M65761FP

REJ03F0234-0200 Rev.2.00 Sep 14, 2007

Page 19 of 33

(3) Processing sequence of coding/decoding of stripes (internal context mode and AT pixel position may change)

2

PEL_REG_L:

SYS_REG:

; mm = Operating mode (Coding/decoding)

; C = 0 Internal context selected

; s, x = Bit and byte swap

; p, b = Image data I/F, bit width

CONV_REG:

PEL_REG_H:

PARA_REG:

CMD_REG:

STAT_REG:

MSET_REG:

LSET_REG_L:

LSET_REG_H:

IENB_REG:

IENB_REG:

; mset = Marker code byte set up

(SDNORM = 02h, SDRST = 03h)

; aa,aaaaa = AT pixel position

; t = Template selection

; Status check

; j = 0, p = 1, temporary check

; pel_l, pel_h = Number of pixels per 1 line

; Ve, He = Expansion selection for decoding

; Vr, Hr, Ho = Select reduction during coding

; Ob = Select discarding leading 1 byte when coding

; Tp = ON/OFF of typical prediction function

; lset_l, lset_h = Number of lines process

Note: The number of lines up to the point

where AT pixel position is changed is set.

; Interrupt disable

; Stop processing temporarily (Coding/decoding)

; Processing stop interrupt enable

d7

d0

bm m

p0

C

x

s

d7

d0

00

0

00

0

0

0

00

1

00

1

0

0

00

0

01

0

0

0

Tp

Vr He

Li

Ve

Hr

Ob Ho

aa

a

aa

a

t

a

mset

lset_h

pel_l

lset_l

PARA_REG:

LSET_REG_L:

LSET_REG_H:

; AT pixel change set up (a'a', a'a'a'a'a')

Note: Template not to be changed

; lset_l, lset_h = Number of lines process

Note: Set up the number of lines to be processed from

the time processing restarted to the position where

next the next AT pixel is changed.

a'

a'

a'

a'

a'

a'

t

a'

lset_h

lset_l

−− −

−

j

−

p

−

Set up number of pixels

System set up

(LSI mode set up)

Parameter set up

(Template, AT pixel position)

Set up number of lines

Set up various functions

Process start command

(Stop processing temporarily)

Set up marker code

(Note: coding only)

Set up interrupt enable

00

pel_h

Note: Set Li to "0" when the leading

stripe of single or multi stripe is used.

Note: During the first processing, if it is coding, (the number of lines of the input image data) =

(the value set in the register which sets the number of lines) + 1

During decoding, (number of lines of the output image data) = (the value set in the register which sets the number of lines)

− 1

[Coding/decoding go on during this time]

−−−I/O of the first image data and code data take place.

3

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(Interrupt is generated)

Interrupt disable is set up

Status register is read out

Set up AT pixel position

Set up number of lines

Set up

the last AT

Go to

Last set up

Middle of set up