9

FN8162.2

September 15, 2005

Figure 4. Four-Byte Instruction Sequence (Write or Read for WCR or Data Registers)

INSTRUCTION FORMAT

Read Wiper Counter Register (WCR)

Write Wiper Counter Register (WCR)

Read Data Register (DR)

S

T

A

R

T

A

C

K

A

C

K

SCL

SDA

A

C

K

S

T

O

P

A

C

K

ID3 ID2 ID1 ID0 A2 A1 A0 R/W

I2

0

0

0

X

X0

0

XX

X

W

C

R

9

W

C

R

8

W

C

R

7

W

C

R

6

W

C

R

5

W

C

R

4

W

C

R

3

W

C

R

2

W

C

R

1

W

C

R

0

I1 I0

0 RB RA

0

101

XX

X

Device ID

Internal

Address

Instruction

Opcode

Register

Address

Wiper or Data

Position

S

T

A

R

T

Device Type

Identifier

Device

Addresses

S

A

C

K

Instruction

Opcode

Register

Addresses

S

A

C

K

Wiper Position

(Sent by Slave on SDA)

M

A

C

K

Wiper Position

(Sent by Slave on SDA)

M

A

C

K

S

T

O

P

0101 A2 A1 A0

10000000

XXXXXX

W

C

R

9

W

C

R

8

W

C

R

7

W

C

R

6

W

C

R

5

W

C

R

4

W

C

R

3

W

C

R

2

W

C

R

1

W

C

R

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

(Sent by Master on SDA)

S

A

C

K

Wiper Position

(Sent by Master on SDA)

S

A

C

K

S

T

O

P

0101 A2 A1 A0

10100000

XXXXXX

W

C

R

9

W

C

R

8

W

C

R

7

W

C

R

6

W

C

R

5

W

C

R

4

W

C

R

3

W

C

R

2

W

C

R

1

W

C

R

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

(Sent by Slave on SDA)

M

A

C

K

wiper position or data

(Sent by Slave on SDA)

M

A

C

K

S

T

O

P

0101 A2 A1 A0

1010 RB RA 00

XXXXXX

W

C

R

9

W

C

R

8

W

C

R

7

W

C

R

6

W

C

R

5

W

C

R

4

W

C

R

3

W

C

R

2

W

C

R

1

W

C

R

0

X9119