MB86296 Datasheet, PDF (96/352 Pages) Fujitsu Component Limited. – PCI Graphics Controller Specification

FUJITSU LIMITED PRELIMINARY AND CONFIDENTIAL
8.5 External video signal input conditions
8.5.1 RTB656 YUV422 input format
The ITU R.BT-656 format is widely used for digital transmission of NTSC and PAL signals. The
format corresponds to YUV422. Interlaced video display signals can be captured and displayed
non-interlaced with linear interpolation.
When the VIE bit of the video capture mode register (VCM) is 1, Coral is able to capture video
stream data from the 8-bit VI pin in synchronization with the CCLK clock. In this mode, only a
digital video stream conforming to ITU-RBT656 can be processed. For this reason, a Y,Cb,Cr
4:2:2 format to which timing reference codes are added is used. The video stream is captured
according to the timing reference codes; Coral automatically supports both NTSC and PAL.
However, to detect error codes, set NTSC/PAL in the VS bit of VCM. If NTSC is not set, reference
the number of data in the capture data count register (CDCN). If PAL is not set, reference the
number of data in the capture data counter register (CDCP). If the reference data does not match
the stream data, bit 4 to bit 0 of the video capture status register (VCS) will be values other than
0000.
1) RTB656 input format VI[7:0]
Synchronous code and image data (Cb,Y,Cr,Y) are input as data of eight multiple bits
synchronizing with 27MHz clock, and an valid pixel is transmitted while placed between a
4T
4T
VI[7:0]
8 bit
EAV ^{Blanking data} SAV ^{Multiplexed video data} EAV
80,10,80,10,80,.
C b ,Y,Cr,Y,Cb ,Y,C r,Y,… ..
H-BLANK
276T 288T
ACTIVE-VIDEO
1440T [1440T]
ACTIVE-VIDEO -LINE
1716T 1728T
synchronous code named SAV and EAV.
SAV : Beginning code of active video data (4 Byte)
EAV : End code of active video data (4 Byte)
T : 27MHz
[ ] : 625/50 series (PAL)
BLANKING TIMING
PERIOD REF-CODE
720 PIXELS YUV4:2:2 DATA
TIMING BLANKING
REF-CODE PERIOD
… 80 10 FF 00 00 SAV Cb0 Y0 Cr0 Y1 Cb2 Y2 … Cr718 Y719 FF 00 00 EAV 80 10 …
MB86296S<Coral-PA>
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Specification Manual Rev0.1