Vela CineCast 2000-0422, Installation And User Manual

Page: 107 / 196

Chapter 2 — Overview and Operation 93
Mode Parameter Pages
MODE PARAMETER Block Descriptor
The Block Descriptor gives information on the size of the logical block in bytes.
This section is included in the mode parameter data only if the Block Descriptor
Length above is specified.
Density Code
Ignored by the decoder.
Number of Blocks
Ignored by the decoder.
Block Length
Ignored by the decoder. The decoder’s Block Length is always 512 bytes per
block. This 512-byte length applies to all SCSI
READ
and
WRITE
commands.
Mode Parameter Pages
Individual page data follows the Header and Block Descriptor (if supplied). The
page data can consist of a single mode page or many mode pages. The decoder
implements the following pages:
Supported Mode Pages
Vela MPEG Decoder Status
Page (Read Only)
Mode Page 30h Separate page for each LUN
MPEG Audio/Video Status
Page (Read Only)
Mode Page 32h Separate page for each LUN
Time Code Page (Read only) Mode Page 34h Separate page for each LUN
Audio Level Page (Read only) Mode Page 35h Separate page for each LUN
7 6 5
Density Code
Number of Blocks
Reserved
Block Length
4 3 2 1 0
0
1-3
4
5-7
Bit
Byte
Table 2-17.MODE PARAMETER Block Descriptor Format