M65762FP Просмотр технического описания (PDF) - Renesas Electronics

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M65762FP

QM-Coder

Renesas Electronics 

M65762FP

(2) Parameter setting register (W/R)

(Address: 1)

d7

d6

d5

d4

d0

PARA_REG:

AT

TM

AT

d0 to 4 (AT<0> to AT<4>):

d5 (TM):

d6 to 7 (AT<5> to AT<6>):

Low order 5 bits of AT pixel position (see figure 2)

Selection of template (0: 3-line template, 1: 2-line template)

High-order 2 bits of AT pixel position (6th/7th bit)

(Example)

d7

d4

d0

3-line template, AT = 4

0

0

0

0

0

1

0

0

2-line template, AT = 48

0

1

1

1

0

0

0

0

Note: AT pixel position is set (0 to 127) with AT<6:0>. At the default position (AT pixel is not used), set AT = 0. The 2-

line template, prohibits AT = 1 to 4 from being set. The 3-line template prohibits AT = 1 to 2 from being set.

(3) Command register (W)

(Address: 2)

d7

CMD_REG:

0

d3

d0

JP

RC

JC

IC

d0 (IC):

d1 (JC):

d2 (RC):

d3 (JP):

Context table RAM initialization start command (1: Start initialization)

Setting this bit to 1 starts to initialize context table RAM.

When the initialization is completed automatically returns this bit to 0.

Processing (coding/decoding/through) start/end command (1: Start of processing, 0: End of processing)

Setting this bit to 1 starts processing (coding/decoding, image data through and lead/store of line

memory).

Before the issuance of this command, concrete operation mode must be set in the operation mode setup

register.

When the processing for the number of setup lines ends with the end of termination selected this bit

automatically returns to 0.

Note: When this JC bit is set to 0 during the coding process (is in progress,) and input of image data is

stopped, the coding is stopped (flashed) even if the set lines are not filled. When this bit is set to

0 during decoding process, and input of encoding data ceases, processing for the number of

setup lines is carried out assuming coding data "00" to have been input. In the case of multi-

stripe coding, however, process must not be stopped by setting this bit to 0 except for the final

stripe.

Load/store start/end command of context table RAM (1: Start of load/store, 0: End of load/store)

Setting this bit to 1 can load context data into context table RAM from outside via a buffer register or

can store context data in outside. (see the section for buffer register.)

When load/store processing is completed, this bit must be set to 0.

Temporary stop mode of processing (coding/decoding/through)/termination end mode selection

(1: Selection of temporary stop, 0: Selection of termination end)

Issuance of processing start command d1 (JC) with this JP bit set to 1 temporarily stops performing the

process operation at the completion of processing for the number of setup lines. After that, reissuance of

processing start command d1 (JC) restarts processing. (see " Register Setting Sequence" (3))

REJ03F0235-0200 Rev.2.00 Sep 14, 2007

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