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Chapter 2 — Overview and Operation
The below table selects the video stream ID to decoder where VVVVb
determines the video stream ID:
15
14
1
0
X = Doesn't care
Note that once stream IDs have been set, they will remain in effect until "Restore
Audio/Video Stream ID" is sent or a soft reset is sent.
0029 Video Encoder Register Address Setup: Ignored by firmware.
002A Video Encoder Data: Ignored by firmware.
002B Error Mask: Used to enable/disable error checking for MPEG stream
decoder errors, audio/video channel buffer errors, and loss of genlock errors.
By default, all these errors are masked (disabled). The 32-bits of data contained
in the Error Mask are as follows:
Bit
Error Mask
0–9
Reserved
10
Genlock Loss Error
11
Collision Errors (Sense Key =
01h, ASCQ = 1800h)
12
Audio Channel Buffer Error
13
Audio/Video MPEG Decode Error
(MPEG syntax error)
14
Video Channel Buffer Error
Logical 1 = Enable event; Logical 0 = Disable event. Refer to "Error Reporting," page 135,
for more information.
Video Stream ID Select
13
12
11
1
X
V
Capability provided.
ASB= 0107 Genlock Sync Lost.
Firmware monitors the fullness of the audio and
video rate buffers. An error is generated when
the rate buffer is detected as empty.
ASB = 0104 Video Rate Buffer Empty
ABS = 0204 Audio Rate Buffer Empty
Not provided; use Collision Error instead.
Capability is NOT provided.
Not provided; use Collision Error instead.
10
9
V
V
Notes & Limitations
DECODER Command (45h)
77
8
V
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