X9409 – Preliminary Information

Characteristics subject to change without notice.

9 of 21

REV 1.6 1/30/03

www.xicor.com

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)

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

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

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

0101

A

3

A

2

A

1

A

0

100100

P

1

P

0

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

WCR

addresses

S

A

C

K

wiper position

(sent by master on SDA)

S

A

C

K

S

T

O

P

0101

A

3

A

2

A

1

A

0

101000

P

1

P

0

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

DR and WCR

addresses

S

A

C

K

wiper position

(sent by slave on SDA)

M

A

C

K

S

T

O

P

0101

A

3

A

2

A

1

A

0

1011

R

1

R

0

P

1

P

0

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

DR and WCR

addresses

S

A

C

K

wiper position

(sent by master on SDA)

S

A

C

K

S

T

O

P

HIGH-VOLTAGE

WRITE CYCLE

0101

A

3

A

2

A

1

A

0

1100

R

1

R

0

P

1

P

0

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

DR and WCR

addresses

S

A

C

K

S

T

O

P

0101

A

3

A

2

A

1

A

0

1101

R

1

R

0

P

1

P

0

S

T

A

R

T

device type

identifier

device

addresses

S

A

C

K

instruction

opcode

DR and WCR

addresses

S

A

C

K

S

T

O

P

HIGH-VOLTAGE

WRITE CYCLE

0101

A

3

A

2

A

1

A

0

1110

R

1

R

0

P

1

P

0