Denon DVD-1940CI User manual

Ver 2.02v2
Date : Nov.29.2005, Nov.14.2007 1 page of 46
Copyright 2005 DENON Co.,Ltd.
Specification
for
Serial Interface DVD-1940CI
Rev. Date N Name Remarks
2.00 21.Nov.2005 M.Uehara First Issue
2.01 29.Nov.2005 M.Uehara Delete ACK, Modify Disc type code,
2.02 5.Dec.2005 M.Uehara Delete Some value of “Answer codes”
CONFIDENTIAL

Ver 2.02
Date : Nov.29.2005 2 page of 46
Copyright 2005 DENON Co.,Ltd.
Contents
1 SERIAL COMMUNICATION INTERFACE ................................................................................................3
1.1 PHYSICAL INTERFACE ............................................................................................................................................ 3
1.2 TRANSFER FORMAT OF SERIAL DATA .................................................................................................................. 3
1.3 COMMAND FORMAT AND ANSWER FORMAT......................................................................................................... 4
1.4 PROTOCOL FOR DATA TRANSMISSION AND RECEPTION..................................................................................... 4
1.4.1 Basic procedure................................................................................................................................................ 4
1.4.2 Communication errors .................................................................................................................................... 5
1.5 COMMAND / ANSWER SEQUENCE ........................................................................................................................ 6
1.6 LIST OF COMMAND CODES .................................................................................................................................. 10
1.7 LIST OF ANSWER CODES ..................................................................................................................................... 11
1.8 LIST OF STATUS CODES....................................................................................................................................... 11
1.9 COMMAND SPECIFICATION................................................................................................................................... 12
1.9.1 Power ON ....................................................................................................................................................... 12
1.9.2 Power OFF ..................................................................................................................................................... 13
1.9.3 Request System Status ................................................................................................................................ 14
1.9.4 Play .................................................................................................................................................................. 16
1.9.5 Stop .................................................................................................................................................................. 17
1.9.6 Pause................................................................................................................................................................ 18
1.9.7 Skip.................................................................................................................................................................. 19
1.9.8 Slow /Search.................................................................................................................................................... 20
1.9.9 Setup................................................................................................................................................................ 22
1.9.10 Top Menu .................................................................................................................................................... 23
1.9.11 Menu............................................................................................................................................................. 24
1.9.12 Return........................................................................................................................................................... 25
1.9.13 Audio............................................................................................................................................................. 26
1.9.14 Subtitle ......................................................................................................................................................... 27
1.9.15 Angle............................................................................................................................................................. 28
1.9.16 Direct Select................................................................................................................................................ 29
1.9.17 Cursor........................................................................................................................................................... 30
1.9.18 Enter............................................................................................................................................................. 31
1.9.19 SACD Layer Selsect .................................................................................................................................... 32
1.9.20 Disc Select .................................................................................................................................................... 33
1.9.21 Disc Skip....................................................................................................................................................... 34
1.9.22 Request CPU Version................................................................................................................................ 35
1.9.23 Request Error status................................................................................................................................. 36
1.9.24 Request Disc status..................................................................................................................................... 37
CONFIDENTIAL

Ver 2.01
Date : Nov.29.2005 3 page of 46
Copyright 2005 DENON Co.,Ltd.
1 Serial communication interface
1.1 Physical interface
Arrangement of connector signals
RS-232C
Terminal # Signal I /O
1 GND -
2 TxD O
3 RxD I
4 NC -
5 S.GROUND -
6 NC -
7 NC -
8 NC -
9 NC -
1.2 Transfer format of serial data
- Interface : As per RS-232C or RS-422A
- Communication system : Half-duplex communication
- Data transfer mode : Start stop synchronization
- Transfer rate : 9,600bps
- Start bit ( ST ) : 1 bit
- Data bit ( b0-b7 ) : 8 bits
- Parity ( P ) : None
- Stop bit ( SP ) : 1 bit
- Transfer data : ASCII code
- Control characters : STX (02h)
ETX (03h)
ETB (17h)
NAK (15h)
ST SPb0 b1 b2 b3 b4 b5 b6 b7 P
11 / 9600 ( sec )
CONFIDENTIAL

Ver 2.01
Date : Nov.29.2005 4 page of 46
Copyright 2005 DENON Co.,Ltd.
1.3 Command format and answer format
This unit shall be based on commands each of which consists of a data row ( some commands
are without a PC ) composed of command codes ( CC ) and parameter codes ( PC ) . The
trans-mitting station shall be designed to send block check characters ( BCC ) following ETX,
with the data row enclosed in STX ( text start : 02h ) and ETX ( text termination : 03h ) .
The receiving station shall regard receipt of BCC as the completion of command reception when
it has received STX.
Here are the formats.
Commands : <STX> <CC> <PC0> <PC1> <PC2> <---------> <PCn> <ETX> <BCCH>
<BCCL>
STX (Start of TeXt) : 02h
CC (Command Code) : Command code
PC (Parameter Code) : Defined for each command
( contents and number of parameters )
ETX (End of TeXt) : 03h
BCC (Block Check Character) :
CC + PC0 + PC1 + PC2 + --------------- + PCn + ETX = XYh
(Each of X and Y is 4 bit long ) X , Y=0,1,2,3,4,5,6,7,8,9,A,B,C,D,E,F
BCCH ( high-level byte ) = X as converted to an ASCII code
BCCL ( low-level byte ) = Y as converted to an ASCII
code
Answers : <STX> <RC> <AC> <PC0> <PC1> <PC2> <--------> <PCn> <ETX> <BCCH>
<BCCL>
STX (Start of TeXt) : 02h
RC (Reply Code) : Reply code (=Command code)
AC (Answer Code) : Answer code
PC (Parameter Code) : Defined for each command
( contents and number of parameters )
ETX (End of TeXt) : 03h
BCC (Block Check Character) :
RC +AC + PC0 + PC1 + PC2 + ------------- + PCn + ETX = XYh
(Each of X and Y is 4 bit long) X ,
Y=0,1,2,3,4,5,6,7,8,9,A,B,C,D,E,F
BCCH ( high-level byte ) = X as converted to an ASCII code
BCCL ( low-level byte ) = Y as converted to an ASCII
code
1.4 Protocol for data transmission and reception
This unit is based on half-duplex communication. The unit shall therefore transmit commands
and receive answers according to the following procedure.
1.4.1 Basic procedure
1) The host shall select commands for this unit and transmit them to this unit. Command
interval time is MIN 40µsec.
2) Having issued a command, the host shall receive an answer from this unit, then issue
the next command.
3) The host shall analyze the RC, AC, and PC as answers given and decide whether the
CONFIDENTIAL

Ver 2.01
Date : Nov.29.2005 5 page of 46
Copyright 2005 DENON Co.,Ltd.
command has been normally executed.
4) The host shall give an answer to a command that gives operational instructions, then
issue a status request command, and decide whether this unit has finished operating with
regard to the command that gives operational instructions.
5) The time from the start of command transmission to the end of command transmission
should be max 40 msec.
6) The time from the completion of command transmission to the start of answer-back is
MAX.60 m 5sec.
7) This unit cannot receive any commands for about 5 seconds after the power switch is
turnied on.
1.4.2 Communication errors
1) Having received a command, which results in a communication error ( overrun, framing,
or parity error ) , this unit shall give NAK ( 15h ) . ( MAX 80ms from the start of
command transmission )
2) If the host has received NAK from this unit, it shall retransmit the command that it has
transmitted immediately beforehand.
3) Having received an answer, which results in a communication error ( overrun, framing,
or parity error ) , the host shall respond with NAK.
4) If it has received NAK from the host, this unit shall retransmit the answer it has
transmitted immediately beforehand. ( MAX 40ms)
5) When there is no answer from the unit within 80 m 6s, the host shall retransmit the
command.
CONFIDENTIAL