9

FN8197.0

March 8, 2005

Instruction Format

Notes: (1) “MACK”/”SACK”: stands for the acknowledge sent by the master/slave.

(2) “A3 ~ A0”: stands for the device addresses sent by the master.

(3) “X”: indicates that it is a “0” for testing purpose but physically it is a “don’t care” condition.

(4) “I”: stands for the increment operation, SDA held high during active SCL phase (high).

(5) “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 (DR)

XFR Data Register (DR) to Wiper Counter Register (WCR)

S

T

A

R

T

device type

identifier

device

addresses

S

A

C

K

instruction

opcode

S

A

C

K

wiper position

(sent by slave on SDA)

M

A

C

K

S

T

O

P

01

01

A

3

A

2

0

A

0

100

100

00

00

W

P

5

W

P

4

W

P

3

W

P

2

W

P

1

W

P

0

S

T

A

R

T

device type

identifier

device

addresses

S

A

C

K

instruction

opcode

S

A

C

K

wiper position

(sent by master on SDA)

S

A

C

K

S

T

O

P

01

01

A

3

A

2

0

A

0

101

000

00

00

W

P

5

W

P

4

W

P

3

W

P

2

W

P

1

W

P

0

S

T

A

R

T

device type

identifier

device

addresses

S

A

C

K

instruction

opcode

register

addresses

S

A

C

K

wiper position/data

(sent by slave on SDA)

M

A

C

K

S

T

O

P

0101

A

3

A

2

0

A

0

1011

R

1

R

0

00

00

W

P

5

W

P

4

W

P

3

W

P

2

W

P

1

W

P

0

S

T

A

R

T

device type

identifier

device

addresses

S

A

C

K

instruction

opcode

register

addresses

S

A

C

K

wiper position/data

(sent by master on SDA)

S

A

C

K

S

T

O

P

HIGH-VOLTAGE

WRITE CYCLE

0101

A

3

A

2

0

A

0

1 100

R

1

R

0

00

00

W

P

5

W

P

4

W

P

3

W

P

2

W

P

1

W

P

0

S

T

A

R

T

device type

identifier

device

addresses

S

A

C

K

instruction

opcode

register

addresses

S

A

C

K

S

T

O

P

010 1

A

3

A

2

0

A

0

1101

R

1

R

0

00

X9428