1998 May 15 63
Philips Semiconductors Product specification
Enhanced Video Input Processor (EVIP) SAA7111A
18.4 Chrominance filter curves
19 I
2
C-BUS START SET-UP
• The given values force the following behaviour of the SAA7111A:
– The analog input AI11 expects a signal in CVBS format; analog anti-alias filter active
– Automatic field detection
– YUV 4:2:2 16-bit output format enabled
– Outputs HS, HREF, VREF and VS active
– Contrast, brightness and saturation control in accordance with CCIR standards
– Chrominance processing with nominal bandwidth (800 kHz).
Fig.51 Chrominance filter.
(1) Transfer characteristics of the chrominance low-pass dependent on CHBW[1 : 0] settings. CHBW [1 : 0] = 00; (2) CHBW [1 : 0] = 01; (3)
CHBW [1 : 0] = 10; (4) CHBW [1 : 0] = 11.
handbook, full pagewidth
2.7
6
0
−6
−12
−18
−24
−30
−36
−42
−48
−54
0 0.54 1.08 1.62 2,16
MGD147
f
(MHz)
V
(dB)
(1)
(2)
(3)
(4)
(4)
(1)
(3)
(2)
