S5D2650 Samsung Semiconductor, Inc., S5D2650 Datasheet - Page 33

• Manufacturer Part Number: S5D2650
• Description: Multistandard Video Decoder/scaler
• Manufacturer: Samsung Semiconductor, Inc.

S5D2650 Data Sheet
1.7. VBI DATA PROCESSING
The S5D2650 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 S5D2650 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
• Slicing the data (creating a clock and comparing the data to a threshold at the clock) and bursting this data out
• Reading the sliced data from two internal registers via the IIC bus.
• Via 2 external pins that output the sliced VBI data(CCDAT) and the time at which the slice is valid(CCEN).
A simplified block diagram for the VBI section is shown in Figure 30.
normal YUV data.
on Y output.
From Y ADC
ODD
ODDEN
EVENEN
ODDOS
VBIL
ELECTRONICS
MODE
CTRL
LOGIC
SLICER
Figure 30.
PIXSEL
IFMT
SECAM
CLOCK
GENERATOR
VBI Decoder Block Diagram
TTFRAM
FRAME
ALIGNMENT
Normal
Decoded Y Data
FIFO
VYFMT
VBINSRT
MUX /
VBI
Format
MULTIMEDIA VIDEO
8
CCDATA
CCEN
Y[7:0]
PAGE 33 OF 95
7/18/03