![background image](http://html1.mh-extra.com/html/texas-instruments/dm38x-davinci/dm38x-davinci_user-manual_1097067093.webp)
Internal Modules
93
SPRUHI7A – December 2012 – Revised June 2016
Copyright © 2012–2016, Texas Instruments Incorporated
High-Definition Video Processing Subsystem (HDVPSS)
Table 1-30. Region Scaler Attributes 10 (continued)
Attribute
Bits
Description
coefv3_p4
[73:64]
Coefficient for Vertical TAP 3 Phase 4
Reserved
[79:74]
reserved
coefv3_p5
[89:80]
Coefficient for Vertical TAP 3 Phase 5
Reserved
[95:90]
reserved
coefv3_p6
[105:96]
Coefficient for Vertical TAP 3 Phase 6
Reserved
[111:106]
reserved
coefv3_p7
[121:112]
Coefficient for Vertical TAP 3 Phase 7
Reserved
[127:122]
reserved
Table 1-31. Region Scaler Attributes 11
Attribute
Bits
Description
countvalvert
[14:0]
Numerator value for fractional counter
countval / 248
coefv0_p0
Reserved
[15]
Reserved
fineoffsetvert
[30:16]
Count offset for start of line
Reserved
[127:31]
Reserved
1.2.5.2.5 VPDMA Configuration
VPDMA needs to be setup to configure the GRPX module and input data transfer. The initialization
sequence for each frame (assuming frame/region attributes change for every frame) should be as follows:
•
Frame Attribute Configuration Descriptor
•
Region Scalar Co-efficient/Attribute Configuration Descriptor (if required)
•
Region Look-Up table Configuration Descriptor (if required)
•
Region Stencil Data Descriptor (if required)
•
Region Data Descriptor (different from regular data descriptor and it configures region attributes also)
Some of the previous configuration descriptors can be combined into single configuration descriptor (using
class 0 type).
If the configuration in any of the previous configuration descriptors is not changed from region to region or
frame to frame, it is not required to set up those configuration descriptors each time in the VPDMA LIST.
The configuration of descriptors is explained and illustrated in the
VPDMA
chapter.