Philips Semiconductors
Preliminary specification
PAL/NTSC/SECAM video decoder with adaptive PAL/NTSC
comb filter, VBI-data slicer and high performance scaler
SAA7114H
16.3 Data slicer and data type control part
The given values force the following behaviour of the SAA7114H 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 129 Data slicer start set-up values
SUB
ADDRESS
(HEX)
START VALUES
FUNCTION
slicer control 1
BIT NAME(1)
7 6 5 4 3 2 1 0 HEX
40
X, HAM_N, FCE, HUNT_N, X, X, X, X 0 1 0 0 0 0 0 0 00
41 to 53 line control register 2 to 20
54 line control register 21
55 to 57 line control register 22 to 24
LCRn_7 to LCRn_0 (n = 2 to 20)
LCR21_7 to LCR21_0
LCRn_7 to LCRn_0 (n = 22 to 24)
FC7 to FC0
1 1 1 1 1 1 1 1 FF
0 1 0 1 1 1 1 1 5F
1 1 1 1 1 1 1 1 FF
0 0 0 0 0 0 0 0 00
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)
58
59
5A
5B
programmable framing code
horizontal offset for slicer
vertical offset for slicer
HOFF7 to HOFF0
VOFF7 to VOFF0
field offset and MSBs for
FOFF, RECODE, X, VOFF8, X,
HOFF10 to HOFF8
horizontal and vertical offset
5C
5D
reserved
X, X, X, X, X, X, X, X
0 0 0 0 0 0 0 0 00
0 0 1 1 1 1 1 0 3E
header and data identification
code control
FVREF, X, DID5 to DID0
5E
5F
60
61
62
sliced data identification code
reserved
X, X, SDID5 to SDID0
0 0 0 0 0 0 0 0 00
0 0 0 0 0 0 0 0 00
read-only register
X, X, X, X, X, X, X, X
slicer status byte 1
slicer status byte 2
−, FC8V, FC7V, VPSV, PPV, CCV, −, −
−, −, F21_N, LN8 to LN4
LN3 to LN0, DT3 to DT0
read-only register
read-only register
Notes
1. All X values must be set to LOW.
2. Changes for 50 Hz/625 line systems: subaddress 5AH = 03H and subaddress 5BH = 03H.
2000 Mar 15
130
NXP [ NXP ]
