Sony cis200 Manual Do Utilizador

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Responses to Request A1 Data
After initiating Command Number 2 (Request A1 Data) an ‘ACK’ or ‘NACK’ response
must be received before initiating next command.
Receive Data NACK (busy)
1 Byte: Response
<FEH> Command received. A1 data      
NOT
     sent
02H
80H
A0H
02H
FEH
TX
RX
21H
AMP
VOLUME
POSITION REQ
Command
Sent NACK 
02H
80H
A0H
02H
FDH
TX
RX
21H
AMP
Command
Sent ACK 
VOLUME
POSITION REQ
A0H
AMP
7AH
VOLUME
POSITION DATA