參數(shù)資料
型號(hào): S5D0127X01
廠商: SAMSUNG SEMICONDUCTOR CO. LTD.
英文描述: MULTISTANDARD VIDEO DECODER/SCALER
中文描述: 多標(biāo)準(zhǔn)視頻解碼器/倍線器
文件頁(yè)數(shù): 34/96頁(yè)
文件大?。?/td> 1509K
代理商: S5D0127X01
ELECTRONICS
S5D0127X01 Data Sheet
MULTIMEDIA VIDEO
PAGE 34 OF 96
Modified on May/04/2000
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,
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.
Table 7: Video Standards Supported by VBI Decoder
Mode
Value of Chip Detec-
tion Bits
Required Values of
Registers to enable
Standard
VBIL0-15 TT_SYS
Characteristics of the Stan-
dard
Format
SECAM
Data Rate
(MHz)
5.727272
Number of
Bits (bytes)
272 (34)
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)
1
0
2
0
0
0
2
0
6.9375
344 (43)
0
1
2
0
6.203125
304 (38)
0
0
0
0
1
1
1
1
2
2
2
2
1
3
3
1
2
3
3
5.727272
5.734375
5.6457875
5.727272
0.5035
0.447443
5.0000
280 (35)
272 (34)
280 (35)
280 (35)
16 (2)
20 (3)
84
N/A
1
0
N/A
N/A
N/A
N/A
N/A
N/A
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