Marantz VP-4001 Schematic

RS-232C Control Specification :

Rev 00

VP4001

RS-232C Control Specification

Category :

Document Version :

Video Projector

1.0

Author(s) :

Date : 2006/10/07

Number of Page : 15

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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Document Version [1.0]

Table of Contents

Introduction............................................................................................................................................................ 3

1.

1-1. Purpose ............................................................................................................................................................ 3

1-2. Scope................................................................................................................................................................ 3

1-3. Abbreviations ...................................................................................................................................................3

2. Global Description ................................................................................................................................................ 3

2-1. Overview...........................................................................................................................................................3

2-2. Block Diagram.................................................................................................................................................. 3

2-3. Interface connection specification of the product...........................................................................................3

2-3-1. RS-232C Cross Cable............................................................................................................................. 3

2-3-2. Signal Discription ..................................................................................................................................... 4

3. Detailed Description.............................................................................................................................................. 4

3-1. Connection format ...........................................................................................................................................4

3-1-1. Physical connection................................................................................................................................. 4

3-2. Transmission data format................................................................................................................................ 4

3-2-1. Transmission data format from Host to Slave........................................................................................ 4

3-2-1-1. Form1: Command ........................................................................................................................... 4

3-2-2. Transmission data format from Slave to Host........................................................................................5

3-2-2-1. Form1: OK/ERR .............................................................................................................................. 5

3-2-2-2. Form2: Status answer and Auto status feedback.......................................................................... 5

3-3. The transaction sequences and the regulations............................................................................................ 5

3-3-1. The transaction sequences..................................................................................................................... 5

3-3-2. The transaction regulations..................................................................................................................... 5

4. Definitions of Command and Status.................................................................................................................. 6

4-1. Commands....................................................................................................................................................... 6

4-1-1. Normal Command for General ............................................................................................................... 6

4-1-2. Normal Command for COMPONENT 1 Input ....................................................................................... 9

4-1-3. Normal Command for COMPONENT 2 Input ..................................................................................... 10

4-1-4. Normal Command for S-VIDEO Input.................................................................................................. 11

4-1-5. Normal Command for VIDEO Input ..................................................................................................... 12

4-1-6. Normal Command for RGB Input.........................................................................................................13

4-1-7. Normal Command for HDMI Input........................................................................................................14

5. Revision history...................................................................................................................................................15

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Document Version [1.0]

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

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 9-pin Mini DIN connector.
* D-SUB to Mini DIN adapter is attached as an accesory.
* Cross type RS232C cable have to be used (D-SUB 9-pin female on product side).

2-3. Interface connection specification of the product

2-3-1. RS-232C Cross Cable

HOST

(Controller)

Connector Pin # Signal

1
2
3
4
5
6
7
8
9

RS232C cable (Cross)

Name

CD CD
RD RD
SD SD
ER ER
SG SG
DR DR
RS RS
CS CS

CI

Connection Signal

Name

CI

Pin

#

1
2
3
4
5
6
7
8
9

SLAVE

(VP4001)

Connector:

Mini DIN 9-pin

Connector

<Adapter connector>

D-SUB 9-pin, Male

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2-3-2. Signal Discription

Pin # Signal Name I/O Reference

1 CD Not Connected
2 RD Receive Data Input Connected to Internal Circuit
3 SD Send Data Output Connected to Internal Circuit
4 ER
5 SG Signal Dround Connected to Internal Circuit
6 DR

1

4

3

2

5

6

7 RS Request to Send Connected to Internal Circuit
8 CS Clear to Send Connected to Internal Circuit

7

9

8

9 CI

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

Baud Rate : 9600bps or 115200pbs
Data Bits : 8bit
Parity : None
Stop bit : 1bit

Handshaking : None

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.
Commands from the Host are sent in the following order: command, parameter, and return code.
After the projector processes the command from the host, it sends a response code to the computer.

Command Format

C1 C2 C3 C4 P1 P2 P3 P4 0DH

Command (4 digits) Parameter (4 digits Return Code

Start character : None
COMMAND : see “Command list”
End character (CR) : 0Dh

Note:

• When controlling the projector by using RS-232C commands, wait for at least 30 seconds after the power
has been turned on, and then transmit the commands.

• When more than one code is being sent, send each command only after the response code for the
previous command from the projector is verified.

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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: OK/ERR

OK is a reply data from Slave when Slave got an acceptable command data from Host.

Command Format

O K 0DH

Return Code
Reply: OK
End character (CR): 0Dh

ERR is a reply data from Slave when Slave got an incorrect Command data, Status request data or
some other data from Host.

Command Format

E R R 0DH

Return Code

Reply: NAK
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 : None
Answer character : see “Status list”

End character (CR) : 0Dh

3-3. The transaction sequences and the regulations

3-3-1. The transaction sequences

There are three kinds of the transaction sequence,

*A transaction starts from Command from Host and then Slave will return Status answer, OK or ERR.

*A transaction starts from Status request from Host and then Slave will return Status answer or ERR.

*A transaction starts by Auto status feedback from Slave when a Slave’s status was changed.

3-3-2. The transaction regulations

The transactions have some kinds of regulation.

* An reply (OK, ERR 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.

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