Internal Modules
196
SPRUHI7A – December 2012 – Revised June 2016
Copyright © 2012–2016, Texas Instruments Incorporated
High-Definition Video Processing Subsystem (HDVPSS)
1.2.11.2.3.3 Vertical Scaler Configuration Parameters
Table 1-67. Vertical Scaler Configuration Parameters
Parameter
Bits
Typical
Controls
Description
interlace_in
1
Frame or Field
0 = progressive, 1 = interlace
interlace_out
1
0 = progressive 1 = interlace
invt_fid
1
Invert field ID input
use_rav
1
Scaler Mode
0 = use polyphase scaler
1 = use running average scaler
row_acc_inc
11.16
Bilinear & Polyphase
Scalers
round(2^16*(srcH)/(tarH))
row_acc_offset
11.16
0
Initial row accumulator value for progressive frame
and top field
row_acc_offset_b
11.16
0
Initial row accumulator value for bottom field
ev_thr
3.2
0xC
Bilinear Scaler
Edge vector threshold used in luma soft switch
delta_ev_thr
4
1
Range of luma soft switch based on edge vector
delta_luma_thr
4
4
Range for luma soft switch based on pixel
differences (max limit = 8)
delta_chroma_thr
4
4
Range for chroma soft switch based on pixel
differences (max limit = 8)
chroma_intp_thr
10
64
Threshold used in chroma soft switch based on
pixel differences
luma polyphase filter
coefficients
s1.11
32 phases × 7 taps × 13 bits array (interpolation
only: scale factor = 1)
chroma polyphase filter
coefficients
s1.11
32 phases × 7 taps × 13 bits array (interpolation
only: scale factor = 1)
sc_factor_rav
10
Running Average Scaler
Scale factor = round(1024 × tarH/srcH)
row_acc_init_rav
10
Initial row accumulator value for progressive frame
and top field
row_acc_init_rav_b
10
Initial row accumulator value for bottom field
luma polyphase filter
coefficients
s1.11
Polyphase Scaler
32 phases × 5 taps × 13 bits array (dependent on
scale factor)
chroma polyphase filter
coefficients
s1.11
32 phases × 5 taps × 13 bits array (dependent on
scale factor)
Note:
Bi-linear scaler is not present in this device.