Protocol Document

INTER-M Remote Control Protocol – CD Player(061012) 6/6
4) STAT CD3 – Track Info under Bit
Playing CD track No., Selected Track No., Total Track no.’s under bit
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
1CDTRL7~0
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Bottom Byte for Showing 0~999
When CD is status of “PLAY”
- Inform Track No Value
When CD is status of “STOP”
- Inform Total Track No Value
When CD is status of “ Select”
- Inform Selected No
2.3 CHECKSUM Definition
1) Calculation Range: All code value, except for CHK
2) Calculation: add(+) all Code value of the range .
3) Ex) To Calculate “Checksum” When External controller send “Power on” protocol to CD-
610
A. Code Value
1 BYTE 2 BYTE 3 BYTE 4 BYTE 5 BYTE
STX LEN DVID DATA CHK
0xFE 0x03 0x10 0x01
0x12
B. Calculation Method
Operator: “ + ”
checksum = STX + LEN + DVID + DATA
= 0xFE + 0x03 + 0x10 + 0x01
= 0x12