Pioneer SCSI-2 - Manual (Page 26)

Audio Scan (1)
- 13 -
2.1 Audio Scan (1) (CDh)
When AUDIO SCAN (1) is executed, the drive begins a high-speed scan from the Scan Start
Address. The drive plays a block as it crosses each track. Each scan is approximately 15 seconds.
When the specified search address is found, GOOD status is returned.
If the drive is not ready or if the Scan Start Address is not on an audio track, Check Condition
status is returned.
During an audio scan, the drive can receive and execute the following SCSI commands without
scan termination:
AUDIO PLAY (StpAdr=1), AUDIO STATUS, AUDIO STOP
INQUIRY
MODE SELECT, MODE SENSE
READ BUFFER, WRITE BUFFER
READ CD-ROM CAPACITY, READ SUB CHANNEL, READ TOC
RECEIVE DIAGNOSTIC RESULTS, REQUEST SENSE, TEST UNIT READY
RELEASE, RESERVE
There are several commands that when received by the drive during an audio scan, the drive will
terminate the scan and execute the received command. The commands are:
PLAY AUDIO (StpAdr=0), AUDIO SCAN, PLAY AUDIO TRACK
PAUSE/RESUME
READ, SEEK, VERIFY
READ HEADER
START/STOP UNIT, REZERO UNIT
SEND DIAGNSTICS
PREVENT/ALLOW MEDIA REMOVAL
Operation Code is (CDh).
Direct
is “0” (FALSE) when the drive scans forward.
is “1” (TRUE) when the drive scans backwards.
Scan Start Address contains the address at which the audio scan is to begin.