msm7652 Oki Semiconductor, msm7652 Datasheet - Page 14

• Manufacturer Part Number: msm7652
• Description: Ntsc/pal Digital Video Encoder
• Manufacturer: Oki Semiconductor

MSM7652
VALID DATA RANGE
According to the ITU Rec.656 standard, the pixel data immediately from SAV (4th word) to a
fixed value before EVA is valid.
The following figure shows the relationship between the input data at the CCIR Rec.656 format
and the sync, luminance, chrominance signals which are processed inside the encoder.
14
Note) The values in parenthesis indicate values in PAL mode.
ITU Rec.656 standard input data
Sync signal VSYNC_L (0H)
generated by input signal
Sync signal VSYNC_L (1/2)
generated by input signal
Sync signal HSYNC_L generated
by input data
Sync signal BLANK_L generated
by input data
BLANK_L internally generated to
assure the horizontal and vertical
periods
Luminance signal separated from
input data
Chrominance signal separated
from input data
Composite signal
Relationship between input data and sync signal, luminance signal, chrominance signals
9Tclkx1 (16Tclkx1)
4Tclkx2
11Tclkx1 (4Tclkx1)
63Tclkx1 (63Tclkx1) <Normal>
67Tclkx1 (67Tclkx1) <Colorstripe>
136Tclkx1 (146Tclkx1)
8'h10
8'h80
127Tclkx1 (142Tclkx1)
127Tclkx1 (142Tclkx1)
1716Tclkx2 (NTSC)/1728clkx2 (PAL)
4Tclkx2
Cb0, Y00, Cr0, Y01, Cb1, Y10, Cr1, Y11....
Y00
Cb0
4Tclkx1
(4Tclkx1)
1H
Y01 Y10 Y11
Cr0 Cb1 Cr1
1440T (NTSC/PAL)
711Tclkx1 (702Tclkx1)
711Tclkx1 (702Tclkx1)
1/2H
¡ Semiconductor
20Tclkx1 (20Tclkx1)
20Tclkx1 (20Tclkx1)
8'h10
8'h80