Parity page (00h)
By means of the Parity page the host can enable Parity retries and select the maximum number of retries.
Bit 7 6 5 4 3 2 1 0
Byte
0 PS (1) SPF (0) Page Code (00h)
1 Additional Page Length (02h)
2 Reserved Parity Reserved
3 Maximum Parity retries
Field descriptions:
PS: Parameters Savable. This field is set to one. The media changer can write this page to
non-volatile memory.
Parity:
This bit indicates whether parity retries are enabled or disabled. By factory default parity retries are
enabled.
Maximum Parity retries:
This field indicates the maximum number of retries performed on a parity error during data out,
data in, and message out phase. By factory default the number of parity retries is set to 4. The
maximum value allowed in the parity retry field is 7.
Control Extension page (0Ah)
By means of this page the host can retrieve SCSI features provided by the media changer.
Bit 7 6 5 4 3 2 1 0
Byte
0 PS (0) SPF (1) Page Code (0Ah)
1 Subpage code (01h)
2 (MSB) Page Length (1Ch)
3 (LSB)
4 Reserved TCMOS SCSIP IALUAE
5 Reserved Initial Priority
6 - 31 Reserved
Field descriptions:
PS: Parameters Savable. This field is set to zero. The media changer cannot write this page to
non-volatile memory.
SPF: The Sub Page Format (SPF) bit is set to one to indicate this is a subpage.
TCMOS:
A TCMOS bit set to zero specifies that the timestamp shall not be changed by any method except
those defined by this standard.
SCSIP:
A SCSI precedence (SCSIP) bit set to one specifies that the timestamp changed using a SET
TIMESTAMP command shall take precedence over any other methods.
3-32 TL2000 and TL4000 SCSI Reference
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