Internal Modules
200
SPRUHI7A – December 2012 – Revised June 2016
Copyright © 2012–2016, Texas Instruments Incorporated
High-Definition Video Processing Subsystem (HDVPSS)
1.2.11.2.4.4 Horizontal Scaler Configuration Registers
Table 1-68. Horizontal Scaler Related Parameter Configuration
Parameter
Bits
Controls
Description
srcW
11
Image
Dimension
Source Width
tarW
11
Target Width
linear
1
Scaler Mode
If (linear == 1) srcWi=srcW and tarWi=tarW
Else srcWi=srcH and tarWi=tarH
sc_bypass
1
0 = enable scaler, 1 = bypass scaler
auto_hs
1
Auto_hs
dcm_2x
dcm_4x
Definition
0
0
0
Polyphase scaling
dcm_2x
1
0
0
1
Horizontal decimation by 4 and
polyphase scaling
0
1
0
Horizontal decimation by 4 and
polyphase scaling
dcm_4x
1
-
-
Automatic (selection of
decimation filter is automatic)
Table 1-69. Horizontal Decimation Selection
Scale Factor
Decimation
< ¼
By 4
< 1/4
By 4
== 1/4
By 4
1/4 < and < 1/2
By 2
1/2
By 2
1/2 < and < 1
Bypassed
1
Bypassed
> 1
Bypassed