Marantz SR7400 User manual

SR7400/8400 : Rev00
Marantz
RS232C Control Specification
for
SR7400/8400
Category : AV. Receiver
Document Version : 1.00
Date : 11/22/2003
Number of Page : 17

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SR7400/8400 Document Version [1.00]
Table of Contents
1. Introduction ............................................................................................................................................................ 3
1-1. Purpose ............................................................................................................................................................ 3
1-2. Scope................................................................................................................................................................ 3
1-3. Abbreviations ................................................................................................................................................... 3
1-4. References....................................................................................................................................................... 3
2. Global Description ................................................................................................................................................ 3
2-1. Overview........................................................................................................................................................... 3
2-2. Block Diagram.................................................................................................................................................. 3
2-3. Interface connecter specification of This Product .......................................................................................... 3
2-4. Assumptions and Dependencies.................................................................................................................... 3
3. Detailed Description.............................................................................................................................................. 4
3-1. Connection format ........................................................................................................................................... 4
3-1-1. Physical connection................................................................................................................................. 4
3-1-1-1. Data transmission sequence from Host to Slave .......................................................................... 4
3-1-1-2. Data transmission sequence from Slave to Host .......................................................................... 4
3-2. Transmission data format................................................................................................................................ 5
3-2-1. Transmission data format from Host to Slave........................................................................................ 5
3-2-1-1. Form1: Command ........................................................................................................................... 5
3-2-1-2. Form2: Status request..................................................................................................................... 5
3-2-2. Transmission data format from Slave to Host........................................................................................ 5
3-2-2-1. Form1: ACK/NAK ............................................................................................................................ 5
3-2-2-2. Form2: Status answer ..................................................................................................................... 5
3-3. The transaction sequences and the regulations............................................................................................ 6
3-3-1. The transaction sequences..................................................................................................................... 6
3-3-2. The transaction regulations..................................................................................................................... 6
3-3-3. Example of the transactions.................................................................................................................... 6
3-3-4. Examples of the handshaking flowchart ................................................................................................ 7
3-3-4-1. Example of successful handshaking.............................................................................................. 7
3-3-4-2. Example of error handshaking........................................................................................................ 7
3-4. Command list ................................................................................................................................................... 8
3-4-1. Normal Command list.............................................................................................................................. 8
3-5. Status request and Status answer list...........................................................................................................13
3-5-1. Normal Status request and Status answer list .....................................................................................13
4. Revision history................................................................................................................................................... 17

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SR7400/8400 Document Version [1.00]
1. Introduction
1-1. Purpose
This document was written in order to clarify specification for control this product by the host controller.
1-2. Scope
This document would be using by software or hardware engineers for production of this product.
This product is [marantz SR6400/SR5400]. (It’s refered to as “This product” after this.)
1-3. Abbreviations
Abbreviation Description
1-4. References
2. Global Description
2-1. Overview
A Host controller can control or watch out This product as a Slave very easily via the communication cable.
2-2. Block Diagram
2-3. Interface connecter specification of This Product
Processor Interface Signal name Connection device D-Sub Pin Connecter
- N.C. - 1
TxD (output) 2UAR
T
RxD (input)
RS232C Level shift driver
3
- N.C. 4
- GND 5
- N.C.
-
6
CTS (input) 7GENERAL POR
T
RTS (output)
RS232C Level shift driver
8
- N.C. - 9
RS232C
D-SUB
(9pin,male)
2-4. Assumptions and Dependencies
HOST
(Controller)
SLAVE
(This product)
RS232C cable (straight)
Connector
D-SUB (9pin, male)

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3. Detailed Description
The interface specification between This product and a Host controller is described below.
3-1. Connection format
3-1-1. Physical connection
Host (Controller) Slave (This product)
(Serialsetting<RS232Cbasic>)
Baud Rate : 9600bps
DataBits :8bit
Parity :None
Stopbit :1bit
Handshaking :(RTS/CTS)
3-1-1-1. Data transmission sequence from Host to Slave
Host (Controller) Slave (This product)
RTS → CTS
CTS ← RTS
TxD → RxD
RxD ← TxD
1. The host checks that CTS is High, then starts a data transmission from TxD.
2. The host performs the data transmission of the number of required bytes, and ends a transmission.
* The host can do RTS to Low during the transmission for disable data transmission from a slave.
3-1-1-2. Data transmission sequence from Slave to Host
Host (Controller) Slave (This product)
RTS → CTS
CTS ← RTS
TxD → RxD
RxD ← TxD
1. The slave checks that CTS is High, then starts a data transmission from TxD.
2. The slave performs the data transmission of the number of required bytes, and ends a transmission.
* The slave can do RTS to Low during the transmission for disable data transmission from a host.
RTS
CTS
TxD
RxD
GND
CTS
RTS
RxD
TxD
GND

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3-2. Transmission data format
3-2-1. Transmission data format from Host to Slave
There are two kinds of transmission data form from Host shown below.
3-2-1-1. Form1: Command
Command is a data that requests some status change.
Start character : ’@’
ID : ‘0’ ~ ‘9’ (A Slave has own ID, A Host has to set the ID.)
COMMAND : see “Command list”
End character : 0Dh
End
0Dh
COMMAND Start
‘@’
ID
3-2-1-2. Form2: Status request
Status request is a data that requests a answer of some status.
Start character : ’@’
ID : ‘0’ ~ ‘9’ (A Slave has own ID, A Host has to set the ID.)
Request character : ‘?’
Request status : see “Status request list”
End character : 0Dh
End
0Dh
Request status
Start
‘@’
‘?’
ID
3-2-2. Transmission data format from Slave to Host
There are two kinds of transmission data form from Slave shown below.
3-2-2-1. Form1: ACK/NAK
ACK is a reply data from Slave when Slave got an acceptable command data from Host.
ACK : 06h
NAK is a reply data from Slave when Slave got an incorrect Command data, Status request data or
some other data from Host.
NAK : 15h
3-2-2-2. Form2: Status answer
Status answers are reply data when Slave got an acceptable Request status data from Host.
Start character : ’@’
ID : ‘0’ ~ ‘9’ (A Slave will set own ID.)
Answer character : see “Status answer list”
End character : 0Dh
End
0Dh
Status answer Start
‘@’
ID
ACK
06h
NAK
15h

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3-3. The transaction sequences and the regulations
3-3-1. The transaction sequences
The transactions have two kinds of sequence.
*A transaction is a Command from Host then the Slave will be an answer by ACK or NAK.
*A transaction is a Status request from Host then the Slave will be an answer by Status answer.
3-3-2. The transaction regulations
The transactions have some kinds of regulation.
* A Command or a Status request transmission by the Host has to finish within one second.
* An answer (ACK, NAK or Status answer) transmittion by the Slave has to finish within one second
when got a Command or a Status request from the Host.
* The Host must not transmit an another Command or Status request until "it receives a answer by a
previous Command or Status request" or "it passes one second from a finishing of previous transmission
of a Command or a Status request ".
3-3-3. Example of the transactions
<Host> <Slave>
RTS CTS
CTS RTS
TxD RxD
RxD TxD
Example of the transactions
max. 1sec
Max. 1sec
a transaction a transaction
Command
ACK/NAK
Status request
Status answer
max. 1sec
max. 1sec

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3-3-4. Examples of the handshaking flowchart
3-3-4-1. Example of successful handshaking
SLAVEHOST
Com m and
acce
p
table
Request
acce
p
table
Com m and
ACK
Status
request
Status
answer
3-3-4-2. Example of error handshaking
SLAVEHOST
Com m and
in c o rre c t
Request
incorrect
Com m and
NAK
Status
request
NAK

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3-4. Command list
3-4-1. Normal Command list
(Samples indicated the ID set to as ‘1’.)
Command Character Sample
POWER ON AA "@1AA”,0x0D
POWER OFF AB "@1AB",0x0D
POWER
POWER(Toggle) AC "@1AC",0x0D
DSS CA "@1CA",0x0D
TV CB "@1CB",0x0D
DVD CD "@1CD",0x0D
VCR1 CE "@1CE",0x0D
AUX1 CG "@1CG",0x0D
AUX2 CH "@1CH”,0x0D
CD CJ "@1CJ",0x0D
TAPE CK "@1CK",0x0D
CD-R CL "@1CL",0x0D
FM CN "@1CN",0x0D
AM(MW) CO "@1CO”,0x0D
INPUT SELECT
TUNER CQ "@1CQ",0x0D
MULTI-CHANNEL INPUT ON CS "@1CS",0x0D
MULTI-CHANNEL MULTI-CHANNEL INPUT OFF CT "@1CT,0x0D
A/D DIG AUTO DA "@1DA",0x0D
A/D DIG FIX DB "@1DB",0x0D
INPUT SIGNAL
A/D ANA DC "@1DC",0x0D
VOLUME UP EA "@1EA",0x0D
VOLUME DOWN EB "@1EB",0x0D
VOLMUE UP FAST EC "@1EC",0x0D
VOLUME
VOLUME DOWN FAST ED "@1ED",0x0D
BASS UP FA "@1FA",0x0D
BASS DOWN FB "@1FB",0x0D
TREBLE UP FC "@1FC",0x0D
TONE
TREBLE DOWN FD "@1FD",0x0D
MUTE OFF GA "@1GA",0x0D
AUDIO MUTE MUTE ON GB "@1GB",0x0D
VIDEO MUTE OFF HA "@1HA",0x0D
VIDEO MUTE VIDEO MUTE ON HB "@1HB",0x0D
ATT OFF IA "@1IA",0x0D
ATT ATT ON IB "@1IB",0x0D
SPEAKER A OFF SPEAKER A OFF JA "@1JA",0x0D
SPEAKER A ON SPEAKER A ON JB "@1JB",0x0D
SPEAKER B OFF SPEAKER B OFF KA "@1KA",0x0D
SPEAKER B ON SPEAKER B ON KB "@1KB",0x0D
SLEEP OFF LA "@1LA",0x0D
SLEEP 10min LB "@1LB",0x0D
SLEEP 20min LC "@1LC",0x0D
SLEEP 30min LD "@1LD",0x0D
SLEEP 40min LE "@1LE",0x0D
SLEEP 50min LF "@1LF",0x0D
SLEEP 60min LG "@1LG",0x0D
SLEEP 70min LH "@1LH",0x0D
SLEEP 80min LI "@1LI”,0x0D
SLEEP MODE
SLEEP 90min LJ "@1LJ",0x0D
DISP DISP (Toggle) MA "@1MA",0x0D
OSD OFF NA "@1NA",0x0D
OSD OSD ON NB "@1NB",0x0D

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MENU OFF ZA "@1ZA",0x0D
MENU MENU (OK) ZB "@1ZB",0x0D
CURSOL UP ZC "@1ZC",0x0D
CURSOL DOWN ZD "@1ZD",0x0D
CURSOL LEFT ZE "@1ZE",0x0D
CURSOL
CURSOL RIGHT ZF "@1ZF",0x0D
FREQ. UP PB "@1PB",0x0D
FREQ. DOWN PC "@1PC",0x0D
AUTO UP START/STOP PD "@1PD",0x0D
TUNER FREQUENCY
AUTO DOWN START/STOP PE "@1PE",0x0D
PRESET INFO. QA "@1QA",0x0D
P-SCAN QB "@1QB",0x0D
PRESET UP QC "@1QC",0x0D
TUNER PRESET
PRESET DOWN QD "@1QD",0x0D
F-DIRECT OFF RA "@1RA",0x0D
F-DIRECT F-DIRECT ON RB "@1RB",0x0D
STEREO RC "@1RC",0x0D
TUNER MODE MONO RD "@1RD",0x0D
CLR RE "@1RE",0x0D
MEMO/CLR MEMO RF "@1RF",0x0D
DIRECT KEY 0 SA "@1SA",0x0D
DIRECT KEY 1 SB "@1SB",0X0D
DIRECT KEY 2 SC "@1SC",0x0D
DIRECT KEY 3 SD "@1SD",0x0D
DIRECT KEY 4 SE "@1SE",0x0D
DIRECT KEY 5 SF "@1SF",0x0D
DIRECT KEY 6 SG "@1SG",0x0D
DIRECT KEY 7 SH "@1SH”,0x0D
DIRECT KEY 8 SI "@1SI",0x0D
DIRECT KEY
DIRECT KEY 9 SJ "@1SJ",0x0D
RDS DISP MODE TA "@1TA",0x0D
RDS RDS PTY TB "@1TB",0x0D
AUTO U0 "@1U0",0x0D
DOLBY U6 "@1U6",0x0D
DD+PLⅡx MOVIE U7 "@1U7”,0x0D
DD+PLⅡx MUSIC U8 "@1U8”,0x0D
AAC+PLⅡx MOVIE U9 "@1U9”,0x0D
AAC+PLⅡx MUSIC UA "@1UA”,0x0D
DOLBY PLⅡx MOVIE UB "@1UB”,0x0D
DOLBY PLⅡx MUSIC UC "@1UC”,0x0D
DOLBY PLⅡx GAME UD "@1UD”,0x0D
DOLBY PLⅡMOVIE UE "@1UE”,0x0D
DOLBY PLⅡMUSIC UF "@1UF”,0x0D
DOLBY PLⅡGAME UG "@1UG”,0x0D
DOLBY PROLOGIC UH "@1UH",0x0D
EX/ES UI "@1UI",0x0D
VIRTUAL6.1 UJ "@1UJ",0x0D
DOLBY DIGITAL EX UK "@1UK",0x0D
DTS ES UL "@1UL",0x0D
NEO6 CINEMA UO "@1UO",0x0D
NEO6 MUSIC UP "@1UP",0x0D
Mch-STEREO UQ "@1UQ",0x0D
CSⅡCINEMA UR "@1UR",0x0D
CSⅡMUSIC US "@1US",0x0D
CSⅡMONO UT "@1UT",0x0D
SURROUND MODE
VIRTUAL Uc "@1Uc",0x0D

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STEREO Ud "@1Ud",0x0D
DTS-MODE UV "@1UV",0x0D
SRS-MODE UW "@1UW",0x0D
SOURCE DIRECT UX "@1UX",0x0D
SURR. MODE NEXT UY “@1UY”,0x0D
SURR. MODE PREV UZ “@1UZ”,0x0D
TEST TONE TEST TONE OFF VA "@1VA",0x0D
TEST TONE ON VB "@1VB",0x0D
NIGHT OFF WA "@1WA",0x0D
NIGHT NIGHT ON WB "@1WB",0x0D
RE-EQ ON XA "@1XA”,0x0D
RE-EQ (HT-EQ) RE-EQ OFF XB "@1XB,0x0D
MAIN+SUB YGA "@1YGA",0x0D
MAIN YGB "@1YGB",0x0D
BILINGUAL
SUB YGC "@1YGC",0x0D
DC TRG ON YJA "@1YJA",0x0D
REMOTE DC TREGGER DC TRG OFF YJB "@1YJB",0x0D