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PRELIMINARY
S3C6400X RISC MICROPROCESSOR
JPEG CODEC
22-23
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.
0: Don’t start main decoding process.
1: Start main decoding process.
JPEG Decoding Process in S3C6400X
S_JSTART
command initiate JPEG decoding process and if JPEG
engine get header information of JPEG file, (this mean high HD_IRQ value are detected)
S_JRSTART
command
is set high to start main decoding process.
SW_RESET_CON
Register
Address
Description
Reset Value
SW_RESET_CON 0x78801018
SW Reset JPEG
0x0000_0001
SW_RESET_CON
Bit
R/W
Description
Reserved [31:1]
-
Reserved
S_RESET [0]
R/W
0: Soft Reset enable.
1: Soft Reset disable.
If S_RESET flag is low, all registers except
SW_RESET_CON
are soft-reset.
JPGCON
Register
Address
Description
Reset Value
JPGCON
0x7880101C
JPEG control register
0x0000_0000
JPGCON
Bit
R/W
Description
Reserved [31:3]
-
Reserved
HW_DEC [2]
R/W
If this flag is high, SW_JRSTART command is not used to decode
JPEG file.
0: Hardware decoding disable
1: Hardware decoding enable
Reserved [1:0]
-
Reserved