Field

Bits

Type

Description

CMD

ADDR

DATA

Field

Bits

Type

Description

CHn

(n = 7-0)

Data Sheet

27

Rev. 1.0, 2007-12-18

SPI Driver for Enhanced Relay Control

SPIDER - TLE7232GS

Block Description and Electrical Characteristics

5.4.5

SPI Protocol

The SPI protocol of the SPIDER - TLE7232GS provides two types of registers. The control registers and the

diagnosis registers. After power-on reset, all register bits set to default values.

SI

15

14

13

12

11

10

9876

5432

10

CMD

0

0

0

ADDR

DATA

15:14

Command

00

Diagnosis only: The requested data is shifted out at SO. This

command does not change any register setting.

01

Read register: The register content of the addressed register will

be sent in the next frame.

10

Reset registers: All registers are reset to their default values.

11

Write register: The data of the SI word will be written to the

addressed register.

10:8

Address

Pointer to register for read and write command

7:0

Data

Data written to or read from register selected by address ADDR

SO

Standard Diagnosis

15

14

13

12

11

10

9876

5432

10

CH7

CH6

CH5

CH4

CH3

CH2

CH1

CH0

(2n+1):2n

Standard Diagnosis for Channel n

00

Short circuit to GND

01

Open load

10

Overload, overtemperature

11

Normal operation

SO

Second Frame of Read Command

15

14

13

12

11

10

9876

5432

10

0

1

0

0

0

ADDR

DATA