M65762FP

REJ03F0235-0200 Rev.2.00 Sep 14, 2007

Page 21 of 34

CMD_REG:

STAT_REG:

MDET_REG:

IENB_REG:

IENB_REG:

; j = End of processing

; m = Marker detection

; s = SC counter over error

; Interrupt disable

; Termination end processing

(coding/decoding)

Start command

; Process stop interrupt enable

; mdet = Read marker code

d7

d0

00

0

00

0

0

0

00

1

00

0

0

0

00

0

01

0

0

0

mdet

−

m

−

−

j

−

− s

Note: During coding in the final processing, (number of lines in input image data) = (value set in the line count

set register)

− 1. During decoding, (number of lines in output image data) = (value set in the line count

set register) + 1.

[Performs coding/decoding processing during this period.]

−−−Inputs/outputs final image data and coding data.

End

End

(Occurrence of interrupt)

Set interrupt disable

Read out status register

(check end of processing)

Read out marker code

(Note: Decoding only)

j = 1 ?

Y

N

(Error)

s = 0 ?

Y

N (SC counter over)

(Error)

Decoding ?

Y

N (Encoding)

(Decoding)

(Marker detection)

m = 1 ?

Y

N (Marker not detected)

(Error)

3

Processing start command

(termination end processing)

Set interrupt enable

PARA_REG:

LSET_REG_L:

LSET_REG_H:

; Set change in final AT pixel.

(a"a", a"a"a"a"a")

Note: Template is not allowed to be changed

; lset_l, lset_h = Number of processing lines

Note: Enter the number of processing lines

ranging from restart of processing to the

final line.

a"

a" a"

a"

a"

a"

t

a"

lset_h

lset_l

Set AT pixel position

Set number of lines

(4) Load/store processing sequence of the context table RAM

This sequence is used to load or store context table RAM.

CMD_REG:

; Starts to load/store context table RAM

d7

d0

00

0

00

0

0

0

CMD_REG:

; End of loading/storing RAM

Since the operation does not automatically stop,

be sure to write the load/store end command.

01

0

00

0

0

0

RAM load/store start

command

End of RAM

load/store command

Note: Reading (storing) operation and writing (loading) operation are not allowed to be done at a time.

[Stores (loads) the context table RAM during this period.]

Context RAM data is stored (loaded) via buffer register.

Reading (writing) 2 bytes automatically increments the RAM address.