TPIC2810

SLIS109A – DECEMBER 2001 – REVISED SEPTEMBER 2002

13

POST OFFICE BOX 655303

PRINCIPLES OF OPERATION

subaddress definition:

Summary:

HEX

Value

R/W

Bit

Function

11H

1

Read data from the input register

11H

0

Write data to the data shift register, do not transfer to output register

22H

0

Command to transfer data from the data shift register to the output storage register

44H

0

Write data to the data shift register and transfer it to the output storage register immediately (extra

load 22H command not needed)

Other

x

No action on undefined subaddresses

All other undefined subaddress values are not acknowledged.

register definition:

storage register.

S

G3 G2 G1 G0 A2 A1 A0 RW

A

S7 S6 S5 S4

S3 S2 S1

A

S0

Slave Address and R/W

Subaddress

D7 D6 D5 D4 D3 D2 D1

A

D0

Data

P

S

G

A(0:2)

RW

A

Subaddress

Data

P

Start Condition

Group ID: Defined as 1100

Device Address Selectable Via Input Terminals

Read/Write Select Bit

Acknowledge

Defined Per Subaddress Table

Data to Be Loaded Into the Shift and Output Registers

Stop Condition