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host is not sending data fast enough to keep up with the playback rate. This is a
fatal playback error, in which the decoder is informing the host system that play-
back has stopped. The decoder will return the following on the next
Sense Key
Additional Sense Code and Qualifier
A
command, new data [via
RESET BUFFER
command are required before playback can start again.
When set to 1, the decoder will automatically enter a Pause state when the
decoder detects that the DRAM buffer is empty. The decoder will wait for eight
64-K buffers to be filled before resuming playback. This mode requires that a
be sent at the end of a stream, so the decoder knows the differ-
RESET BUFFER
ence between the data underflow and the end of a stream. Also, the decoder
keeps a count of the number of times this data underrun condition occurs.
Refer to Mode Page (30h).
Mid-Stream Start (Midstrm)
By setting this bit to 1, the decoder will automatically find the first valid sequence
header before starting playback. This allows the start of playback in a random
position within an MPEG file. (This feature may delay video start-up by a few
frames. The end result will be more black between back-to-back videos.)
Autodetect must be used with mid-stream starts. By setting this bit to 0, the
decoder assumes that the MPEG stream begins on a valid sequence header.
Automatic Pause on First Visible Frame (Pause)
When this bit is set to 1, the decoder begins playback, but automatically pauses
on the first non-black video frame. This depends on the value of Pre-Black. Once
paused, use the
DECODER
pause. Alternatively, the
advance one video frame.
Trigger
When this bit is set to 1, the decoder waits for the trigger event (as defined in Trigger
Event) to occur before beginning playback.
Autodetect
MPEG PLAY Command
CineCast Quad Pro Version 2.6 Installation and User Manual
SCSI Status
(45
) command with code 0012h to resume from
H
F RAME ADVANCE
Stream Type
Check Condition
03h Medium Error
0005h End-of-Data Detected
(10)], and a new
WRITE
(010
) command can be used to
F
Hex Code
00h
(10):
WRITE
MPEG PLAY
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