Denon AVR-2803, AVR-983, AVC-2570 Control Protocol

DENON AVR/AVC control protocol

Application model : AVR-2803(AVC-2570)
Application terminal : Serial Port

Connector specification

Connector type : 3.5mm Stereo Mini Plug

( Tip: RXD , Middle Band : TXD , Base: GND)

Communication format :

Synchronous system : Tone step synchronization
Communication system : A half duplex
Communication speed : 9600bps
Character length : 8 bits
Parity control : No ne
Start bit : 1 bit
Stop bit : 1 bit
Communication procedure : Non procedural
Communication data length : 135 bytes (maximum)

Ver. 3.61

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Protocol specification

The following three data forms are defined.
COMMAND : The message sent to a system(AVR/AVC) from a controller (Touch Panel etc.)
A command to a system is given from a controller.
EVENT : The message sent to a controller (Touch Panel etc.) from a system (AVR/AVC)
The result is sent, when a system is operated directly and a state changes.
*The form of EVENT presupposes that it is the same as that of COMMAND.

**Refer to the following table for the contents of COMMAND and EVENT.
RESPONSE : The message sent to a controller (Touch Panel etc.) from a system (AVR/AVC)
If the ‘request comm and’ (COMMAND+?+CR (0x0D)) has came from a controller.
The RESPONSE should be sent within 200ms of receiving the COMMAND.
*The form of RESPONSE presupposes that it is the same as that of EVENT.

Basic specification : The command by ASCII CODE, parameter expression

*ASCII CODE which can be used is from 0x20 to 0x7F : the alphabet and the number of 0-9 , and space (0x20) , some signs ,

AND carriage return (0x0D)--- It is used only as a pause sign.

Command structure : COMMAND + PARAMETER + CR (0x0D)

COMMAND : ASCII CODE of 2 characters
ex. SI : Select Input source
MS : surround Mode Setting
MV : Master Volume setting
PW : system PoWer setting
PARAMETER : ASCII CODE ( up to 25 characters)
ex. DVD : function name
CDR/TAPE-1 : function name
THX SURROUND EX : surround mode name
SUPER STADIUM : surround mode name
*Special Parameter --- ? : for request command

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The example of a command * <CR> is the meaning of 0x0D.

SIDVD<CR> : Select Input source D VD
MSTHX SURROUND EX<CR> : surround Mode Set to THX SURROUND EX
MVUP<CR> : Master Volume UP
PWON<CR> : system PoWer ON
PWSTANDBY<CR> : system PoWer STANDBY
SI?<CR> : Request command for now playing input source >> Return RESPONSE ‘SI***<CR>’

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Others

A) COMMAND is receivable also during transmission of EVENT.
B) Since CHANNEL VOLUME changes simultaneously when the SURROUND MODE changes, the value of the channel volume of all channels

returns as EVENT.

C) CHANNEL VOLUME returns the data of ALL channels by the present SURROUND MODE also including an intact channel. In this case,

the data of an intact channel is set to "50" .

D) Since SURROUND MODE changes simultaneously when the INPUT source changes, the SURROUND MODE (and also the value of the channel

volu me of all channels , It described in B) ) returns as EVENT.

E) When SURROUND MODE is the same in between INPUT source change before and after, EVENT of SURROUND MODE and CHANNEL VOLUME

does NOT return.

F) Although EVENT of SURROUND MODE returns when the present SURROUND MODE is set up again, CHANNEL VOLUME does NOT return.
G) When SURROUND MODE is changed, before returning SURROUND MODE after change as EVENT, the present SURROUND MODE is returned.
H) The RESPONSE should be sent as opposed to the request command by all the commands with which an EVENT exists , not need to

the another request commands(ex. SV command).

I) The PARAMETER (with COMMAND and RESPONSE, EVENT) of minimum level of MASTER VOLUME and MULTI ZONE VOLUME defines "99".

(because "00" defines as -80dB.)

J) If the MASTER VOLUME & CHANNEL VOLUME set with 0.5dB step, the PARAMETER (with COMMAND and RESPONSE, EVENT) defines three

ASCII characters as bellows.

ex. MASTER VOLUME = +1.0dB : MV81<CR>
+0.5dB : MV805<CR>

0dB : MV80<CR>

-0.5dB : MV795<CR>

-1.0dB : MV79<CR>
| |

-79.5dB : MV005<CR>

-80.0dB : MV00<CR>

--- : MV99<CR>

* At the **.0dB step, only uses two ASCII characters as PARAMETER, same as usual.

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COMMAND and PARAMETER list

COMMAND PARAMETER function example
PW ON POWER ON/STANDBY change PWON<CR>
STANDBY PWSTANDBY<CR>
MV UP MASTER VOLUME UP/DOWN , direct change to ***dB MVUP<CR>
DOWN MVDOWN<CR>
** **:00 to 99 by ASCII , 80=0dB MV80<CR> *
CV FL UP CHANNEL VOLUME UP/DOWN , direct change to ***dB CVFL UP<CR>
FL DOWN ---FRONT Lch CVFL DOWN<CR>
FL ** **:38 to 62 by ASCII , 50=0dB CVFL 50<CR> *
FR UP CVFR UP<CR>
FR DOWN ---FRONT Rch CVFR DOWN<CR>
FR ** **:38 to 62 by ASCII , 50=0dB CVFR 50<CR> *
C UP CVC UP<CR>
C DOWN ---CENTERch CVC DOWN<CR>
C ** **:38 to 62 by ASCII , 50=0dB CVC 50<CR> *
SW UP CVSW UP<CR>
SW DOWN ---SUBWOOFERch CVSW DOWN<CR>
SW ** **:38 to 62 by ASCII , 50=0dB CVSW 50<CR> *
SL UP CVSL UP<CR>
SL DOWN ---SURROUND Lch CVSL DOWN<CR>
SL ** ** :38 to 62 by ASCII , 50=0dB CVSL 50<CR> *
SR UP CVSR UP<CR>
SR DOWN ---SURROUND Rch CVSR DOWN<CR>
SR ** **:38 to 62 by ASCII , 50=0dB CVSR 50<CR> *
SBL UP ---SURROUND BACK Lch (SBch 2SP) CVSBL UP<CR>
SBL DOWN CVSBL DOWN<CR>
SBL ** **:38 to 62 by ASCII , 50=0dB CVSBL 50<CR> *
SBR UP ---SURROUND BACK Rch (SBch 2SP) CVSBR UP<CR>
SBR DOWN CVSBR DOWN<CR>
SBR ** **:38 to 62 by ASCII , 50=0dB CVSBR 50<CR> *

MV , CV COMMAND : "*" parameter uses two or three ASCII characters. (see page4 J) section)

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COMMAND PARAMETER function example
CV SB UP ---SURROUND BACKch (SBch 1SP) CVSB UP<CR>
SB DOWN CVSB DOWN<CR>
SB ** **:38 to 62 by ASCII , 50=0dB CVSB 50<CR> *
MU ON OUTPUT MUTE ON/OFF change MUON<CR>
OFF MUOF F<CR>
SI PHONO Select INPUT source SIPHONO<CR>
CD SICD<CR>
TUNER SITUNER<CR>
DVD SIDVD<CR>
VDP SIVDP<CR>
TV SITV<CR>
DBS/SAT --- Select DBS function at AVR-2803 SIDBS/SAT<CR>
VCR -1 SIVCR-1<CR>
VCR -2 SIVCR-2<CR>
VCR -3 ---Invalid at AVR-2803 SIVCR-3<CR>
V.AUX SIV.AUX<CR>
CDR/TAPE1 --- Select CDR/TAPE function at AVR-2803 SICDR/TAPE1<CR>
MD/TAPE2 ---Invalid at AVR-2803 SIMD/TAPE2<CR>
ZM ON MAIN-ZONE ON/OFF change ZMON<CR>
OFF ZMOFF<CR>
Z1 PHONO MULTI ZONE-1 mode set , and select source Z1PHONO<CR>

| --- The name of PARAMETER is |
CDR/TAPE1 the same as that of the time of SI COMMAND. Z1CDR/TAPE1<CR>
SOURCE MULTI ZONE-1 mode cancel Z1SOURCE<CR>
UP MULTI ZONE-1 VOLUME UP/DOWN , direct change to ***dB Z1UP<CR>
DOWN Z1DOWN<CR>
** **:00 to 99 by ASCII , 80=0dB Z180<CR> *
ON MULTI ZONE-1 ON/OFF change Z1ON<CR>
OFF Z1OFF<CR>

---Set ZONE -2 functions at AVR-2803

CV , Z1 COMMAND : "*" parameter uses two or t hree ASCII characters. (see page4 J) section)

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COMMAND PARAMETER function example
Z2 PHONO MULTI ZONE-2 mode set , and select source Z2PHONO<CR>

| --- The name of PARAMETER is |
MD/TAPE2 the same as that of the time of SI COMMAND. Z2MD/TAPE2<CR>
SOURCE MULTI ZONE-2 mode cancel Z2SOURCE<CR>
UP MULTI ZONE-2 VOLUME UP/DOWN , direct change to ***dB Z2UP<CR>
DOWN Z2DOWN<CR>
** **:00 to 99 by ASCII , 80=0dB Z280<CR> *
ON MULTI ZONE-2 ON/OFF change Z2ON<CR>
OFF Z2OFF<CR >

---Invalid at AVR-2803
SR PHONO REC SELECT mode set , and select source SRPHONO<CR>

| --- The name of PARAMETER is |
CDR/TAPE1 the same as that of the time of SI COMMAND. SRCDR/TAPE1<CR>
SOURCE REC SELECT mode cancel SRSOURCE<CR>
SV DVD VIDEO SELECT mode set , and select source SVDVD<CR>
VDP SVVDP<CR>
TV SVTV<CR>
DBS/SAT SVDBS/SAT<CR>
VCR -1 SVVCR-1<CR>
VCR -2 SVVCR-2<CR>
VCR -3 ---Invalid at AVR-2803 SVVCR-3<CR>
V.AUX SVV.AUX<CR>
SOURCE VIDEO SELECT mode cancel SVSOURCE<CR>
SD AUTO set DIGITAL INPUT AUTO mode SDAUTO<CR>
PCM set DIGITAL INPUT force PCM mode SDPCM<CR>
DTS set DIGITAL INPUT force DTS mode SDDTS<CR>
RF --- Invalid at AVR-2803 SDRF<CR>
ANALOG set force ANALOG INPUT mode SDANALOG<CR>
EXT.IN-1 set EXT.IN-1 mode ---Set EXT.IN mode at AVR-2803 SDEXT.IN -1<CR>
EXT.IN-2 set EXT.IN-2 mode ---Invalid at AVR-2803 SDEXT.IN-2<CR>

Z2 COMMAND : "*" parameter uses two or three ASCII characters. (see page4 J) section)

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EVENT PARAMETER function example
MS DIRECT SURROUND mode set MSDIRECT<CR>
PURE DIRECT ---Invalid at AVR-2803 MSPURE DIRECT<CR>
STEREO MSSTEREO<CR>
MULTI CH IN ---Invalid at AVR-2803 MSMULTI CH IN<CR>
MULTI CH DIRECT --- Invalid at AVR-2803 MSMULTI CH DIRECT<CR>
MULTI CH PURE D ---Invalid at AVR-2803 MSMULTI CH PURE D<CR>
DOLBY PRO LOGIC All are received as "DOLBY SURROUND" , MSDOLBY PRO LOGIC<CR>
DOLBY PL2 the surround mode which changed return as EVENT. MSDOLBY PL2<CR>
DOLBY DIGITAL MSDOLBY DIGITAL<CR>
DOLBY D EX MSDOLBY D EX<CR>
DTS NEO:6 All are received as "DTS SURROUND" , MSDTS NEO:6<CR>
DTS SURROUND the surround mode which changed return as EVENT. MSDTS SURROUND<CR>
DTS ES DSCRT6.1 MSDTS ES DSCRT6.1<CR>
DTS ES MTRX6.1 MSDTS ES MTRX6.1<CR>
HOME THX CINEMA ---Invalid at AVR-2803 MSHOME THX CINEMA<CR>
THX5.1 ---Invalid at AVR-2803 MSTHX5.1<CR>
THX U2 CINEMA ---Invalid at AVR-2803 MSTHX U2 CINEMA<CR>
THX MUSIC MODE ---Invalid at AVR-2803 MSTHX MUSIC MODE<CR>
THX6.1 ---Invalid at AVR-2803 MSTHX6.1<CR>
THX SURROUND EX ---Invalid at AVR-2803 MSTHX SURROUND EX<CR>
WIDE SCREEN ---Invalid at AVR-2803 MSWIDE SCREEN<CR>
5CH STEREO Both are received as "5CH/7CH STEREO" , MS5CH STEREO<CR>
7CH STEREO the surround mode which changed return as EVENT. MS7CH STEREO<CR>
SUPER STADIUM --- Invalid at AVR-2803 MSSUPER STADIUM<CR>
ROCK ARENA MSROCK ARENA<CR>
JAZZ CLUB MSJAZZ CLUB<CR>
CLASSIC CONCERT ---Invalid at AVR-2803 MSCLASSIC CONCERT<CR>
MONO MOVIE MSMONO MOVIE<CR>
VIDEO GAME MSVIDEO GAME<CR>
MATRIX MSMATRIX<CR>
VIRTUAL MSVIRTUAL<CR>

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EVENT PARAMETER function example
PS TONE DEFEAT ON PARAMETER setting PSTONE DEFEAT ON<CR>
TONE DEFEAT OFF TONE DEFEAT ON/OFF PSTONE DEFEAT OFF<CR>
SB:MTRX ON SURROUND BACK SP MODE set PSSB:MTRX ON<CR>
SB:NON MTRX ---MTRX ON = SURR.EX ON = DSCRT ON PSSB:NON MTRX<CR>
SB:OFF (at THX mode) (at ES DSCRT mode) PSSB:OFF<CR>
CINEMA EQ.ON CINEMA EQ. ON/OFF PSCINEMA EQ.ON<CR>
CINEMA EQ.OFF PSCINEMA EQ.OFF<CR>
MODE : MUSIC CINEMA / MUSIC /PL mode change PSMODE : MUSIC<CR>
MODE : CINEMA (This parameter can change DOLBY PL2,NEO:6 mode.) PSMODE : CINEMA<CR>
MODE : EMULATION --- “EML” can change ONLY DOLBY PL2 mode. PSMODE : EMULATION<CR>
TF UP TUNER Frequency UP/DOWN , direct change TFUP<CR> *
DOWN TFDOWN<CR> *
****** (6 digits) --- ****.** kHz at AM band (>050000 is AM.)

****.** MHz at FM b and (<050000 is FM.)
TP UP TUNER PRESET CH UP/DOWN , direct change to No.** TPUP<CR>
DOWN TPDOWN<CR>
**(PRESET No.) TPA1<CR>

TM TUNER BAND , MODE Select
AM --- Band set to AM TMAM<CR>
FM --- Band set to FM TMFM<CR>
AUTO --- Tuning mode set to AUTO mode TMAUTO<CR> *
MANUAL ---Tuning mode set to MANUAL mode TMMANUAL<CR> *

TF, TP, TM COMMAND : '*' parameters can NOT operate when INPUT source isn’t TUNER.

TF105000<CR>
(1050.00kHz at AM)

(PRESET No. ”A1”)

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EVENT(or RESPONSE) and PARAMETER list

EVENT PARAMETER function example *RES.
PW ON POWER ON/STANDBY change PWON<CR>
STANDBY PWSTANDBY<CR>
MV ** MASTER VOLUME change , **:00 to 99 by ASCII MV80<CR>
98 = +18dB(MAX) MV795<CR>

80 = 0dB
00 = -80dB
99 = --- (MIN)
CV FL ** CHANNEL VOLUME change , **:38 to 62 by ASCII CVFL 50<CR>
FR ** 62 = +12dB(MAX) CVFR 50<CR>
C ** 50 = 0dB CVC 50<CR>
SW ** 38 = -12dB(MIN) CVSW 50<CR>
SL ** 00 = OFF (define ONLY SWch) CVSL 50<CR>
SR ** CVSR 50<CR>
SBL ** (at SBch 2SP) CVSBL 50<CR>
SBR ** (at SBch 2SP) CVSBR 50<CR>
SB ** (at SBch 1SP) CVSB 50<CR>
MU ON OUTPUT MUTE ON/OFF change MUON<CR>
OFF MUOFF<CR>
SI PHONO INPUT source change SIPHONO<CR>
CD SICD<CR>
TUNER SITUNER<CR>
DVD SIDVD<CR>
VDP SIVDP<CR>
TV SITV<CR>
DBS/SAT --- Select DBS function at AVR-2803 SIDBS/SAT<CR>
VCR -1 SIVCR-1<CR>
VCR -2 SIVCR-2<CR>
VCR -3 ---Invalid at AVR-2803 SIVCR-3<CR>
V.AUX SIV.AUX<CR>
CDR/TAPE1 --- Select CDR/TAPE function at AVR-2803 SICDR/TAPE1<CR>
MD/TAPE2 ---Invalid at AVR-2803 SIMD/TAPE2<CR>

The PARAMETER of MV, CV EVENT : Uses two or three ASCII characters. (see page4 J) section)
*RES. : NOT returns '*' parameters as RESPONSE.

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EVENT PARAMETER function example *RES.
ZM ON MAIN-ZONE ON/OFF change ZMON<CR>
OFF ZMOFF<CR>
Z1 PHONO MULTI ZONE-1 source change Z1PHONO<CR>
| --- The name of PARAMETER is |

CDR/TAPE1 the same as that of the time of SI COMMAND. Z1CDR/TAPE1<CR>
SOURCE MULTI ZONE-1 mode cancel Z1SOURCE<CR>
** MULTI ZONE-1 VOLUME change , **:00 to 99 by ASCII Z180<CR>

98 = +18dB(MAX)
80 = 0dB
10 = -70dB
99 = ---(MIN)
ON MULTI ZONE-1 ON/OFF change Z1ON<CR>
OFF Z1OFF<CR>

---means MULTI ZONE functions at AVR -2803
Z2 PHONO MULTI ZONE-2 source change Z2PHONO<CR>
| --- The name of PARAMETER is |
CDR/TAPE1 the same as that of the time of SI COMMAND. Z2CDR/TAPE1<CR>
SOURCE MULTI ZONE-2 mode cancel Z2SOURCE<CR>
** MULTI ZONE-2 VOLUME change , **:00 to 99 by ASCII Z280<CR>
98 = +18dB(MAX)
80 = 0dB
10 = -70dB
99 = ---(MIN)
ON MULTI ZONE-2 ON/OFF change Z2ON<CR>
OFF Z2OFF<CR>

---Invalid at AVR-2803
SR PHONO REC SELECT source change SRPHONO<CR>

| --- The name of PARAMETER is |
CDR/TAPE1 the same as that of the time of SI COMMAND. SRCDR/TAPE1<CR>
SOURCE REC SELECT mode cancel SRSOURCE<CR>

The PARAMETER of Z1, Z2 EVENT : Uses two or three ASCII characters. (see page4 J) section)

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EVENT PARAMETER function example *RES.
TF ****** (6 digits) TUNER Frequency chan ge TF105000<CR>

--- ****.** kHz at AM band (1050.00kHz at AM)
****.** MHz at FM band
TP **(PRESET No.) TUNER PRESET change to No.** TPA1<CR>
(PRESET No.”A1”)
TM TUNER BAND , MODE change
AM --- Band set to AM TMAM<CR>
FM --- Band set to FM TMFM<CR>
AUTO --- Tuning mode set to AUTO mode TMAUTO<CR>
MANUAL ---Tuning mode set to MANUAL mode TMMANUAL<CR>

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EVENT PARAMETER function example *RES.
MS DIRECT SURROUND mode change MSDIRECT<CR>
PURE DIRECT ---Invalid at AVR-2803 MSPURE DIRECT<CR>
STEREO MSSTEREO<CR>
MULTI CH IN ---Invalid at AVR-2803 MSMULTI CH IN<CR>
MULTI CH DIRECT --- Invalid at AVR-2803 MSMULTI CH DIRECT<CR>
MULTI CH PURE D ---Invalid at AVR-2803 MSMULTI CH PURE D<CR>
DOLBY PRO LOGIC MSDOLBY PRO LOGIC<CR>
DOLBY PL2 MSDOLBY PL2<CR>
DOLBY DIGITAL MSDOLBY DIGITAL<CR>
DOLBY D EX MSDOLBY D EX<CR>
DTS NEO:6 MSDTS NEO:6<CR>
DTS SURROUND MSDTS SURROUND<CR>
DTS ES DSCRT6.1 MSDTS ES DSCRT6.1<CR>
DTS ES MTRX6.1 MSDTS ES MTRX6.1<CR>
HOME THX CINEMA ---Invalid at AVR-2803 MSHOME THX CINEMA<CR>
THX5.1 ---Invalid at AVR-2803 MSTHX5.1<CR>
THX U2 CINEMA ---Invalid at AVR-2803 MSTHX U2 CINEMA<CR>
THX MUSIC MODE ---Invalid at AVR-2803 MSTHX MUSIC MODE<CR>
THX6.1 ---Invalid at AVR-2803 MSTHX6.1<CR>
THX SURROUND EX ---Invalid at AVR-2803 MSTHX SURROUND EX<CR>
WIDE SCREEN ---Invalid at AVR-2803 MSWIDE SCREEN<CR>
5CH STEREO MS5CH STEREO<CR>
7CH STEREO MS7CH STEREO<CR>
SUPER STADIUM ---Invalid at AVR-2803 MSSUPER STADIUM<CR>
ROCK ARENA MSROCK ARENA<CR>
JAZZ CLUB MSJAZZ CLUB<CR>
CLASSIC CONCERT ---Invalid at AVR-2803 MSCLASSIC CONCERT<CR>
MONO MOVIE MSMONO MOVIE<CR>
MATRIX MSMATRIX<CR>
VIRTUAL MSVIRTUAL<CR>

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