SAA7118 Datasheet, PDF (161/169 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
16.4 Data slicer and data type control part
The given values force the following behaviour of the SAA7118 VBI-data slicer part:
• Closed captioning data are expected at line 21 of field 1 (60 Hz/525 line system)
• All other lines are processed as active video
• Sliced data are framed by ITU 656 like SAV/EAV sequence (DID[5:0] = 3EH ⇒ MSB of SAV/EAV = 1).
Table 142 Data slicer start set-up values
SUB
ADDRESS
(HEX)
REGISTER FUNCTION
BIT NAME⁽¹⁾
START VALUES
7 6 5 4 3 2 1 0 HEX
40
slicer control 1
X, HAM_N, FCE, HUNT_N, X, X, X, 0 1 0 0 0 0 0 0 40
X
41 to 53 line control register 2 to 20 LCRn_7 to LCRn_0 (n = 2 to 20) 1 1 1 1 1 1 1 1 FF
54
line control register 21
LCR21_7 to LCR21_0
0 1 0 1 1 1 1 1 5F
55 to 57 line control register 22 to 24 LCRn_7 to LCRn_0 (n = 22 to 24) 1 1 1 1 1 1 1 1 FF
58
programmable framing code FC7 to FC0
0 0 0 0 0 0 0 0 00
59
horizontal offset for slicer
HOFF7 to HOFF0
5A
vertical offset for slicer
VOFF7 to VOFF0
5B
field offset and MSBs for
FOFF, RECODE, X, VOFF8, X,
horizontal and vertical offset HOFF10 to HOFF8
0 1 0 0 0 1 1 1 47
0 0 0 0 0 1 1 0 06⁽²⁾
1 0 0 0 0 0 1 1 83⁽²⁾
5C
reserved
X, X, X, X, X, X, X, X
0 0 0 0 0 0 0 0 00
5D
header and data
FVREF, X, DID5 to DID0
identification code control
0 0 1 1 1 1 1 0 3E
5E
sliced data identification code X, X, SDID5 to SDID0
0 0 0 0 0 0 0 0 00
5F
reserved
X, X, X, X, X, X, X, X
0 0 0 0 0 0 0 0 00
60
slicer status byte 0
61
slicer status byte 1
−, FC8V, FC7V, VPSV, PPV, CCV,
−, −
−, −, F21_N, LN8 to LN4
read-only register
read-only register
62
slicer status byte 2
LN3 to LN0, DT3 to DT0
read-only register
Notes
1. All X values must be set to logic 0.
2. Changes for 50 Hz/625 line systems: subaddress 5AH = 03H and subaddress 5BH = 03H.
2001 May 30
161