A-8
04/18/00
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Appendix A
PI7C7100
3-Port PCI Bridge
ADVANCE INFORMATION
Addr
Data
Addr
Data
Byte Enables
Byte Enables
6
6
6
Addr
Byte Enables
Figure 12. Downstream Delayed Memory Read Transaction (S2/33MHz-->S1/33MHz)
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
S_CLKOUT[0]
S1_AD [31:0]
S1_CBE [3:0]
S1_FRAME_L
S1_IRDY_L
S1_TRDY_L
S1_STOP_L
S1_DEVSEL_L
S_CLKOUT[0]
S2_AD[31:0]
S2_CBE[3:0]
S2_FRAME_L
S2_IRDY_L
S2_TRDY_L
S2_STOP_L
S2_DEVSEL_L
S2_GNT_L
S2_REQ_L
S1_GNT_L
S1_REQ_L
23
23
Addr
Data
Addr
Data
Byte Enables
Byte Enables
6
6
6
Addr
Byte Enables
Figure 13. Downstream Delayed Memory Read Transaction (S1/33MHz-->S2/33MHz)
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
S_CLKOUT[0]
S2_AD [31:0]
S2_CBE [3:0]
S2_FRAME_L
S2_IRDY_L
S2_TRDY_L
S2_STOP_L
S2_DEVSEL_L
S_CLKOUT[0]
S1_AD[31:0]
S1_CBE[3:0]
S1_FRAME_L
S1_IRDY_L
S1_TRDY_L
S1_STOP_L
S1_DEVSEL_L
S1_GNT_L
S1_REQ_L
S2_GNT_L
S2_REQ_L
23
23