TLE6240GP Datasheet, PDF (12/23 Pages) Infineon Technologies AG – Smart 16-fold Low-Side Switch

Data Sheet TLE 6240 GP
Example for two consecutive chip select cycles:
CS
SI
HHLL LLLL XXXX XXXX
SO H H H H H H H H H H H H H H H H
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
CS
SI
HHLL HHHH XXXX XXXX
SO
State of 8 par. inputs 1bit diagnosis Ch.1..8
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
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
Function". By entering HLHL as control word, SI and SO are connected during the next CS
period. By comparing the bits clocked in with the serial output bits, the proper function of the
SPI interface can be verified. This internal loop is only closed once (for one CS period). The
“Echo Function” does not cause any internal processing of data and after the next CS signal
the SO data is “0” (all registers reset).
CS
SI
HLHL LLLL XXXX XXXX
SO H H H H H H H H H H H H H H H H
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
CS
SI SI and SO int. connected ^SO
Echo-function of SPI, i.e. SI
directly connected to SO.
SI information will not be
accepted during this cycle.
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.
V3.1
Page 12
26.Aug 2002