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Registers, 1 dadr: d/a data register, 2 dacr: d/a control register – FUJITSU MB91460 SERIES FR60 User Manual

Page 927: Registers 4.1 dadr: d/a data register

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Chapter 45 D/A Converter

4.Registers

4. Registers

4.1 DADR: D/A Data Register

The D/A Data Register sets the output voltage of the D/A converter.

• DADR0(ch0): Address 0364

H

(Access:

Byte, Half-word

)

• DADR1(ch1): Address 0366

H

(Access:

Byte, Half-word

)

(For the attributes, refer to the “

Meaning of Bit Attribute Symbols (Page No.10)

”.)

• The D/A Data Register is not initialized on a reset.

• The setting is “000

H

” - “3FF

H

”.

4.2 DACR: D/A Control Register

The D/A Control Register controls whether D/A converter output is enabled or disabled.

• DACR(ch0/ch1): Address 0361

H

(Access:

Byte

)

(For the attributes, refer to the “

Meaning of Bit Attribute Symbols (Page No.10)

”.)

• bit7-3: Undefined

At write, always write “0”. At read, the read value is indeterminate.

• bit0: D/A output control

• Enables a converted analog level to be output from the DA pin.

(To place the DA0 pin in the output state, it is necessary to set PFR28.6=“1”.

• The D/A output equals 0.0 V when the

D/A output control

bit is “0”.

• bit1: D/A output control

• Enables a converted analog level to be output from the DA pin.

(To place the DA1 pin in the output state, it is necessary to set PFR28.7=“1”.

• The D/A output equals 0.0 V when the

D/A output control

bit is “0”.

15

14

13

12

11

10

9

8

Bit

-

-

-

-

-

-

DA9

DA8

-

-

-

-

-

-

X

X

Initial value

RX/W0

RX/W0

RX/W0

RX/W0

RX/W0

RX/W0

R/W

R/W

Attributes

7

6

5

4

3

2

1

0

Bit

DA7

DA6

DA5

DA4

DA3

DA2

DA1

DA0

X

X

X

X

X

X

X

X

Initial value

R/W

R/W

R/W

R/W

R/W

R/W

R/W

R/W

Attributes

7

6

5

4

3

2

1

0

bit

MD08

DAE1

DAE0

0

0

0

Initial value

RX, W0

RX, W0

RX, W0

RX, W0

RX, W0

R/W

R/W

R/W

Attributes

DAE0

Operation

0

D/A output disabled

1

D/A output enabled

DAE1

Operation

0

D/A output disabled

1

D/A output enabled