Samsung S3C6400X User Manual page 688

S3C6400X RISC MICROPROCESSOR
BitStreamCtrl (0x10C)
Bit
0
1
2
3
Preliminary product information describe products that are in development,
for which full characterization data and associated errata are not yet available.
21-62
Specifications and information herein are subject to change without notice.
Name Type
SelBigEndian R/W
BufStsCheckDis R/W
BufPicFlush R/W
BufPicReset R/W
Function
0 – bit stream buffer is 4 byte little endian format
1 – bit stream buffer is big endian
0 – bit stream buffer overflow/underflow check
enable
1 – bit stream buffer overflow/underflow check
disable
BIT processor stop bit stream loading if bit stream
buffer underflow occurs in decoding case and stop
bit stream saving if bit stream buffer overflow
occurs in encoding case. If this flag is "1", BIT
does not check bit stream buffer
overflow/underflow status.
The value of "1" means that bit stream buffer is
flushed at every end of encoding picture.
In encoding case, after encoding one picture
internal bit stream buffer is flushed to external
SDRAM. Therefore entire encoded bit stream data
is available to host.
If this flag is "0", internal bit stream buffer is
flushed only when internal bit stream buffer is filled
to its maximal size (512 byte). Therefore at the end
of encoding one picture, the some (less than 512
byte) last encoded data is not flushed to external
SDRAM and only resides in internal bit stream
buffer. To flush remaining encoded data residing in
internal bit stream buffer, host must execute
ENC_SEQ_END command.
This flag is valid only when [BufPicReset] flag is "0"
In decoding case, this flag is ignored.
The value of "1" means that bit stream buffer is
reset at every picture encoding/decoding
command.
In encoding case, after encoding one picture bit
stream buffer is flushed to external SDRAM and
next picture encoded data is over-written to the
start of bit stream buffer. Therefore host must get
encoded data at every end of encoding picture.
MULTI-FORMAT VIDEO CODEC
Reset Value
N/A
N/A
N/A
N/A