S5D0127X01 Datasheet, PDF (33/96 Pages) Samsung semiconductor – MULTISTANDARD VIDEO DECODER/SCALER

S5D0127X01 Data Sheet
MULTIMEDIA VIDEO
1.7. VBI DATA PROCESSING
The S5D0127X01 VBI data processing is very flexible in that it supports VBI data formats of:
• Closed Caption Line 21 Data Service (EIA-608)
• 525 line / 60Hz Teletext systems B,C,D (ITU-R BT.653-2)
• 625 line / 50Hz Teletext systems A,B,C,D (ITU-R BT.653-2)
• Copy Generation Management System (EIA/IS-702)
• Wide Screen Signalling (WSS ETS 300 294).
Note that the SMPTE data slicing is removed for the S5D0127X01 and replaced with the WSS / CGMS processing.
This data can be accessed from the part via four different methods:
• Enabling the “Raw un-processed 27MHz” Y ADC samples to be output for the appropriate lines in place of the
normal YUV data.
• Slicing the data (creating a clock and comparing the data to a threshold at the clock) and bursting this data out
on Y output.
• Reading the sliced data from two internal registers via the IIC bus.
• Via 2 external pins that output the sliced VBI data and the time at which the slice is valid.
A simplified block diagram for the VBI section is shown in Figure 30.
From Y ADC
SLICER
ODD
ODDEN
EVENEN
ODDOS
VBIL
MODE
CTRL
LOGIC
Normal
Decoded Y Data
FRAME
ALIGNMENT
TTFRAM
FIFO
CLOCK
GENERATOR
PIXSEL
IFMT
SECAM
MUX /
VBI
Format
8 Y[7:0]
VYFMT
VBINSRT
CCEN
CCDATA
Figure 30. VBI Decoder Block Diagram
ELECTRONICS
Modified on May/04/2000
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