Denon DVD-2930CI User manual

Ver 2.02
Date : Jun.21.2006 1 page of 46
Copyright 2001
Specification
for
Serial Interface DVD-3930/2930
D&M Holdings Inc.
DENON Brand Company

Ver 2.02
Date : Jun.21.2006 2 page of 46
Copyright 2001
Contents
1SERIAL 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
1.10 EXTENTION COMMAND SPECIFICATION.................................................................................................................................38
1.10.1 OPEN／CLOSE ...........................................................................................................................................................38
1.10.2 NTSC／PAL.................................................................................................................................................................38
1.10.3 HDMI SELSECT .............................................................................................................................................................39
1.10.4 HDMI FORMAT .............................................................................................................................................................39
1.10.5 PROGRAM／DIRECT ................................................................................................................................................40
1.10.6 CLEAR..........................................................................................................................................................................40
1.10.7 CALL ............................................................................................................................................................................41
1.10.8 DISPLAY......................................................................................................................................................................41
1.10.9 REPEAT........................................................................................................................................................................42
1.10.10 PAGE +／－..............................................................................................................................................................42
1.10.11 RANDOM .................................................................................................................................................................43
1.10.12 MARKER ..................................................................................................................................................................43
1.10.13 ZOOM........................................................................................................................................................................44
1.10.14 DIMMER...................................................................................................................................................................44
1.10.15 PICTURE ADJUST...................................................................................................................................................45
1.10.16 PURE DIRECT..........................................................................................................................................................45
1.10.17 STATUS TRANSFER MODE ..................................................................................................................................46

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1Serial 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 ) : Even number
- Stop bit ( SP ) : 1 bit
- Transfer data : ASCII code
- Control characters : STX (02h)
ETX (03h)
ETB (17h)
NAK (15h)
ACK (06h)
ST SPb0 b1 b2 b3 b4 b5 b6 b7 P
11 / 9600 ( sec )

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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
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

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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. 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 6s, the host shall retransmit the command.

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1.5 Command / Answer sequence
Shown below are the command sequence and the answer sequence of this unit.
1) When a command is normally received ( unit ) and an answer is normally received
( host ) with an answer parameter
Comand
CC
PC
PC
PC
PC
BCC
ST
ET
ST
CC
PC
ST
Answer Transmitted
Error Check OK
Next Command
Transmitte
HOST UNIT
AC
PC
PC
PC
ET
BCC
RC
Error Check OK
MAX
40ms
MI
40µs
MAX
5s

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2) When a command is abnormally received ( with or without an answer parameter )
Command
CC
PC
PC
PC
PC
BCC
ST
ET
NAK
CC
PC
ST
NAK return
Error Check NG
Command
HOST UNIT
MAX
40ms MAX
100ms

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3) When a command with an answer parameter is normally received ( unit ) and an
answer is abnormally received ( host )
Command
CC
PC
PC
PC
PC
BCC
ST
ET
ST
NAK
Answer
Error Check OK
HOST UNIT
AC
PC
PC
PC
ET
BCC
RC
ST
Answe
Retransmitte
AC
PC
PC
RC
Error Check NG
MAX
40ms
MAX
60ms
MAX
5s

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4) When a command with an answer parameter is normally received ( unit ) and an
answer is normally received with ETB ( host )
Command
CC
PC
PC
PC
PC
BCC
ST
ET
ST
ACK
Answer
Error Check OK
HOST UNIT
AC
PC
PC
PC
ETB
BCC
RC
ST
Continuous
Transmitte
AC
PC
PC
RC
Error Check OK
MAX
40ms
PC
ET
BCC
MAX
40ms
Next command
MAX
5s
MAX
5s

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1.6 List of command codes
Here is a list of command code types.
2Xh: POWER control command
3Xh: Command related to the acquisition of player information ( such as status and
name )
4Xh~5Xh: Operation instruction command to the player
No. Command Code (ASCII) Operation
1 Power ON 20h ([SP]) Power-on request from the standby state
2 Power OFF 21h (!) Power-off request
3 Request System Status 30h (0) Acquires system status ( such as the entire player
and transfer unit ) .
4 Request CPU Version 31h (1) Acquires the CPU version.
5 Request Error Status 32h (2) Acquires the error code when an error is occurred.
6 Request Disc Status 33h (3) Disk number information is obtained.
7 Play 40h (@) Starts playback.
8 Stop 41h (A) Stops playback.
9 Pause 42h (B) Requests a pause.
10 Skip 43h (C) Moves to another group or title or chapter or track
11 Slow /Search 44h (D) Scan
12 Setup 45h (E) Common procedures of initial setting
13 Top Menu 46h (F) Playback top menu screen
14 Menu 47h (G) Playback Menu screen
15 Return 48h (H) Return
16 Audio 49h (I) Audio setting
17 Subtitle 4Ah (J) Subtitle setting
18 Angle 4Bh (K) Angle setting
19 Direct Select 4Ch (L) Music search mode
20 Cursor 4Dh (M) Moves cursor screen
21 Enter 4Eh (N) Decision
22 SACD Layer Select 4Fh (O) SACD Layer search mode
23 Disc Select 50h (P) Disc search mode
24 Disc Skip 51h (Q) Moves to another Disc

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1.7 List of answer codes
No. Status Code (ASCII) Description
1 Command OK 20h (SP) Accepts the command.
2 Invalid 30h (0) Invalid command.
3 Format Error 31h (1) Inappropriate command format.
4 Order Track None 32h (2) The track , the group ,the title or the chapter you
specified does not exist.
5 Order Time None 33h (3) The time you specified does not exist.
6 Play Error 34h (4) An error occurred during playback.
7 Communication Error 35h (5) Communication error between the parent and child unit.
1.8 List of status codes
Here is a list of answer code types.
3Xh : Status of the entire system
4Xh : Status of each action mode
No. Status Code (ASCII) Description
1 Stand-by 30h (0) Stand-by
2 Disc Loading 31h (1) Under disc loading.
3 Disc Loading Complete 32h (2) Disc Loading complete.
4 Tray Opening 33h (3) Disc tray open.
5 Tray Closing 34h (4) Disc tray close.
6 No Disc 41h (A) Disc not present
7 Stop 42h (B) Stop
8 Play 43h (C) Under disc playing.
9 Pause 44h (D) Playback in process.
10 Scan Play 45h (E) Scanning in process.
11 Slow Search Play 46h (F) Slow scanning in process.
12 Setup 47h (G) Setup mode
13 Play Back Control 48h (H) Play Back Control scannig in process
14 DVD Resume Stop 49h (I) Resume stop condition
15 DVD Menu 4Ah (J) DVD menu playback in process
16 Digital Interface Receive
Mode (DAC MODE) 4Bh (K) Under DAC Mode

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1.9 Command specification
•When this unit is set to be compatible with all commands and fails to accept a command
( due to a communication error, for example ) , it returns NAK ( 15h ) as an answer.
1.9.1 Power ON
This requests a power-on from the standby state.
byte \ bit 7 6 5 4 3 2 1 0
0 STX ( 02h )
1 Command code ( ' SP ')
2 Reserve ( 00h )
3 Reserve ( 00h )
4 Reserve ( 00h )
5 Reserve ( 00h )
6 ETX ( 03h )
7 BCCH ( high-level )
8 BCCL ( low-level )
1) Answers returned
byte \ bit 7 6 5 4 3 2 1 0
0 STX ( 02h )
1 Reply code ( ' SP ')
2 Answer code
3~16 Master player type
“DENON DVD-3900” (ASCII CODE)
17 ETX ( 03h )
18 BCCH ( high-level )
19 BCCL ( low-level )
2) Special condition
•When power condition is “STANDBY”, can accept “OPEN /CLOSE KEY”, “PLAY KEY”,
and “POWER ON KEY” on the front panel and on the IR remote controler.

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1.9.2 Power OFF
This requests a transfer from power-on to a standby state.
byte \ bit 7 6 5 4 3 2 1 0
0 STX ( 02h )
1 Command code ( ' ! ')
2 Reserve ( 00h )
3 Reserve ( 00h )
4 Reserve ( 00h )
5 Reserve ( 00h )
6 ETX ( 03h )
7 BCCH ( high-level )
8 BCCL ( low-level )
1) Answers returned
byte \ bit 7 6 5 4 3 2 1 0
0 STX ( 02h )
1 Reply code ( ' ! ')
2 Answer code
3 ETX ( 03h )
4 BCCH ( high-level )
5 BCCL ( low-level )
2) Special condition
•None.

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1.9.3 Request System Status
This status requests the DVD playing information .
byte \ bit 7 6 5 4 3 2 1 0
0 STX ( 02h )
1 Command code ( ' 0 ')
2 Reserve ( 00h )
3 Reserve ( 00h )
4 Reserve ( 00h )
5 Reserve ( 00h )
6 ETX ( 03h )
7 BCCH ( high-level )
8 BCCL ( low-level )
1) Answers returned
byte \ bit 7 6 5 4 3 2 1 0
0 STX ( 02h )
1 Reply code ( ' 0 ')
2 Answer code
3 Disc type code ( *1 )
4 Audio format code ( *2 )
5 Audio channel code ( *3 )
6 Dialog code ( *4 )
7 Subtitle code ( *5 )
8 Angle code ( *6 )
9 Status code
10 Play mode code ( *7 )
11 Group or Title number information (10 digits)
12 Group or Title number information (1 digits)
13 Track or Chapter number information (100 digits)
14 Track or Chapter number information (10 digits)
15 Track or Chapter number information (1 digits)
16 Time mode ( *8 )
17 Elapsed time (hour, 10 digits)
18 Elapsed time (hour, 1 digits)
19 Elapsed time (minutes, 10 digits)
20 Elapsed time (minutes, 1 digits)
21 Elapsed time (second, 10 digits)
22 Elapsed time (second, 1 digits)
23 ETX ( 03h )
24 BCCH ( high-level )
25 BCCL ( low-level )
(*1) Disc type code (*2) Audio format code (*3) Audio channel code (*4) Dialog
code
Code Disc Type Code Audio Format Code Audio Channel Code Dialog
31h (1) DVD VIDEO 31h (1) DOLBY DIGITAL 31h (1) 1 ch 31h (1) JPN
32h (2) DVD AUDIO 32h (2) DTS 32h (2) 2 ch 32h (2) ENG
33h (3) VCD 33h (3) MPEG 33h (3) 2.1 ch 33h (3) FRA
34h (4) CD-DA 34h (4) LPCM 34h (4) 3 ch 34h (4) DEU
35h (5) MP3 35h (5) PPCM 35h (5) 3.1 ch 35h (5) ITA
36h (6) UNKNOWN 36h (6) UNKNOWN 36h (6) 4 ch 36h (6) ESP
37h (7) SACD 37h (7) DSD 37h (7) 4.1 ch 37h (7) NLD
38h (8) 5 ch 38h (8) CHI
39h (9) 5.1 ch 39h (9) RUS
3Ah (: )
6 ch 3Ah( : ) KOR
3Bh (;)
L /R (CD/VCD/MP3)
3Bh( ; ) UNKNOWN
3Ch (<) R (CD/CD/MP3)
3Dh (=) L (CD/VCD/MP3)
3Eh (>) UNKNOWN

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(*5) Subtitle code (*6) Angle code (*7) Play mode code (*8) Time Mode code
Code Subtitle Code Angle Code Play Mode Code Time Mode
31h (1) JPN 31h (1) 1 31h (1) NORMAL 31h (1) SINGLE ELAPSED
32h (2) ENG 32h (2) 2 32h (2) PROGRAM 32h (2) SINGLE REMAIN
33h (3) FRA 33h (3) 3 33h (3) RANDOM 33h (3) TOTAL ELAPSED
34h (4) DEU 34h (4) 4 34h (4) TOTAL REMAIN
35h (5) ITA 35h (5) 5 35h (5) CHAPTER ELAPSED
36h (6) ESP 36h (6) 6 36h (6) CHAPTER REMAIN
37h (7) NLD 37h (7) 7 37h (7) TITLE ELAPSED
38h (8) CHI 38h (8) 8 38h (8) TITLE REMAIN
39h (9) RUS 39h (9) 9 39h (9) TRACK ELAPSED
3Ah ( : ) KOR 3Ah (: ) TRACK REMAIN
3Bh ( ; ) UNKNOWN 3Bh ( ; ) GROUP ELAPESD
3Ch (<) GROUP REMAIN
2) Special conditions
•When the disc does not set to DVD mechanism and disc loading process does not
finish, group number, title number, track number, and chapter number are set (' 0 ' ) .
•When the disc does not set to DVD mechanism and disc loading process does not
finish, elapsed time information are set ( ' 0 ' ) .
•When power condition is “STANDBY”, can accept “REQUEST SYSTEM STATUS”,
“POWER ON KEY”, “REQUEST CPU VERSION”, and “REQUEST ERROR STATUS”.
Incase of another command, returns “COMMAND FORMAT ERROR ( ' 1 ' ) “ in the
“ANSWER CODE”
Note : When you need these data, you should send this command .

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1.9.4 Play
The unit begins to play back the disc.
byte \ bit 7 6 5 4 3 2 1 0
0 STX ( 02h )
1 Command code ( ' @ ')
2 Reserve ( 00h )
3 Reserve ( 00h )
4 Reserve ( 00h )
5 Reserve ( 00h )
6 ETX ( 03h )
7 BCCH ( high-level )
8 BCCL ( low-level )
1) Answers returned
byte \ bit 7 6 5 4 3 2 1 0
0 STX ( 02h )
1 Reply code ( ' @ ')
2 Answer code
3 ETX ( 03h )
4 BCCH ( high-level )
5 BCCL ( low-level )
2) Special conditions
•When status code is 4Bh (DIR mode) , this command is not accepted.

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1.9.5 Stop
This stops playing back the disc.
byte \ bit 7 6 5 4 3 2 1 0
0 STX ( 02h )
1 Command code ( ' A ')
2 Reserve ( 00h )
3 Reserve ( 00h )
4 Reserve ( 00h )
5 Reserve ( 00h )
6 ETX ( 03h )
7 BCCH ( high-level )
8 BCCL ( low-level )
1) Answers returned
byte \ bit 7 6 5 4 3 2 1 0
0 STX ( 02h )
1 Reply code ( ' A ')
2 Answer code
3 ETX ( 03h )
4 BCCH ( high-level )
5 BCCL ( low-level )
2) Special conditions
•When status code is 4Bh (DIR mode) , this command is not accepted.

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1.9.6 Pause
This pauses the disc.
byte \ bit 7 6 5 4 3 2 1 0
0 STX ( 02h )
1 Command code ( ' B ')
2 Reserve ( 00h )
3 Reserve ( 00h )
4 Reserve ( 00h )
5 Reserve ( 00h )
6 ETX ( 03h )
7 BCCH ( high-level )
8 BCCL ( low-level )
1) Answers returned
byte \ bit 7 6 5 4 3 2 1 0
0 STX ( 02h )
1 Reply code ( ' B ')
2 Answer code
3 ETX ( 03h )
4 BCCH ( high-level )
5 BCCL ( low-level )
2) Special conditions
•This command is valid only when the status data is Play (E) .
•This command is valid as step mode, when the status data is Pause (F) .
•When status code is 4Bh (DIR mode) , this command is not accepted.

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1.9.7 Skip
This selects previous track or next track.
byte \ bit 7 6 5 4 3 2 1 0
0 STX ( 02h )
1 Command code ( ' C ')
2 Skip code ( Forward : ' + ' / Reverse : ' -')
3 Reserve ( 00h )
4 Reserve ( 00h )
5 Reserve ( 00h )
6 ETX ( 03h )
7 BCCH ( high-level )
8 BCCL ( low-level )
1) Answers returned
byte \ bit 7 6 5 4 3 2 1 0
0 STX ( 02h )
1 Reply code ( ' C ')
2 Answer code
3 Group number or title numbsr (10digit)
4 Group number or title numbsr (1digit)
5 Chapter or track number (100digit)
6 Chapter or track number (10digit)
7 Chapter or track number (1digit)
8 ETX ( 03h )
9 BCCH ( high-level )
10 BCCL ( low-level )
2) Special conditions
•This command is valid only , when mode status data is Play (E) or Pause (F) .
•The unit can skip to a maximum track with Forward (+) and to a minimum track
with Reverse (–) and when it goes to more than those track, the Order Track None
(2) answer code is issued.

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1.9.8 Slow /Search
This scans and plays the disc.
byte \ bit 7 6 5 4 3 2 1 0
0 STX ( 02h )
1 Command code ( ' D ')
2 Skip code ( Forward : ' + ' / Reverse : ' -')
3 Reserve ( 00h )
4 Reserve ( 00h )
5 Reserve ( 00h )
6 ETX ( 03h )
7 BCCH ( high-level )
8 BCCL ( low-level )
1) Answers returned
byte \ bit 7 6 5 4 3 2 1 0
0 STX ( 02h )
1 Reply code ( ' D ')
2 Answer code
3 Search speed
4 ETX ( 03h )
5 BCCH ( high-level )
6 BCCL ( low-level )
Search speed
Code Search Speed
31h (1) SLOW X 1 /8 (FWD)
32h (2) SLOW X 1 /6 (FWD)
33h (3) SLOW X 1 /4 (FWD)
34h (4) SLOW X 1 /2 (FWD)
35h (5) SLOW X 1 /8 (RVS)
36h (6) SLOW X 1 /6 (RVS)
37h (7) SLOW X 1 /4 (RVS)
38h (8) SLOW X 1 /2 (RVS)
39h (9) FF X 64
3Ah ( : ) FF X 32
3Bh ( ; ) FF X 16
3Ch (<) FF X 8
3Dh (=) FF X 6
3Eh (>) FF X 4
3Fh (?) FF X 2
40h (@) FR X 64
41h (A) FR X 32
42h (B) FR X 16
43h (C) FR X 8
44h (D) FR X 6
45h (E) FR X 4
46h (F) FR X 2
47h (G) NORMAL
2) Special conditions
•This command is valid only when the mode status is Play (E) or Pause (F) .
•To make the search speed what you want , it needs to send some this command.
Example : Now it 's plaing . If you make the search speed to FF X 6 , it needs to
send this command 3 times.
The operation matrix is shown as next page.
•When status code is 4Bh (DIR mode) , this command is not accepted.