ml86v7668 Oki Semiconductor, ml86v7668 Datasheet - Page 25

• Manufacturer Part Number: ml86v7668
• Description: Ntsc/pal/secam Digital Video Decoder
• Manufacturer: Oki Semiconductor

ITU-R BT.656-4 output:
Output is performed based on BT.656 of the ITU standards. Since sync signal information (SAV, EAV) is
multiplexed with video data, for the interface that complies with BT.656, data can be transferred by connecting to
8-bit data lines, without connecting to the sync signal.
Note: When operating in the asynchronous sampling mode, digital lines 1716T (NTSC,525) and 1728T (PAL,
OKI Semiconductor
HSYNC_L
HVALID
Y[7:0]
625) will change due to the sampling error.
In the FIFO mode, the pixels count correction function ensures that there is no fluctuation in the pixel count
between active lines, but the line immediately following the fall of VVALID will change due to the FIFO
reset.
In particular, when non-standard signals such as VTR signals are input, the line immediately following the
fall of VVALID will vary greatly in accordance with the degree of the instability of the input signal. Where
the sampling error is large, the line will change immediately before the fall of VVALID.
In some cases where the line count increases or decreases with respect to the reference, such as
non-standard signals, EAV and SAV may not be guaranteed.
The data in the blanking period is masked, but the Y data can be output.
4T
Digital line blanking
276T(NTSC 525)
288T(PAL 625)
H blank
Cb0 Y0 Cr0 Y1 Cb2 Y2 Cr2 Y3 Cb4 Y4 ------- Cr718 Y719
4T
Digital line
Multiplexed video data
1440T(PAL/NTSC)
Total pixels
Active pixels
Digital active line
Video data block
SAV: Start of active video timing reference code
EAV: End of active video timing reference code
T:
clock periods 37ns normal (1/27MHz)
60 pixels
PEDL86V7668-01
ML86V7668
25/31