SAA7118 Datasheet, PDF (123/169 Pages) NXP Semiconductors – Multistandard video decoder with adaptive comb filter and component video input

Philips Semiconductors
Multistandard video decoder with adaptive
comb filter and component video input
Preliminary specification
SAA7118
15.2.15 SUBADDRESS 0EH
Table 52 Chrominance control 1; 0EH[7:0]
BIT
D7
D[6:4]
D[6:4]
D3
D2
DESCRIPTION
clear DTO
SYMBOL
CDTO
colour standard selection CSTD[2:0]
in non AUTO mode
colour standard selection
in AUTO mode (AUTO
mode is selected, if either
AUTO0 or AUTO1 is set;
see below)
CSTD[2:0]
disable chrominance
vertical filter and PAL
phase error correction
DCVF
fast colour time constant FCTC
VALUE
0
1
000
001
010
011
100
101
110
111
000
001
010
011
100
101
110
111
0
1
0
1
FUNCTION
50 Hz/625 LINES
60 Hz/525 LINES
disabled
Every time CDTO is set, the internal subcarrier DTO
phase is reset to 0° and the RTCO output generates a
logic 0 at time slot 68 (see document “RTC Functional
Description”, available on request). So an identical
subcarrier phase can be generated by an external device
(e.g. an encoder); if a DTO reset is programmed via
CDTO it has always to be executed in the following way:
1. Set CDTO = 0
2. Set CDTO = 1.
PAL BGDHI (4.43 MHz) NTSC M (3.58 MHz)
NTSC 4.43 (50 Hz)
PAL 4.43 (60 Hz)
Combination-PAL N
(3.58 MHz)
NTSC 4.43 (60 Hz)
NTSC N (3.58 MHz) PAL M (3.58 MHz)
reserved
NTSC-Japan (3.58 MHz)
SECAM
reserved
reserved; do not use
reserved; do not use
preferred standard⁽¹⁾ is preferred standard⁽¹⁾ is
PAL BGDHI (4.43 MHz) NTSC M (3.58 MHz)
reserved; do not use
reserved; do not use
reserved; do not use
preferred standard⁽¹⁾ is preferred standard⁽¹⁾ is
PAL BGDHI (4.43 MHz) NTSC-Japan (3.58 MHz, no
7.5 IRE offset)
preferred standard⁽¹⁾ is preferred standard⁽¹⁾ is
SECAM
NTSC M (3.58 MHz)
reserved; do not use
reserved; do not use
chrominance vertical filter and PAL phase error
correction on (during active video lines)
chrominance vertical filter and PAL phase error
correction permanently off
nominal time constant
fast time constant for special applications (high quality
input source, fast chroma lock required, automatic
standard detection off)
2001 May 30
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