msm7661b Oki Semiconductor, msm7661b Datasheet - Page 15

• Manufacturer Part Number: msm7661b
• Description: Ntsc/pal Digital Video Decoder
• Manufacturer: Oki Semiconductor

¡ Semiconductor
5.
The Epilogue Block outputs UV signals from the chrominance block and Y signals from the
luminance block in the format based on the signal obtained by setting of the control register.
In this block, the following modes can be selected.
1) Display of blue back when synchronization fails.
2) Output modes
3) Selection of 8-bit chroma signal output format
4) Output pin enable select
5) Multiplex signal detect level adjustment
The levels to detect multiplexed signals sent during the vertical blanking period are configured
to be variable. The binary values after input signals are A-to-D converted are employed as the
levels to detect multiplexed signals, and the levels are set in eight steps with respect to the SYNC
tip level.
6) Various modes detection
7) Output signal phase control
video in
OFF
ON*
2.1) ITUR 601 mode
2.2) YCbCr 8-bit multiplex output mode
Offset binary*
2's Complement
High impedance
Output enable*
NTSC/PAL detect mode*
Multiplex signal detect mode
HSYNC synchronization detect mode
Output signal Y/CbCr format select
The chrominance signal (U, V component) outputs Cb and Cr data to the C pin in an
output format described later.
This mode does not include SAV and EAV.
Epilogue Block
YCbCr
YCbCr
Detect level
OMR [5:3]
80 to 136
4 : 2 : 2*
4 : 1 : 1
MSM7661B
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