Teac CD-RW901SL Manuel utilisateur

TASCAM CD-RW901

CONTROL I/O connector

RS-232C Protocol Specification

Ver.1.00

August 2006

TEAC Corporation

TASCAMCD-RW901RS-232CProtocolSpecification

1 TEAC Corporation

1. Overview

The CD-RW901's REMOTE connector can be used to control the CD-RW901 from a computer or

other external device. In this document, the CD-RW901 is referred to as the "controlled device,"

and the external device that controls it is referred to as the "external controller."

2. Specifications

2.1. Electrical specifications

Conforms to standard JIS X-5101 (equivalent to former JIS C-6361 and EIA RS-232C)

(Not compatible with the RS-422A used in professional VTR units)

Impedance at receiver When measured with an applied voltage of between ±3 and 15V, the DC

resistance is between 3KΩand 7KΩ.

Total load capacitance is less than 2500pF

Open circuit voltage at transmitter Less than 25V

Open circuit voltage at receiver Less than 2V

Signal voltage When the open circuit voltage at the receiver is 0V, the signal voltage is

between ±5V and ±15V for a load impedance of between 3K and 7KΩ.

Signal discrimination Logical “1” Less than -3V

Logical “0” More than +3V

2.2. Communication format

Circuit type 3-wire, half-duplex

Transmission type Digital binary serial

Data speed (baud rate) 4800/9600/19200/38400 bit/sec

Character length 7/8 bit

Parity bit Odd/Even/None

Stop bit 1/2 bit

(Data speed, character length, parity bit, and stop bit settings are made on the CD-RW901.)

2.3. Connector pin-out

Connector D-sub 9-pin female (metric thread)

Terminal pin-out and input/output signals

Pin no. In/Out Signal name Description

1 - NC Not connected

2 In Rx Data Data received at this pin *1

3 Out Tx Data Data transmitted from this pin

4 Out (Reserved) Reserved

5 - GND Ground

6 In (Reserved) Reserved

7 Out RTS Request To Send (output "request to transmit") *2

8 In CTS Clear To Send (input "ready to receive") *2

9 - NC Not connected

*1：A voltage that satisfies the RS-232C specification must be applied to Rx Data.

*2：RTS/CTS is loopback-connected within the controlled device. If using RTS/CTS control,

consider the design of the external controller.

TASCAMCD-RW901RS-232CProtocolSpecification

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RXD

TXD

RTS

CTS

GND

RXD

TXD

RTS

CTS

GND

Controlled device (CD-RW901) External controller

TASCAMCD-RW901RS-232CProtocolSpecification

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3. Command format

3.1. Command format overview

The command format is as follows.

Byte 1 Byte 2 Byte 3 Byte 4 Byte 5 Byte 6 Byte 7 Byte 8 … Byte n

LF ID Command Data 1 Data 2 Data 3 Data 4 … CR

Commands begin with a "line feed (LF)," end with a "carriage return (CR)," and are based on the ASCII

format.

The type following the LF is the machine ID. The machine ID is described later.

Commands are expressed by two ASCII bytes.

The byte string following the command expresses the data, and is between 0 bytes (for a command that

has no data) and a maximum of 98 bytes. For details on the data, refer to the detailed explanation for

each command. For commands that use 0--9 and A--F as data values, uppercase characters are used

for A--F.

Example commands

Example 1: Transmitting a PLAY command to a controlled device of ID=0

When the controlled device is in Stop or Ready mode, this command will initiate playback on the

controlled device.

The PLAY command is [12], and is transmitted as follows.

ID Command

ASCII LF 0 1 2 CR

HEX 0Ah 30h 31h 32h 0Dh

Example 2: Telling a controlled device of ID=0 to perform a direct search for track 123

The command "DIRECT TRACK SEARCH PRESET [23]" is transmitted to perform this action.

The data bytes consist of ASCII in two-byte units.

For the "DIRECT TRACK SEARCH PRESET" command, the track number is specified as

follows.

Data 1 Tens digit of the specified track number

Data 2 Ones digit of the specified track number

Data 3 Thousands digit of the specified track number

Data 4 Hundreds digit of the specified track number

Thus, the transmitted command will be as follows.

ID Command Data：track 123

ASCII LF 0 2 3 2 3 0 1 CR

HEX 0Ah 30h 32h 33h 32h 33h 30h 31h 0Dh

Example 3: Writing a title to track 23 of a controlled device whose ID=0

The command "TEXT PRESET [29]" is transmitted to perform this action.

This command allows up to eighty single-byte characters to be transmitted.

For example, the command to write a title "Test" would be as follows.

ID Command Track 23 Title：Test

ASCII LF 0 2 9 2 3 0 1 T e s t CR

HEX 0Ah 30h 32h 39h 32h 33h 30h 30h 54h 65h 73h 74h 0Dh

3.2. Machine ID

The CD-RW901 uses Machine ID=0 to receive commands and transmit returns.

Commands and returns using Machine ID=0 also exist, and these operations are described within this

document.

If a command with an ID other than Machine ID=0 is received, that command is ignored.

TASCAMCD-RW901RS-232CProtocolSpecification

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If an unsupported command is received, the CD-RW901 will transmit ILLEGAL [F2].

TASCAMCD-RW901RS-232CProtocolSpecification

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3.3. List of commands

A list of commands is given below.

Control/Preset/Sense Command Return Command

0F INFORMATION REQUEST 8F INFORMATION RETURN

10 STOP

12 PLAY

13 RECORD

14 READY

16 SHUTTLE

18 TRAY

1A TRACK/INDEX SKIP

1D CALL

20 AUTO CUE LEVEL PRESET A0 AUTO CUE LEVEL RETURN

21 AUTO TRACK LEVEL PRESET A1 AUTO TRACK LEVEL RETURN

23 DIRECT TRACK SEARCH PRESET

25 PITCH DATA PRESET A5 PITCH DATA RETURN

26 AUTO TRACK TIME PRESET A6 AUTO TRACK TIME RETURN

28 SYNC REC LEVEL PRESET A8 SYNC REC LEVEL RETURN

29 TEXT PRESET A9 TEXT PRESET ACKNOWLEDGE

2C TIME SEARCH PRESET

2D KEY CONTROL DATA PRESET AD KEY CONTROL DATA RETURN

2E FADE IN/OUT TIME PRESET AE FADE IN/OUT TIME RETURN

2F DIGITAL VOLUME DATA PRESET AF DIGITAL VOLUME DATA RETURN

30 AUTO CUE SELECT B0 AUTO CUE SELECT RETURN

31 AUTO TRACK SELECT B1 AUTO TRACK RETURN

32 EOM TRACK TIME SELECT B2 EOM TRACK TIME RETURN

33 EOM DISC TIME SELECT B3 EOM DISC TIME RETURN

35 PITCH CONTROL SELECT B5 PITCH CONTROL SELECT RETURN

36 AUTO READY SELECT B6 AUTO READY SELECT RETURN

37 REPEAT SELECT B7 REPEAT SELECT RETURN

38 SYNC REC SELECT B8 SYNC REC SELECT RETURN

3A INCR PLAY SELECT BA INCR PLAY SELECT RETURN

3D KEY CONTROL SELECT BD KEY CONTROL SELECT RETURN

4C REMOTE/LOCAL SELECT CC REMOTE/LOCAL SELECT RETURN

4E PLAY MODE SENSE CE PLAY MODE RETURN

50 MECHA STATUS SENSE D0 MECHA STATUS RETURN

53 ISRC SENSE D3 ISRC RETURN

55 TRACK No. SENSE D5 TRACK No. STATUS RETURN

56 DISC STATUS SENSE D6 DISC STATUS RETURN

57 CURRENT TRACK INFORMATION

SENSE

D7 CURRENT TRACK INFORMATION

RETURN

58 CURRENT TRACK TIME SENSE D8 CURRENT TRACK TIME RETURN

59 TEXT SENSE D9 TEXT RETURN

5D TOTAL TRACK No./TOTAL TIME SENSE DD TOTAL TRACK No./TOTAL TIME

RETURN

5E PGM TOTAL TRACK No./TOTAL TIME

SENSE

DE PGM TOTAL TRACK No./TOTAL TIME

RETURN

5F KEYBOARD TYPE SENSE DF KEYBOARD TYPE RETURN

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F0 ERROR SENSE REQUEST

F1 CAUTION SENSE REQUEST

F2 ILLEGAL STATUS

F4 POWER ON STATUS

F6 CHANGE STATUS

78 ERROR SENSE F8 ERROR SENSE RETURN

79 CAUTION SENSE F9 CAUTION SENSE RETURN

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3.4. Command sequence

In most cases the controlled device will not send an ACK in response to transport control or data preset

commands sent from the external controller.

The controlled device will send back a return command in response to data sense commands that

request a data value specified on the controlled device.

When the status of the controlled device changes, such as from Stop to Play mode, or when an error etc.

occurs, the controlled device will send a command indicating this to the external controller.

Examples of the command sequence are given below.

You must leave an interval of at least 20 ms between commands.

Example 1: Controlling the transport of the controlled device

This example describes the Play operation.

When the controlled device receives the PLAY command and enters Play mode, it will transmit

a CHANGED STATUS command.

ACK is not transmitted for the PLAY command.

Command

External controller Controlled device State of controlled device

Stopped

PLAY ->

<- CHANGED STATUS Transmit when starting Play

Example 2: Presetting data

This example describes setting the AUTO CUE LEVEL.

When the controlled device receives the AUTO CUE LEVEL PRESET (Preset) command, it will

set its AUTO CUE LEVEL.

ACK is not transmitted for this command.

Command

External controller Controlled device State of controlled device

AUTO CUE LEVEL

PRESET (Preset -54dB) -> AUTO CUE LEVEL set to

-54dB

Example 3: Obtaining specified data

This example describes obtaining the currently-set AUTO CUE LEVEL.

When the controlled device receives the AUTO CUE LEVEL PRESET (Sense) command, it will

return the currently-set AUTO CUE LEVEL.

Command

External controller Controlled device State of controlled device

AUTO CUE LEVEL

PRESET (Sense) ->

<- AUTO CUE LEVEL

RETURN

Example 4: Checking the status of the controlled device, and performing the next operation

When the operating status of the controlled device changes, it will transmit CHANGED

STATUS. By using CHANGED STATUS as a trigger for sending MECHA STATUS SENSE, the

new operating status can be determined.

This example shows how to check the record-ready status of the controlled device and then

initiate recording..

Command

External controller Controlled device State of controlled device

Stopped

RECORD (Record Ready) ->

TASCAM MD-CD1 RS-232C Protocol Specification

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<- CHANGED STATUS Transmitted when entering

record-ready status

MECHA STATUS SENSE ->

<- MECHA STATUS

RETURN

Returns record-ready status

RECORD (Record) ->

<- CHANGES STATUS Transmitted when entering

record status

3.5. Command details

The commands, data, and machine IDs described here are characters (ASCII).

A command is two character bytes, a machine ID is one character byte, and each item of data is an

individual character byte.

The CD-RW901 can use the following track numbers and group numbers. However if a number not

existing on the disc is specified, it will be considered an invalid command.

Track number (audio CD) maximum 99

Track number (MP3 CD) maximum 999

INFORMATION REQUEST

Requests the controlled device to return information such as the software version.

Command 0F

Machine ID 0

Data none

Return INFORMATION RETURN [8F]

STOP

Puts the controlled device in STOP mode, and defeats input monitor mode.

Command 10

Machine ID 0

Data none

Return none

PLAY

Puts the controlled device in PLAY mode, or in RECORD mode if it is in record-ready mode.

Command 12

Machine ID 0

Data none

Return none

RECORD

Puts the controlled device in RECORD-READY mode. If it is currently recording, assigns a track. If

the state is currently No Disc, puts the controlled device in Input Monitor mode.

Command 13

Machine ID 0

Data 2 bytes

Data 1 Data 2 Description Remarks

0 1 Record Ready Puts the device in record-ready mode.

0 2 Track Mark Assigns a track during recording.

0 3 Input Monitor Puts the device in Input Monitor mode while stopped.

・ If data other than the above is received, the CD-RW901 will transmit ILLEGAL [F2].

Return none

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READY

Puts the controlled device in PLAY-READY mode or RECORD-READY mode.

Command 14

Machine ID 0

Data 2 bytes

Data 1 Data 2 Description Remarks

0 0 invalid The command will be ignored in the case of this data.

ILLEGAL will not be transmitted.

0 1 Ready On

・ If data other than the above is received, the CD-RW901 will transmit ILLEGAL [F2].

Return none

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