Denon DCM 390 Serial Protocol - Page 34

A-B command, Command format, Table 51. A-B command, Answer format, Table 52. A-B answer,

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Revision1.40 Date 24.May.'07 DCM390 Serial Interface Specification 34 page of 40 2.6.16 A-B command This command designates a point, B point in an A-B point designated repeating function. (CD) 1) Command format Byte/bit 7 6 5 4 3 2 1 0 0 STX (0x02) 1 Command code ('I') 2 A-B Code (A-B OFF: '0', A-set: '1', B-Set: '2') 3 Reserve (0x00) 4 Reserve (0x00) 5 Reserve (0x00) 6 ETX (0x03) 7 BCCH (high-level) 8 BCCL (low-level) Table 51. A-B command 2) Answer format Byte/bit 7 6 5 4 3 2 1 0 0 STX (0x02) 1 Reply code ('I') 2 Answer code 3 ETX (0x03) 4 BCCH (high-level) 5 BCCL (low-level) Table 52. A-B answer 3) Special condition As for this command, information condition changes by the condition of a/the main body. 1. A device 'receives only A-Set' condition at the time of ' A-B off'. 2. A device 'receives only B-Set' and' A-B off' condition at the time of ' A-Set'. 3. A device ' receives only A-B off' condition at the time of ' A-B Set'. D&M

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Revision1.40
DCM390 Serial Interface Specification
Date 24.May.’07
34 page of 40
2.6.16 A-B command
This command designates a point, B point in an A-B point designated repeating function. (CD)
1) Command format
Byte/bit
7
6
5
4
3
2
1
0
0
STX (0x02)
1
Command code (‘I’)
2
A-B Code (A-B OFF: ‘0’, A-set: ‘1’, B-Set: ‘2’)
3
Reserve (0x00)
4
Reserve (0x00)
5
Reserve (0x00)
6
ETX (0x03)
7
BCCH (high-level)
8
BCCL (low-level)
Table 51. A-B command
2) Answer format
Byte/bit
7
6
5
4
3
2
1
0
0
STX (0x02)
1
Reply code (‘I’)
2
Answer code
3
ETX (0x03)
4
BCCH (high-level)
5
BCCL (low-level)
Table 52. A-B answer
3) Special condition
As for this command, information condition changes by the condition of a/the main body.
1. A device ‘receives only A-Set' condition at the time of ' A-B off'.
2. A device ‘receives only B-Set' and' A-B off' condition at the time of ' A-Set'.
3. A device ' receives only A-B off' condition at the time of ' A-B Set'.