參數(shù)資料
型號: MD8412B
廠商: Electronic Theatre Controls, Inc.
英文描述: LINK(IEEE 1394)
中文描述: 鏈接(1394)
文件頁數(shù): 33/114頁
文件大?。?/td> 577K
代理商: MD8412B
MD8412B
Ver 1.10
FUJIFUILM MICRODEVICES CO., LTD.
21
3-2-11 Cycle Timer Register
Index
28h
Initial value
0000 0000h
The present cycle timer value is indicated. As described below, this register is divided into three areas. When the node
employing MD8412B is of CycleMaster and a cycle start packet is being transmitted, this register value is loaded. In other-
wise case, the cycle timer value in the received cycle start packet is loaded in this register in order to update the cycle timer.
Timing to load is when the Lo byte of CycleOffset has been written.
Bit 11~0
CycleOffset
: Cycle Offset bit (RW- Initial value: 00h)
This area is used for counting up with a 24.576MHz clock. It is actuated with Modulo3072.
Bit 24
CycleCount
: Cycle Count bit (RW- Initial value: 00h)
This area is used for counting up when the CycleField register carries to count Isochronous cycles. It is actu-
ated with Modulo8000.
Bit 31~25
CycleSeconds
: Cycle Seconds bit (RW- Initial value: 00h)
This area is used for counting up when the CycleCount register carries to count seconds. It is actuated with
Modulo128.
7
6
5
4
3
2
1
0
CycleOffset
15
14
13
12
11
10
9
8
CycleCount
CycleOffset
23
22
21
20
19
18
17
16
CycleCount
31
30
29
28
27
26
25
24
CycleSeconds
CycleCount
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