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TLE94112ES датащи(PDF) 39 Page - Infineon Technologies AG |
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TLE94112ES датащи(HTML) 39 Page - Infineon Technologies AG |
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39 / 80 page ![]() Data Sheet 39 1.0 2020-09-29 TLE94112ES Serial Peripheral Interface (SPI) Figure 14 Setup time from EN rising edge to first SPI communication Figure 15 SPI Data Timing 7.1.1 Global Error Flag A logic OR combination between Global Error Flag (GEF) and the signal present on SDI is reported on SDO between a CSN falling edge and the first SCLK rising edge (Figure 13). GEF is set if a fault condition is detected or if the device comes from a Power On Reset (POR). Note: The SDI pin of all devices in daisy chain or non daisy chain mode must be Low at the beginning of the SPI frame (between the CSN falling edge and the first SCLK rising edge). It is possible to check if the TLE94112ES has detected a fault by reading the GEF without SPI clock pulse (Figure 16). EN SPI A) SPI message ignored EN SPI B) SPI message accepted tSET CSN SCLK SDI tlead tCSNH tlag t SCLKH t SCLKL tpCLK tSDI_hold SDO tVASDO tENSDO tDISSDO 0.8VDD 0.2VDD 0.8VDD 0.2VDD 0.8VDD 0.2VDD 0.8VDD 0.2VDD tSDI_setup |
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