
3-10
Computer Group Literature Center Web Site
Functional Description
3
PPC Bus Latency
The following tables list the latency of PPC originated transactions and the
bandwidth of originated transactions for five different clock ratios: 5:2,
3:2, 3:1, 2:1, and 1:1. The MVME2400 uses a 3:1 clock ratio:
Table 3-5. PPC60x Originated Latency Matrix
Transaction
32-bit PCI
64-bit PCI
Clock
Ratio
Beat
1
Beat
2
Beat
3
Beat
4
Total
Beat
1
Beat
2
Beat
3
Beat
4
Total
Burst Read
40
1
1
1
43
29
1
1
1
32
5:2
Burst Write
5
1
1
1
8
5
1
1
1
8
Single Read
22
-
-
-
22
-
-
-
-
-
Single Write
5
-
-
-
5
-
-
-
-
-
Burst Read
26
1
1
1
29
20
1
1
1
23
3:2
Burst Write
5
1
1
1
8
5
1
1
1
8
Single Read
16
-
-
-
16
-
-
-
-
-
Single Write
5
-
-
-
5
-
-
-
-
-
Burst Read
45
1
1
1
48
33
1
1
1
36
3:1
Burst Write
5
1
1
1
8
5
1
1
1
8
Single Read
24
-
-
-
24
-
-
-
-
-
Single Write
5
-
-
-
5
-
-
-
-
-
Burst Read
33
1
1
1
36
25
1
1
1
28
2:1
Burst Write
5
1
1
1
8
5
1
1
1
8
Single Read
19
-
-
-
19
-
-
-
-
-
Single Write
5
-
-
-
5
-
-
-
-
-
Burst Read
20
1
1
1
23
16
1
1
1
19
1:1
Burst Write
5
1
1
1
8
5
1
1
1
8
Single Read
13
-
-
-
13
-
-
-
-
-
Single Write
5
-
-
-
5
-
-
-
-
-
Содержание MVME2401-1
Страница 1: ...MVME2400 Series Single Board Computer Installation and Use V2400A IH1 ...
Страница 8: ......
Страница 14: ...xiv ...
Страница 16: ...xvi ...
Страница 78: ...3 30 Computer Group Literature Center Web Site Functional Description 3 ...
Страница 90: ...4 12 Computer Group Literature Center Web Site Programming the MVME240x 4 ...
Страница 126: ...Related Specifications A 8 Computer Group Literature Center Web Site A ...
Страница 168: ...Glossary GL 14 Computer Group Literature Center Web Site G L O S S A R Y ...
Страница 176: ...Index IN 8 Computer Group Literature Center Web Site I N D E X ...
Страница 178: ......