasserted
MSA change to MSWRB
deasserted time
MSA change to MSWRB
deasserted time
0
ADDRESS
BUS CMD
1
2
3
DATA
T7
BE#'s
n+5
T1
n+6
T3
T10
T4
n+7
T8
T2
50
14
17
16
17
14
9
4
7
8
n+8
T3
T11
T4
n+9
T6
n+10
BE#'s
T5
T9
DATA
12
19
21
13
22
19
14
22
9
n+11
27
24
19
14
17
24
27
26
18
W89C940
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