Tascam CD-01U specifications Command Sequence, Changed Status

Page 7

TASCAM CD-01U/CD-01U PRO RS-232C Protocol Specifications

3.4. Command Sequence

The CD-01U/CD-01U PRO does not have the “ACK” command for the each transport control command and data preset command.

When a request command is transmitted from external controller to the controlled device, the controlled device sends an appropriate return command.

When the mechanism status of the controlled device is changed (i.e. from stop to play), or an error occurs, the controlled device sends a command to notify such change to the external controller.

Some samples of command sequence are described below:

Note that an interval of at least 20 ms must be left between commands.

Sample 1: Transport control (i.e. PLAY)

The controlled device is in STOP mode.

Send the transport control (PLAY) command from the external controller to the controlled device.

The controlled device starts playback and sends the CHANGE STATUS return command.

 

Command

Status of the controlled

External controller

 

 

Controlled device

device

 

 

 

 

STOP

PLAY

 

->

 

Starts playback

 

 

<-

CHANGED STATUS

Sent the CHANGE STATUS

 

 

 

return command

 

 

 

 

Sample 2: To preset a data (i.e. PITCH CONTROL DATA PRESET)

Send the PITCH CONTROL DATA PRESET command with pitch control value from the external controller to the controlled device.

The controlled device sets the pitch control data.

 

Command

Status of the controlled

External controller

 

 

Controlled device

device

PITCH CONTROL

DATA

->

 

Sets pitch control data to -1.0%.

PRESET (i.e. –1.0%)

 

 

 

 

 

 

 

Sample 3: To request the status or a data currently set (i.e. PITCH CONTROL DATA)

Send the PITCH CONTROL DATA PRESET command with request data [FF] from the external controller to the controlled device.

If the controlled device has the pitch control data, the controlled device returns the PITCH CONTROL DATA RETURN with pitch control value.

 

Command

 

Status of the controlled

External controller

 

 

Controlled device

 

device

PITCH CONTROL

DATA

->

 

 

 

PRESET (with FF)

 

 

 

 

 

 

 

 

 

 

 

<-

PITCH CONTROL

DATA

 

 

 

RETURN

 

 

 

 

 

 

 

7

TEAC Corporation

Page 6 Page 8
Image 7
Page 6 Page 8
Contents Tascam CD-01U/CD-01UPRO Connector pin-out Electrical SpecificationsCommunication format RXD TXD GND Machine ID Command Format OverviewControl/Preset/Sense Command Return Command List of CommandsTotal Track No. / Total Time Sense 5D Changed Status Command SequenceInformation Request Call ShuttleEject Track SkipDirect Track Search Preset Auto CUE Level PresetDescription Remarks Data Time Search Preset Pitch Control Data PresetEOM Track Time Select Fade IN/OUT Time PresetData Remarks Auto CUE SelectPitch Control Select TIMER/RESUME Play SelectAuto Ready Select Incr Play Select Repeat SelectFade IN/OUT Select Mecha Status Sense Play Mode SelectTime Data Send Select Play Mose SenseCurrent Track Time Sense Isrc SenseDisc Status Sense Current Track Information SenseError Sense Information Return Time DataAuto CUE Level Return EOM Track Time Return Pitch Control Data ReturnFade IN/OUT Time Return Auto CUE Select ReturnRepeat Select Return TIMER/RESUME Play Select ReturnPitch Control Select Return Auto Ready Select ReturnTime Data Send Select Return Play Mode ReturnIncr Play Select Return Fade IN/OUT Select ReturnIsrc Return Mecha Status ReturnTrack No. Return Current Track Information Return Disc Status ReturnTotal Track No./TOTAL Time Return Current Track Time ReturnIllegal Status Error Sense RequestPower on Status PGM Total Track No./TOTAL Time ReturnError Sense Return
Top Page Image Contents