Gigabit Sistems JP2pro_rev.S Instruction Manual page 20

Solid-state hdtv recorder
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CMD 1: CMD 1 assigns the command to the following main function groups that
serve to define the function, and the transfer direction of the data words that
follows.
CMD 1
0
System control
1
System control-Return message
2
Recorder control
4
Setup and selection control
8
Data request
7
Data request-Return message
Data count: Defines the number of data words that are inserted after CMD2
(0x0-0xF).
CMD 2: Is the specific command to the recorder or the command return
message from the recorder, respectively.
DATA: The number of data words and their contents are defined by the CMD2
command.
CHECKSUM: The sum of the data (D0-D7) contained in each data word, from
CDM 1/DATA COUNT to the last data word before the checksum.
Function
19
Transfer Direction
Controller---Recorder

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