9

FN8168.5

April 14, 2011

Wiper Counter Register, (8-bit), Volatile

One 8-bit Wiper Counter Register for each DCP (four 8-bit

registers in total.)

{D7~D0}: These bits specify the wiper position of the

respective DCP. The Wiper Counter Register is loaded on

power-up by the value in Data Register 0. The contents of

the WCR can be loaded from any of the other Data Register

or directly. The contents of the WCR can be saved in a DR.

Instruction Format

NOTES:

2. “MACK”/”SACK”: stands for the acknowledge sent by the

master/slave.

3. “A3 ~ A0”: stands for the device addresses sent by the master.

4. “X”: indicates that it is a “0” for testing purpose but physically it is

a “don’t care” condition.

5. “I”: stands for the increment operation, SDA held high during

active SCL phase (high).

6. “D”: stands for the decrement operation, SDA held low during

active SCL phase (high).

Read Wiper Counter Register (WCR)

Write Wiper Counter Register (WCR)

Read Data Register (DR)

Write Data Register (WR)

WP7

WP6

WP5

WP4

WP3

WP2

WP1

WP0

V

V

V

VVV

V

V

(MSB)

(LSB)

S

T

A

R

T

DEVICE TYPE

IDENTIFIER

DEVICE

ADDRESSES S

A

C

K

INSTRUCTION

OPCODE

WCR

ADDRESSES S

A

C

K

WIPER POSITION

(SENT BY SLAVE ON SDA)

M

A

C

K

S

T

O

P

0

1

0

1 A3 A2 A1 A0

1001 0 0 P1 P0

WP7 WP6 WP5 WP4 WP3 WP2 WP1 WP0

S

T

A

R

T

DEVICE

TYPE

IDENTIFIER

DEVICE

ADDRESSES

S

A

C

K

INSTRUCTION

OPCODE

WCR

ADDRESSES

S

A

C

K

DATA BYTE

(SENT BY MASTER ON SDA)

S

A

C

K

S

T

O

P

0101 A3 A2 A1 A0

1010

0 0 P1 P0

WP7 WP6 WP5 WP4 WP3 WP2 WP1 WP0

S

T

A

R

T

DEVICE TYPE

IDENTIFIER

DEVICE

ADDRESSES S

A

C

K

INSTRUCTION

OPCODE

DR AND WCR

ADDRESSES

S

A

C

K

DATA BYTE

(SENT BY SLAVE ON SDA)

M

A

C

K

S

T

O

P

0101 A3 A2 A1 A0

1

0

1

1 R1 R0 P1 P0

WP7 WP6 WP5 WP4 WP3 WP2 WP1 WP0

S

T

A

R

T

DEVICE

TYPE

IDENTIFIER

DEVICE

ADDRESSES S

A

C

K

INSTRUCTION

OPCODE

DR AND WCR

ADDRESSES

S

A

C

K

DATA BYTE

(SENT BY MASTER ON SDA)

S

A

C

K

S

T

O

P

HIGH-VOLTAGE

WRITE CYCLE

01 01A

3

A

2

A

1

A

0

1

1

0

0

R1 R0 P1 P0

WP7 WP6 WP5 WP4 WP3 WP2 WP1 WP0

X9258