Internal Modules
252
SPRUHI7A – December 2012 – Revised June 2016
Copyright © 2012–2016, Texas Instruments Incorporated
High-Definition Video Processing Subsystem (HDVPSS)
1.2.13.3.3.3.8 Abort Channel
An Abort Channel descriptor is used to clear a channel. This clears the channel from issuing any more
requests. Any outstanding requests for that channel will complete as originally scheduled. All data inside
the client will be flushed. For Tiled Clients such as the noise filter it is required to issue two consecutive
abort channel descriptors to ensure the channel is aborted for both the current tile and next tile. Word 0,
Word 1 and Word 2 are reserved.
Table 1-102. Abort Channel Field Descriptions (Word - 3)
Bit
Name
Description
31-27
Packet Type
Host Packet Descriptor type = 0xC
26-24
Reserved
Reserved
23-16
Source
VPDMA Channel Number whose transfers
are to be aborted
15-4
Reserved
Reserved
3-0
Control
Control type = 9h
1.2.13.3.3.3.9 Toggle LM Field
A Toggle LM Field descriptor is used if the clients set their frame source to LM FID. The read clients will
start transmitting data upon the FID signal inside the LM changing value. This descriptor will cause the LM
to toggle the value of the internal FIDs. The descriptor allows to either toggle the existing value of the FID
or to set it. Note that clients wait for changes in FID value to generate the new frame so if the value is set
to the current value no event will occur for the client. Word 0 and Word 2 are reserved.
Table 1-103. Toggle LM Field Field Descriptions (Word - 2)
Bit
Name
Description
31-6
Reserved
Reserved
5-4
FID2 CTL
This field controls the behavior of FID2
0h: FID2 remains unchanged
1h: FID2 toggles
2h: FID2 becomes 0
3h: FID2 becomes 1
3-2
FID1 CTL
This field controls the behavior of FID1
0h: FID1 remains unchanged
1h: FID1 toggles
2h: FID1 becomes 0
3h: FID1 becomes 1
1-0
FID0 CTL
This field controls the behavior of FID0
0h: FID0 remains unchanged
1h: FID0 toggles
2h: FID0 becomes 0
3h: FID0 becomes 1
Table 1-104. Toggle LM Field Field Descriptions (Word - 3)
Bit
Field
Description
31-27
Packet Type
Host Packet Descriptor type = 0xC
26-4
Reserved
This field controls the behavior of FID2
3-0
Control
Control type = 9h