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): 23/114頁
文件大?。?/td> 577K
代理商: MD8412B
MD8412B
Ver 1.10
FUJIFUILM MICRODEVICES CO., LTD.
11
3-2-3
Node Identification Register
Index
08h
Initial value
0000 FFFFh
Bit 5~0
NodeNumber
: Node Number bit (RW- Initial value: 3Fh)
This value is used to set up a 6-bit node number to be defined in the IEEE1212 space. During transmission,
this value is used in the source area of the IEEE P1394 packet format header. When receiving a packet, the des-
tination node number of this packet is examined and when found to coincide with this value, the packet is
received. It is rejected in otherwise case.
Usually, the node number is read from the PHY chip and setting is made at this register after the completion
of bus reset and end of self-identification phase.
Bit 15~6
BusNumber
: Bus Number bit (RW- Initial value: 3FFh)
This value is used to set up a 10-bit bus number to be defined in the IEEE1212 space. During transmission,
this value is used in the source area of the header area in the IEEE P1394 packet format header. During recep-
tion, this BusNumber bit is disregarded.
Bit 31
IDValid
: ID Valid bit (RW- Initial value: 00b)
= Only the packet (broadcast packet) is received, where the value of NodeNumber is addressed as
"
3Fh
"
In other cases, the packet is rejected.
= Only the packet is received, for which the value of NodeNumber is addressed in the IEEE1212
address space set by the above-mentioned register. A broadcast packet is also received.
When the state of bus reset arises, this register is automatically cleared to
"
0
"
The node number is generally
determined after the completion of bus reset and end of self-identification phase. Accordingly, this value is set
up after the host has set it in the NodeNumber register.
0
1
7
6
5
4
3
2
1
0
BusNumber-L
NodeNumber
15
14
13
12
11
10
9
8
BusNumber-H
23
22
21
20
19
18
17
16
31
30
29
28
27
26
25
24
IDValid
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