Vela CineCast 2000-0422, Installation And User Manual

Page: 140 / 196

126 CineCast Quad Pro Version 2.6 Installation and User Manual
MPEG WRITE (10)
MPEG WRITE (10)
(Opcode 0x2A, 10 bytes)
This command is currently being used for the transfer of MPEG data to the Vela
SCSI decoder. Format of the
WRITE
(10) command:
Each playback channel (LUN) has DRAM divided into 64-K buffers:
The transfer length must be a multiple of 64-K, which is 80h logical blocks (512
bytes/block). The Logical Block Address is ignored.
DPO:
Disable Page Out must be zero.
FUA: Force Unit Access must be zero.
RelAddr: Relative Address must be zero.
Approximate transfer times of 64-K:
LUN 0 56 64-K buffers 3.5MB
LUN 1 56 64-K buffers 3.5MB
LUN 3 56 64-K buffers 3.5MB
LUN 4 56 64-K buffers 3.5MB
Asynchronous Synchronous
Narrow (8-Bit) 10.9 ms 2.0 ms
Wide (16-Bit) 5.5 ms 1.0 ms
Table 2-30.MPEG WRITE (10) Command Format