saa7114 NXP Semiconductors, saa7114 Datasheet - Page 34
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saa7114
Manufacturer Part Number
saa7114
Description
Pal/ntsc/secam Video Decoder With Adaptive Pal/ntsc Combfilter, Vbi-data Slicer And High Performance Scaler
Manufacturer
NXP Semiconductors
Datasheet
1.SAA7114.pdf
(144 pages)
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Philips Semiconductors
SAA7114_3
Product data sheet
8.2 Decoder output formatter
The output interface block of the decoder part contains the ITU 656 formatter for the
expansion port data output XPD7 to XPD0 (for a detailed description see
and the control circuit for the signals needed for the internal paths to the scaler and data
slicer part. It also controls the selection of the reference signals for the RT port (RTCO,
RTS0 and RTS1) and the expansion port (XRH, XRV and XDQ).
The generation of the decoder data type control signals SET_RAW and SET VBI is also
done within this block. These signals are decoded from the requested data type for the
scaler input and/or the data slicer, selectable by the control registers LCR2 to LCR24 (see
also
For each LCR value from 2 to 23 the data type can be programmed individually;
LCR2 to LCR23 refer to line numbers. The selection in LCR24 values is valid for the rest
of the corresponding field. The upper nibble contains the value for field 1 (odd), the lower
nibble for field 2 (even). The relationship between LCR values and line numbers can be
adjusted via VOFF8 to VOFF0, located in subaddresses 5Bh (bit D4) and 5Ah
(bits D7 to D0) and FOFF subaddress 5Bh (bit D7). The recommended values are
VOFF[8:0] = 03h for 50 Hz sources (with FOFF = 0) and VOFF[8:0] = 06h for 60 Hz
sources (with FOFF = 1), to accommodate line number conventions as used for PAL,
SECAM and NTSC standards; see
Table 7:
Data type number Data type
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Section
Data formats at decoder output
10; subaddresses 41h to 57h).
teletext EuroWST, CCST
European closed caption
Video Programming Service (VPS)
wide screen signalling bits
US teletext (WST)
US closed caption (line 21)
video component signal, VBI region
CVBS data
teletext
VITC/EBU time codes (Europe)
VITC/SMPTE time codes (USA)
reserved
US NABTS
MOJI (Japanese)
Japanese format switch (L20/22)
video component signal, active video region Y-C
Rev. 03 — 17 January 2006
Figure 22
and
Figure
PAL/NTSC/SECAM video decoder
23.
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Decoder output data format
raw
raw
raw
raw
raw
raw
Y-C
raw
raw
raw
raw
raw
raw
raw
raw
B
B
-C
-C
R
R
4 : 2 : 2
4 : 2 : 2
SAA7114
Section
9.4.1)
34 of 144