Philips Semiconductors
Preliminary specification
PAL/NTSC/SECAM video decoder with adaptive PAL/NTSC
comb filter, VBI-data slicer and high performance scaler
SAA7114H
15.2.10 SUBADDRESS 09H
Table 46 Luminance control; 09H[7:0]
BIT
D7
DESCRIPTION
SYMBOL VALUE
FUNCTION
chrominance trap/comb filter
bypass
BYPS
0
chrominance trap or luminance comb filter active;
default for CVBS mode
1
chrominance trap or luminance comb filter bypassed;
default for S-video mode
D6
D5
adaptive luminance comb filter YCOMB
0
1
0
1
disabled (= chrominance trap enabled, if BYPS = 0)
active, if BYPS = 0
processing delay in non comb
filter mode
LDEL
processing delay is equal to internal pipelining delay
one (NTSC standards) or two (PAL standards) video
lines additional processing delay
D4
remodulation bandwidth for
luminance; see Figs 12 to 15
LUBW
0
1
small remodulation bandwidth
(narrow chroma notch
large remodulation bandwidth
(wider chroma notch smaller luminance bandwidth)
higher luminance bandwidth)
D[3:0] sharpness control, luminance
filter characteristic; see Fig.16
LUFI[3:0]
0001 resolution enhancement filter 8.0 dB at 4.1 MHz
0010 resolution enhancement filter 6.8 dB at 4.1 MHz
0011 resolution enhancement filter 5.1 dB at 4.1 MHz
0100 resolution enhancement filter 4.1 dB at 4.1 MHz
0101 resolution enhancement filter 3.0 dB at 4.1 MHz
0110 resolution enhancement filter 2.3 dB at 4.1 MHz
0111 resolution enhancement filter 1.6 dB at 4.1 MHz
0000 plain
1000 low-pass filter 2 dB at 4.1 MHz
1001 low-pass filter 3 dB at 4.1 MHz
1010 low-pass filter 3 dB at 3.3 MHz; 4 dB at 4.1 MHz
1011 low-pass filter 3 dB at 2.6 MHz; 8 dB at 4.1 MHz
1100 low-pass filter 3 dB at 2.4 MHz; 14 dB at 4.1 MHz
1101 low-pass filter 3 dB at 2.2 MHz; notch at 3.4 MHz
1110 low-pass filter 3 dB at 1.9 MHz; notch at 3.0 MHz
1111 low-pass filter 3 dB at 1.7 MHz; notch at 2.5 MHz
15.2.11 SUBADDRESS 0AH
Table 47 Luminance brightness control: decoder part; 0AH[7:0]
CONTROL BITS D7 TO D0
OFFSET
DBRI7
DBRI6
DBRI5
DBRI4
DBRI3
DBRI2
DBRI1
DBRI0
255 (bright)
128 (ITU level)
0 (dark)
1
1
0
1
0
0
1
0
0
1
0
0
1
0
0
1
0
0
1
0
0
1
0
0
2000 Mar 15
95
NXP [ NXP ]
