PAL/NTSC/SECAM video decoder with adaptive PAL/NTSC comb ...

Philips Semiconductors
PAL/NTSC/SECAM video decoder with adaptive PAL/NTSC
comb filter, VBI-data slicer and high performance scaler
Preliminary specification
SAA7114H
handbook, full pagewidth
6
V
3
(dB)
0
−3
−6
−9
−12
−15
−18
−21
−24
−27
−30
−33
−36
(1) PFUV[1:0] = 01.
−39
(2) PFUV[1:0] = 10.
(3) PFUV[1:0] = 11. −42
(3)
(2)
(1)
MHB544
0 0.025 0.05 0.075 0.1 0.125 0.15 0.175 0.2 0.225 0.25
f_sig/f_clock
Fig.25 Chrominance prefilter characteristic.
handbook, full pagewidth
V
(dB)
6
3
0
−3
−6
−9
−12
−15
−18
−21
−24
−27
−30
−33
−36
−39
(5)
(4)
(3)
MHB545
−42
0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5
1
f_sig/f_clock
XC2_1 = 0; Zero’s at f = n × with XACL = (1), (2), (3), (4) or (5)
XACL ------------------------ + 1
(2)
Fig.26 Examples for prescaler filter characteristics: effect of increasing XACL[5:0].
(1)
2000 Mar 15 44