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Registers
795
SPRUHI7A – December 2012 – Revised June 2016
Copyright © 2012–2016, Texas Instruments Incorporated
High-Definition Video Processing Subsystem (HDVPSS)
Table 1-389. SC_M_cfg_sc0 Register Field Descriptions (continued)
Bit
Field
Type
Reset
Description
7
CFG_DCM_2X
R/W
0h
This parameter is used by horizontal scaling.
0: the 2X decimation filter is disabled
1: the 2X decimation filter is enabled
Note:
(1) Either 2X or 4X can be enabled, but they cannot be enabled
simultaneously.
(2) This register is only set to 1 when it makes sense to do so.
Typically, it is used when (0.25 < horizontal scale ratio < 0.5).
(3) This register is DON’T CARE when cfg_auto_hs = 1.
6
CFG_AUTO_HS
R/W
0h
This parameter is used by horizontal scaling.
0: the cfg_dcm_2x and cfg_dcm_4x bits will enable appropriate
decimation filters
1: HW will decide whether up-scaling or down-scaling is required
based on horizontal scaling ratio (SR).
SR > 0.5 : horizontal polyphase filter is enabled, all decimation filters
are disabled
SR = 0.5 : dcm_2x is enabled, horizontal polyphase filter is enabled
or disabled based on cfg_hp_bypass
0.5 > SR > 0.25 : dcm_2x and horizontal polyphase filter both are
enabled
SR = 0.25 : dcm_4x is enabled, horizontal polyphase filter is enabled
or disabled based on cfg_hp_bypass
0.25 > SR > 0.125 : dcm_4x and horizontal polyphase filter are both
enabled
SR <= 0.125 : Functionally supported, but not recommended in auto
mode for image quality concerns
5
Reserved
R
0h
4
CFG_USE_RAV
R/W
0h
This parameter is used by vertical scaling.
0: Poly-phase filter will be used for the vertical scaling
1: Running average filter will be used for the vertical scaling (down
scaling only)
3
CFG_INVT_FID
R/W
0h
This parameter inverts the polarity of the incoming FID bit before
applying to Scaler function.
0: treat incoming FID=0 to be bottom field and FID=1 to be top field
data
1: treat incoming FID=1 to be bottom field and FID=0 to be top field
data
Incoming FID is the FID value programmed in the VPDMA
descriptor.
For this device, CFG_INVT_FID should be set to 0x1 always.
2
CFG_SC_BYPASS
R/W
0h
This parameter is a general purpose.
0: Scaling module will engaged
1: Scaling module will be bypassed
1
CFG_LINEAR
R/W
0h
This parameter is used by horizontal scaling.
0: Anamorphic scaling...
1: Linear scaling
0
CFG_INTERLACE_O
R/W
0h
This parameter is used by vertical scaling.
0: The output format of SC is progressive
1: The output format of SC is interlace