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BDR-203/BDC-203 Command Reference Manual Version 0.90
Page 39
Table 42 – Parameters to set Writing speed for +R/+RW/+R DL media
Write time Write Size
+R
Writing Speed
+R DL
Writing Speed
+RW
Writing Speed
0000h 0001h – FFFFh 16x CAV 8x ZCLV 8x ZCLV
0000h – 15A3h 2.4x CLV 2.4x CLV 2.4x CLV
15A4h – 2075h 4x CLV 4x CLV 4x CLV
2076h – 2B47h 6x CLV 6x CLV 6x CLV
2B48h – 40EBh 8x ZCLV
40ECh – 568Fh 12x ZCLV
03E8h
5690h – FFFFh 16x CAV
8x ZCLV 8x ZCLV
Table 43 – Parameters to set Writing speed for BD-R/RE media
Write time Write Size
BD-R
Writing Speed
BD-RE
Writing Speed
0000h 0001h – FFFFh 8x ZCLV
0000h – 463Bh 2x CLV
463Ch – 6959h 4x CLV
695Ah – 8C77h 6x ZCLV
03E8h
8C78h – FFFFh 8x ZCLV
2x CLV
4.22 WRITE (10), WRITE (12) Command
The RelAdr bit is not supported and must be set to zero.
If the drive received a WRITE (10) or a WRITE (12) Command which causes an over run condition of the writing buffer, the
execution of the command is deferred until the blank area of the buffer grows to be able to receive whole the data specified in the
command. In this period, the interface bus is held by the drive.
A recording start is carried out when one of the following conditions is realized.
1)Write Buffer fills.
2) SYNC CACHE command is received.
In the recording state ,if eject or read request occurs, the data in a buffer is recorded and it ends. Eject or read request is
performed continuously.
In the recording state ,if a buffer-under-run occurs, the drive leaves data for 1ECC and interrupts record operation temporarily
until It receive the following Write command.
The Streaming bit of the WRITE (12) Command is reflected to the time-out value of write starting. If Streaming bit is set to one,
the time-out value is set to 2 sec. If Streaming bit is set to zero time-out value is set to 5 sec. The drive maintains the Streaming
bit of the latest Write (12) Command and determines the time-out value by maintained Streaming bit when writing operation is
started. If sequential data are transferred, the Streaming bit of all WRITE (12) Command needs to keep same value.
The time-out value is valid in normal operating condition. If the drive is in abnormal condition, for example play backing the
damaged area on the media, the time-out value will be grower by the drive to return from emergency condition of servo
mechanism.
The FUA bit and the TSR bit are not supported and these are ignored.
For BD-RE/R, if the Streamig bit is set to one, Stream recording operation is used.
The VNR bit of WRITE(12) is applicable to BD-RE/R.
4.23 WRITE BUFFER Command
This command is used for checking the drive or firmware update.
The specifications of this command are vendor unique.
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