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BDR-203/BDC-203 Command Reference Manual Version 0.90
Page 36
4.16 READ BUFFER CAPACITY Command
The Block bit is supported.
The Length of Buffer field in the READ BUFFER CAPACITY data is set to following.
BD or no medium : 180000h
DVD : 118000h
CD : 126800h
4.17 READ CAPACITY Command
The RelAdr bit is not supported and must set to 0.
If empty disc is mounted, the Logical Block Address field in the Read Capacity Data is set to zero.
If a non-blank +RW disc is mounted, the Logical Block Address field in the Read Capacity Data is set to 23053Fh.
If a disc that is not a +RW and has no Complete Session is mounted, Logical Block Address field in the Read Capacity Data is
set to zero.
When a CD-R/RW disc is mounted, if it is recorded by Track-at-once, the Logical Block Address field in the Read Capacity Data
is set to the LBA immediately behind of the outermost Lead-out, so 2 Run-out blocks will be encountered.
4.18 READ DISC INFORMATION Command
For +R/+R DL media, the Last Session Lead-in Start Address is the LBA of where the next Intro shall be recoded. If no session
exists on the disc, then the value returned is 00000000h. If the disc has complete status, then the value returned is FFFFFFFFh.
For +R media, the Last Possible Lead-out Start Address is the LBA found in the ADIP of the disc’s lead-in. If the disc has
complete status, then the value returned is FFFFFFFFh.
For +R DL media, the Last Possible Lead-out Start Address is set as follows.
1) In case of a disc that has no complete status, it is set to the following value.
The value = ( L0 Data Zone Capacity + 1 – 30000h ) x 2 – Extended Partial Lead-out Size
As for the L0 Data Zone Capacity,
if it has not been changed from the default value, it is set to the Last Possible Physical Sector of the Data Zone on Layer 0 in
ADIP,
and if it has been changed from the default value, it is set to the Actual last PSN of Data Zone on Layer 0 in TOC.
As for the Extended Partial Lead-out Size,
if the disc has an Extended Partial Lead-out, it is 30000h,
and if the disc has no Extended Partial Lead-out, it is 0.
2) In case of a disc that has a complete status, it is set to FFFFFFFFh.
The OPC table is not supported for +R/+RW/+R DL media.
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