SAA7120H Datasheet, PDF (16/36 Pages) NXP Semiconductors – Digital video encoder

Philips Semiconductors
Digital video encoder
Product specification
SAA7120H; SAA7121H
Table 18 Subaddress 61H
DATA BYTE
FISE
PAL
SCBW
LOGIC
LEVEL
0
1
0
1
0
1
YGS
0
1
INPI
0
1
DOWN
0
1
DESCRIPTION
864 total pixel clocks per line; default after reset
858 total pixel clocks per line
NTSC encoding (non-alternating V component)
PAL encoding (alternating V component); default after reset
enlarged bandwidth for chrominance encoding (for overall transfer characteristic of
chrominance in baseband representation see Figs 3 and 4)
standard bandwidth for chrominance encoding (for overall transfer characteristic of
chrominance in baseband representation see Figs 3 and 4); default after reset
luminance gain for white − black 100 IRE; default after reset
luminance gain for white − black 92.5 IRE including 7.5 IRE set-up of black
PAL switch phase is nominal; default after reset
PAL switch phase is inverted compared to nominal if RTC is enabled; see Table 19
DACs for CVBS, Y and C in normal operational mode; default after reset
DACs for CVBS, Y and C forced to lowest output voltage
Table 19 Subaddress 62H
DATA BYTE
RTCE
LOGIC
LEVEL
0
1
DESCRIPTION
no real-time control of generated subcarrier frequency; default after reset
real-time control of generated subcarrier frequency through SAA7151B or SAA7111;
for timing see Fig.9
Table 20 Subaddress 62H
DATA BYTE
DESCRIPTION
BSTA
amplitude of colour burst; input
representation in accordance
with “CCIR 601”
CONDITIONS
REMARKS
white-to-black = 92.5 IRE;
recommended value:
burst = 40 IRE; NTSC encoding BSTA = 63 (3FH)
BSTA = 0 to 2.02 × nominal
white-to-black = 92.5 IRE;
recommended value:
burst = 40 IRE; PAL encoding BSTA = 45 (2DH)
BSTA = 0 to 2.82 × nominal
white-to-black = 100 IRE;
recommended value:
burst = 43 IRE; NTSC encoding BSTA = 67 (43H)
BSTA = 0 to 1.90 × nominal
white-to-black = 100 IRE;
burst = 43 IRE; PAL encoding
BSTA = 0 to 3.02 × nominal
recommended value:
BSTA = 47 (2FH); default after
reset
2002 Oct 11
16