參數(shù)資料
型號(hào): 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): 49/114頁
文件大小: 577K
代理商: MD8412B
MD8412B
Ver 1.10
FUJIFUILM MICRODEVICES CO., LTD.
37
destinationOffset
: destination Offset Address field
This field is used to define the lower 48-bit address of the destination node for the requested packet. The set-
ting value need be defined in the quadlet unit in the case of a read request for quadlet data and a write request
for quadlet data.)
quadletData
: quadlet data field
This field is used to set up actual transfer data (1 Quadlet).
4-1-2
Block Transmit
BusID
: Bus ID Field
This field is used to select the BusID that has been set in the source area of the header area in the IEEE1394
packet format, in order to determine whether register setting of the MD8412B should be made valid or 3FF
fixed.
0
= BusID is selected to make the set value valid in the MD8412B register.
1
= BusID is made 3FF fixed.
When this bit is set at 1, the BusID register setting becomes invalid in the MD8412B.
spd
: speed field
This field is used to designate the transfer speed. Refer to Table 4-6-6 regarding setting values.
tLabel
: Transaction label field
This field is used to define a unique tag for each transferred transaction. The tLabel sent for requesting is
used as a transaction label for correct response. The values used are valid in the range of 0h~FFf.
rt
: retry field
This field is used to define whether this packet is in the middle of making a retry. The retry protocol is fol-
lowed by the destination node. Refer to Table 4-6-1 regarding setting values.
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9
8
7
6
5
4
3
2
1
0
B
spd
tLabel
rt
tCode
priority
destinationID
destinationOffset_H
destinationOffset_L
dataLength
extended_tCode
block data quadlet 1
other block data quadlets
padding (if nacessary)
Table 4-1-2 Block Transmit format (Asynchronous)
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