TLE8104E

Smart Quad Channel Powertrain Switch

SPI Control

Data Sheet

21

V1.4, 2010-04-26

Figure 16

Echo Function of SPI

6.1.4

Example: OR Operation and Diagnosis

Sets the

contents of the diagnosis register will be returned during the next SPI access

(see Figure 17). If the OR operation

is programmed, it is latched until overwritten by an AND operation. This is the default operation after the device

emerges from power-up or Reset mode.

Figure 17

OR Operation and Diagnosis

6.1.5

Example: AND Operation and Diagnosis

Sets the

contents of the diagnosis register will be returned during the next SPI access

(see Figure 18). If the AND operation

is programmed, it is latched until overwritten by an OR operation, the device enters Reset mode or becomes shut

down.

Figure 18

AND Operation and Diagnosis

CS

IN2 IN1

F4

F3

F2

F1

IN3

IN4

t

t

t

10

XX

X

X

0

1

XX

XX

X

X

X

X

XX

XX

X

X

X

X

SI

SO

SI word

SI word

Echo Function of SPI

BOL set to OR

Standard Diagnosis

CS

CH3

CH2

CH1

CH4

0

CH4

1

t

t

t

0

0

XX

X

X

XX

X

X

X

X

XX

XX

X

X

SI

SO

OR with INn signals

Standard Diagnosis

CS

CH3

CH2

CH1

CH4

0

CH4

1

t

t

t

1

1

XX

XX

X

X

X

X

XX

XX

XX

X

X

SI

SO

BOL set to AND

1

1

AND with INn signals