10

FN8174.4

July 18, 2014

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Read Data Register (DR)

Write Data Register (DR)

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

Transfer Data Register (DR) to Wiper Counter Register (WCR) (Notes 5, 6)

Increment/Decrement Wiper Counter Register (WCR) (Notes 5, 6, 7, 8, 9)

Read Status Register (SR) (Note 5)

CS

Falling

Edge

Device Type

Identifier

Device

Addresses

Instruction

Opcode

DR/Bank

Addresses

Data Byte

(Sent by X9271 on SO)

CS

Rising

Edge

0

1

0

1

00

A1 A0

1011 RB RA P1

P0 D7 D 6 D5 D4 D3 D2 D1 D0

CS

Falling

Edge

Device Type

Identifier

Device

Addresses

Instruction

Opcode

DR/Bank

Addresses

Data Byte

(Sent by Host on SI)

CS

Rising

Edge

0

1

0

1

0

0 A1 A0 1

1

0

0 RB RA P1

P0 D7 D 6 D5D4D3D2D1D0

CS

Falling

Edge

Device Type

Identifier

Device

Addresses

Instruction

Opcode

DR/Bank

Addresses

CS

Rising

Edge

HIGH-VOLTAGE

WRITE CYCLE

0

1

0

1

00

A1

A0

1

110

RB

RA

0

0

CS

Falling

Edge

Device Type

Identifier

Device

Addresses

Instruction

Opcode

DR/Bank

Addresses

CS

Rising

Edge

0

1

0

1

00

A1

A0

1

101

RB

RA

0

0

CS

Falling

Edge

Device Type

Identifier

Device

Addresses

Instruction

Opcode

DR/Bank

Addresses

Increment/Decrement

(Sent by Master on SDA)

CS

Rising

Edge

0

1

0

1

0

0

A1

A0

0

0

1

0

X

X

0

0

I/D

I/D

.

.

.

.

I/D

I/D

CS

Falling

Edge

Device Type

Identifier

Device

Addresses

Instruction

Opcode

DR/Bank

Addresses

Data Byte

(Sent by X9271 on SO)

CS

Rising

Edge

0101

0

0

A1

A0

0101000

10000000

WIP

NOTES:

5. “A1 ~ A0”: stands for the device addresses sent by the master.

6. WCRx refers to wiper position data in the Wiper Counter Register.

7. “I”: stands for the increment operation. SI held HIGH during active SCK phase (high).

8. “D”: stands for the decrement operation. SI held LOW during active SCK phase (high).

9. “X:”: Don’t Care.

X9271