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PRELIMINARY
S3C6400X RISC MICROPROCESSOR
MULTI-FORMAT VIDEO CODEC
21-90
Preliminary product information describe products that are in development,
for which full characterization data and associated errata are not yet available.
Specifications and information herein are subject to change without notice.
RET_DEC_PIC_FRAME_NUM (0x1C0)
Bit
Name
Type
Function
Comman
d
15:0
DecFrameNum
R/W
Decoded frame number.
After BIT decodes one frame, BIT increase
frame number and then stores frame number to
this register.
DEC_PIC_
RUN
RET_DEC_PIC_IDX (0x1C4)
Bit
Name
Type
Function
Comman
d
15:0
DecPicIdx
R/W
Display frame index
After BIT decodes one frame, BIT return display
frame index to this register
The frame index is the index of array of frame
buffer address that host informs by
SET_FRAME_BUF command
If BIT return -1(0xFFFF), it means that all
pictures of given bitstream have already been
decoded. For example, if host has given a
bitstream containing 20 pictures, host will get -1
value from 21th PICTURE_RUN.
In file play mode, BIT return -3(0xFFFD) when
BIT does not have a picture to be displayed. For
example, BIT does not have a picture to be
displayed before decodes maximum 16 pictures
when BIT decodes H.264 stream with reorderEn
bit enable. And BIT may not have picture to be
displayed before decodes 2 picture when BIT
decodes VC-1 streams which have B-frames.
DEC_PIC_
RUN
RET_DEC_PIC_ERR_MB_NUM (0x1C8)
Bit
Name
Type
Function
Comman
d
15:0
ErrMbNum
R/W
Error MB number in current decoded picture
If BIT recognizes the stream error, BIT performs
error concealment in MB basis and returns
concealed MB number in whole picture.
If this value is “0”, the frame is decoded with no
error.
DEC_PIC_
RUN