8

MITSUBISHI

〈DIGITAL ASSP〉

M66307SP/FP

LINE SCAN BUFFER with 16-BIT MPU BUS COMPATIBLE INPUTS

0

0

0

B4

0

1

0

1

0

B6

0

0

0

0

1

B5

0

0

1

1

0

Divide ratio

1

1/2

1/4

1/8

1/16

φ CLK FLAG

Valid when D11=1– Divide retio setting bit (See Table 2).

Toggle extension flag(1=toggle; 0=normal use)

Invalid when D4=1–32-bit extension flag (1=32; 0=16-bit bus)

DREQ mode flag(1=DREQ mode;

0=not DREQ mode)

Fixed beginning data output flag (1=output;

0=not output)

Fixed data polarity flag (1=High; 0=Low)

Initialization command

D15D14D13D12

1000

F7 B6 B5 B4

0

0

0

F6 F5 F4 F3 F2

D11D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0

Mode

register

DREQ words setting command

(valid when F4=1)

0111

0

0

0 A8 A7 A6 A5 A4 A3 A2 A1 A0

Number of DMA transfer words

Mode

register

0110

E11E10 E9 E8 E7 E6 E5 E4 E3 E2 E1 E0

Fixed beginning data length setting command

(valid when F3=1)

Number of fixed beginning data output bits

Fixed

beginning

data

length

register

0100

0

0

0

0

0

0

0

0

0

0

F1 F0

Output format setting command

LIFO/FIFO flag (1=LIFO; 0=FIFO output)

LSB/MSB-first flag (1=LSB; 0=MSB-first output)

DREQ

words

register

0011

0

0

0 W8 W7 W6 W5 W4 W3 W2 W1 W0

One line fixed data setting command

0010

0

0

0

0

0

0

0

0

0

0

0

0

Transmit repeat request command (Note 2)

One line fixed data output line length

0000

0

0

0

0

0

0

0

0

0

B2 B1 B0

Operation mode setting command

Operation mode setting bits (See Table 3.)

1111

0

0

0

0

0

0

0

0

0

0

0

0

Stop command

Mode

register

(1=

φ IN, 0=CLK IN)

0

0

0

0

0

1

1

0

0

0

0

1

0

1

0

1

0

1

1

0

0

Write mode

Send mode

Write mode

First word

Second word

First word

Second word

Send mode

Mode inversion

Exten-

ded

use

Normal use

Bit

Item

32 bits

Toggle

B3

B2

B1

B0

word, then

store the

second word.

(Refer to

description of

commands.)

Note 1) The default values of flags (F0-F7) and bits (B0-B6) are zero (0).

2) When using an extended system, store the second word of the operation mode setting command following the transmit

repeat request command.

3) It is impossible to control mode inversion with operation mode setting command and extended toggle input (TOG)

together.

Table 2. Divide Ratio Setting

Table 3. Operation Mode Setting

Fig. 4

Register configuration of M66307