Data Sheet TLE 6240 GP

V3.1

Page

26.Aug 2002

12

Example for two consecutive chip select cycles:

SI

HHLL

LLLL

XXXX

XXXX

SO

HHHH

HHHH

HHHH

HHHH

CS

SI command: No change of the output states; reading back of

the 8 inputs and 1bit diagnosis for channels 1 to 8

SO diagnosis: No fault, normal function of channels 1 to 8 or 9 to

16 depending on previous SI command

SI

HHLL

HHHH

XXXX

X XXX

SO

CS

SI command: No change of the output states; reading back of

the 8 inputs and 1bit diagnosis for channels 9 to 16 provided

during next chip select cycle

SO diagnosis: State of eight parallel inputs and 1 bit diagnosis

performed for channels 1 to 8

State of 8 par. inputs 1bit diagnosis Ch.1..8

3/8. HLHL XXXX - Echo-function of SPI

To check the proper function of the serial interface the TLE 6240 GP provides a "SPI Echo

period. By comparing the bits clocked in with the serial output bits, the proper function of the

the SO data is “0” (all registers reset).

SI

SI and SO int. connected

Echo-function of SPI, i.e. SI

directly connected to SO.

SI information will not be

accepted during this cycle.

SI

HLHL

LLLL

XXXX

X XXX

SO

HHHH

HHHH

HHHH

H HHH

CS

SI command: No change of the output states; Echo function of

SPI

SO diagnosis: No fault, normal function of channels 1 to 8 or 9 to

16 depending on previous SI command

SO

CS

4/9. LLHH XXXX DDDDDDDD - OR operation, and ‘full diagnosis’

With LLHH LLLL as the control word, each of the input signals IN1...IN4 are 'OR'ed with the

corresponding SI data bits.

With LLHH HHHH as the control word, each of the input signals IN9...IN12 are 'OR'ed with the

corresponding SI data bits.