TLE7209-2R_07 Datasheet, PDF (11/32 Pages) Infineon Technologies AG – 7 A H-Bridge for DC-Motor Applications

TLE 7209-2R
Circuit Description
6. Because only read access is used in the TLE 7209-2R, the SDI data-bits (2nd byte)
are not used
7. Invalid instruction/access:
An instruction is invalid if an unused instruction code is detected (see tables with SPI
instructions). In case an unused instruction code occurred, the data byte “ff_hex” (no
error) will be transmitted after having sent the verification byte. This transmission
takes place within the same SPI-frame that contained the unused instruction byte. In
addition any transmission is invalid if the number of SPI clock pulses (falling edge)
counted during active CSN differs from exactly 16 clock pulses. If an invalid instruction
is detected, bit TRANS_F in the following verification byte (next SPI transmission) is
set to HIGH. The TRANS_F bit must not be cleared before it has been sent to the
microcontroller.
8. Transfer error bit TRANS_F:
The bit TRANS_F indicates an error during the previous transfer. An error is
considered to have occurred when an invalid command was sent, the number of SPI
clock pulses (falling edge) counted during active CSN was less than or greater than
16 clock pulses, or SPI clock (SCK) was logical high during falling edge of CSN.
Data Sheet
11
Rev. 1.4, 2007-04-05