msm7664 Oki Semiconductor, msm7664 Datasheet - Page 24

• Manufacturer Part Number: msm7664
• Description: Ntsc/pal Digital Video Decoder
• Manufacturer: Oki Semiconductor

¡ Semiconductor
Input Signal Level
The figure below shows the recommended range of the input signal, received in an 8-bit straight
binary format.
The above input conditions are ideal. Because analog signals are normally input at different
levels, the exact settings described above are difficult to achieve. While maintaining the ratio of
White Peak (100%)/SYNC = 100IRE/40IRE (NTSC), if the input signal is set within the A/D
converter's voltage range/the Y digital output will be output by digital AGC operation with the
pedestal position set at the black level (16) and the white peak position (100%) set at the peak level
(235) even if the peak level does not reach 196 (200 – 4).
(PAL:63)
NTSC:60
255
200
4
0
NTSC/PAL; CVBS[7:0] input range
Iuminance
sync
input black level
input sync-tip level
246
13
chrominance
+DC
reserved
PEDL7664-01
MSM7664
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