X9438WP24I datasheet(7/18 Pages) INTERSIL

Part #	X9438WP24I

Description	Dual Digitally Controlled Potentiometer (XDCP) with Operational Amplifier

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Manufacturer	INTERSIL [Intersil Corporation]

Direct Link	http://www.intersil.com/cda/home

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7 / 18 page

7

FN8199.0

March 11, 2005

Figure 6. Instruction Set (continued)

Transfer Data Register to Wiper Counter Register

Transfer the contents of the Register pointed to by R1 - R0 to the WCR pointed to by P0.

Transfer Wiper Counter Register to Data Register

Transfer the contents of the WCR pointed to by P0 to the Register pointed to by R1 - R0.

Global Transfer Data Register to Wiper Counter Register

Transfer the contents of all four Data Registers pointed to by R1 - R0 to their respective WCR.

Global Transfer Wiper Counter Register to Data Register

Transfer the contents of all WCRs to their respective data Registers pointed to by R1 - R0.

Increment/Decrement Wiper Counter Register

Enable Increment/decrement of the WCR pointed to by P0.

P0: 0 or 1 only.

S

T

A

R

T

device type

identifier

device

addresses

S

A

C

K

instruction

opcode

WCR/DR

addresses

S

A

C

K

S

T

O

P

01

A

3

A

2

A

1

A

0

1

101

R

1

R

0

P

0

S

T

A

R

T

device type

identifier

device

addresses

S

A

C

K

instruction

opcode

WCR/DR

addresses

S

A

C

K

S

T

O

P

HIGH-VOLTAGE

WRITE CYCLE

01

A

3

A

2

A

1

A

0

11

10

R

1

R

0

P

0

S

T

A

R

T

device type

identifier

device

addresses

S

A

C

K

instruction

opcode

DR

addresses

S

A

C

K

S

T

O

P

01

A

3

A

2

A

1

A

0

001

R

1

R

0

00

S

T

A

R

T

device type

identifier

device

addresses

S

A

C

K

instruction

opcode

DR

addresses

S

A

C

K

S

T

O

P

HIGH-VOLTAGE

WRITE CYCLE

01

A

3

A

2

A

1

A

0

1

000

R

1

R

0

00

S

T

A

R

T

device type

identifier

device

addresses

S

A

C

K

instruction

opcode

WCR

addresses

S

A

C

K

increment/decrement

(sent by master on SDA)

S

T

O

P

01

A

3

A

2

A

1

A

0

00

10

0

P

0

I/

D

I/

D

..

I/

D

I/

D

X9438

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