S5D0127X01 Datasheet, PDF (34/96 Pages) Samsung semiconductor – MULTISTANDARD VIDEO DECODER/SCALER

S5D0127X01 Data Sheet
MULTIMEDIA VIDEO
Table 7 lists all the video standards that the VBI data slicer supports. Some of these modes are auto detected
based on the current video input standard,
Table 7: Video Standards Supported by VBI Decoder
Mode
60Hz Teletext system C
(NTSC / Intercast)
50Hz Teletext system B
(PAL)
50Hz Teletext system A
(SECAM)
60Hz Teletext system B
50Hz Teletext system C
50Hz Teletext system D
60Hz Teletext system D
Closed Caption NTSC 601
CGMS (NTSC 60Hz)
WSS (PAL 50Hz)
Value of Chip Detec- Required Values of Characteristics of the Stan-
tion Bits
Registers to enable
dard
Standard
Format SECAM VBIL0-15 TT_SYS Data Rate Number of
(MHz) Bits (bytes)
1
0
2
0 5.727272 272 (34)
0
0
2
0 6.9375
344 (43)
0
1
2
0 6.203125 304 (38)
0
1
2
1 5.727272 280 (35)
0
1
2
2 5.734375 272 (34)
0
1
2
3 5.6457875 280 (35)
0
1
2
3 5.727272 280 (35)
N/A
N/A
1
N/A 0.5035
16 (2)
1
N/A
3
N/A 0.447443 20 (3)
0
N/A
3
N/A 5.0000
84
Configuring the VBI processing consists of many different steps which are individually explained below.
1.7.1. Enabling the VBI Processor
The VBI processor can be enabled independently for the ODD or EVEN fields with the ODDEN and EVENEN bits.
Some VBI data is only present on line in 1 of the 2 fields, These independent field enables allow control of the total
VBI data output from the chip. These controls apply to all VBI Lines, Thus it is not possible to enable Closed
caption line 21 for the Even field and line 19 Teletext for both the odd and even field.
1.7.2. Selecting the Type of Output Data
As previously mentioned, there are 4 different ways the VBI data can be extracted. Three of these are selected as
shown in the table, the fourth method (CCEN and CCDAT pins) is always available if VBI processing is enabled.
ELECTRONICS
Modified on May/04/2000
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