Marantz SR-9600-RS-232C Control Specification

RS-232C Control Specification :

Rev 00

SR9600

RS-232C Control Specification

Category :

Document Version :

A/V Receiver

1.0

Author(s) :

Date : 2006/08/18

Number of Page : 25

Marantz America, Inc.

Marantz America, Inc. 2006

All rights are reserved. Reproduction in whole or in part is prohibited without the written consent of copyright.

All specifications might be subject to change without notice.

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Table of Contents

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 connection specification of the 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 and Auto status feedback.......................................................................... 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. Specification of Auto status feedback ..................................................................................................... 6

3-3-4. Example of the transactions.................................................................................................................... 6

3-3-5. Examples of the handshaking flowchart ................................................................................................7

3-3-5-1. Example of successful handshaking.............................................................................................. 7

3-3-5-2. Examples of handshaking error...................................................................................................... 7

4. Recommendations of Command, Status and Layer definition..................................................................... 8

5. Definitions of Command, Status and Layer......................................................................................................9

5-1. Commands....................................................................................................................................................... 9

5-1-1. Normal Command list.............................................................................................................................. 9

5-1-2. Specific Commands...............................................................................................................................17

5-2. Status request and Status answer list...........................................................................................................18

5-2-1. Normal Status request and Status (answer and feedback) list........................................................... 18

5-2-2. Layer of the statuses .............................................................................................................................23

6. Revision history...................................................................................................................................................25

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1. Introduction

1-1. Purpose

This document was written as a reference specification of products that are controled by the host controller.

1-2. Scope

This document would be using by software or hardware engineers for production of the product.

1-3. Abbreviations

Abbreviation Description

1-4. References

- Hardware Software Interface Specification ver. 1.02 / author: N.Sakamoto

2. Global Description

2-1. Overview

A Host controller can control or watch out the product as a Slave very easily via the communication cable.

2-2. Block Diagram

* The product connector is using D-SUB 9pin male.

* RS232C cable must use D-SUB 9pin female to connect the products.

2-3. Interface connection specification of the product

uP Interface Signal name Connection device D-Sub Pin Connecter

2-4. Assumptions and Dependencies

HOST

(Controller)

- N.C. - 1 TxD (output) 2 UART RxD (input)

- N.C. - 4

- GND GND 5

- N.C. - 6

- N.C. - 7

- N.C. - 8

- N.C. - 9

RS232C cable (straight)

RS232C

Level shift driver

SLAVE

(The product) Connector

D-SUB (9pin, male)

<The product connector> RS232C D-SUB (9pin,Male)

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3. Detailed Description

The interface specification between the product and a Host controller is described below.

3-1. Connection format

3-1-1. Physical connection

Host (Controller) Slave (the product)

(Serial setting <RS232C basic>) Baud Rate : 9600bps

TxD

Data Bits : 8bit Parity : None

RxD

Stop bit : 1bit

Handshaking : None

3-1-1-1. Data transmission sequence from Host to Slave

Host (Controller) Slave (The product)

3-1-1-2. Data transmission sequence from Slave to Host

GND

TxD → RxD

RxD ← TxD

1. Host starts a data transmission from TxD.

2. Host performs the data transmission of the number of required bytes, and ends a transmission.

Host (Controller) Slave (The product)

TxD → RxD

RxD ← TxD

1. Slave starts a data transmission from TxD.

2. Slave performs the data transmission of the number of required bytes, and ends a transmission.

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 : ’@’ COMMAND : see “Command list”

End character (CR) : 0Dh

start

‘@’

3-2-1-2. Form2: Status request

Status request is a data that requests a answer of some status. Start character : ’@’ Request status : see “Status request list”

Request character : ‘?’ End character (CR) : 0Dh

start

‘@’

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 is sent to Host when Slave has no related status by the Command.)

Start character : ’@’, ACK : 06h, End character (CR) : 0Dh

‘

NAK is a reply data from Slave when Slave got an incorrect Command data, Status request data or

some other data from Host.

Start character : ’@’, NAK : 15h, End character (CR) : 0Dh

3-2-2-2. Form2: Status answer and Auto status feedback

Status answers are reply data when Slave got an acceptable Request status or Command data from

Host. Auto status feedbacks are send to Host data when a Slave’s status is changed. Start character : ’@’ Answer character : see “Status list”

End character (CR) : 0Dh

start

‘@’

command

“xxx:”+”...”

request status

“xxx:?”+”...”

ACK

06h

’

NAK

15h

‘

’

status

“xxx:”+”...”

end

0Dh

end

0Dh

end

0Dh

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3-3. The transaction sequences and the regulations

3-3-1. The transaction sequences

The transactions have three kinds of sequence.

*A transaction is a Command from Host then Slave will be an answer by Status answer, ACK or NAK.

*A transaction is a Status request from Host then Slave will be an answer by Status answer or NAK.

*A transaction is Auto status feedback from Slave when a Slave’s status changed. (If the auto status

feedback is enabled.)

3-3-2. The transaction regulations

The transactions have some kinds of regulation.

* An answer (ACK, NAK or Status answer) transmittion by Slave has to finish within 500ms when got a

Command or a Status request from Host.

* 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 a term of waitinng time from a finishing of previous

transmission of a Command or a Status request ".

* Slave has to finish a transaction under 500ms when it sends Auto status feedback data.

3-3-3. Specification of Auto status feedback

There are some specific regulations about Auto status feedback.

* The product status has segmented into four layers of 1, 2, 3 and 4.

* The status of layer 1 are assigned most kindly status to Host. (The statuses of layer 2 are assigned kindly status,

the statuses of layer 3 are not so need status to Host and the statuses of layer 4 are probably no wished statuses.)

* Each layer status can control transmit enable or disable by Host command. (The product default

would be all disables.)

* Slave sends auto status feedback by itself when the status is changed and if the status feedback is

enabled.

* The product defined and segmentationed layers are takeing in status list.

3-3-4. Example of the transactions

TxD RxD

RxD TxD

Command

max. 0.5sec

Status answer ,

ACK or NAK

a transaction a transaction

Example of the transactions

Status

request

max. 0.5sec

Status answer

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3-3-5. Examples of the handshaking flowchart

3-3-5-1. Example of successful handshaking

SLAVEHOST

Com m and

Status request

Com m and acce

Request acce

Changed som e status!

table