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L9965TS Datasheet(PDF) 32 Page - STMicroelectronics |
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L9965TS Datasheet(HTML) 32 Page - STMicroelectronics |
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32 / 62 page  Figure 11. VIF waveform 5.7.2.1 VIF errors and events management The error and status bits related to VIF communication are reported in Table 33 below. For the communication protocol, see Section 5.8. Table 33. VIF diagnostics Fault type Assertion condition IC reaction to assertion Release condition Maskable VIF CRC Error VIF communication wrong CRC error (previous frame received on VIF port has wrong CRC) • Frame is discarded • ISO_COMM_CRC_ERR = 1 in COMM_ERR_ISO • ISO_ERR = 1 in GEN_STATUS1 • The FLT pin and the SPI FAULT is asserted in NORMAL if MSK_ISO_ERR = 0 in GEN_CFG2 Clear on read • ISO_COMM_CRC_ERR status bit non maskable • ISO _ERR status bit non maskable • FLT pin and SPI FAULT maskable by bit MSK_ISO_ERR in GEN_CFG2 VIF Short Frame VIF communication short frame error (frame received on VIF port is shorter than 40 bits) • Frame is discarded • ISO_SHORT_FRAME = 1 in COMM_ERR_ISO • ISO_ERR = 1 in GEN_STATUS1 • The FLT pin and the SPI FAULT is asserted in NORMAL if MSK_ISO_ERR = 0 in GEN_CFG2 Clear on read • ISO_SHORT_FRAME status bit non maskable • ISO _ERR status bit non maskable • FLT pin and SPI FAULT maskable by bit MSK_ISO_ERR in GEN_CFG2 VIF Long Frame VIF communication long frame error (frame received on VIF port – with exception of compressed frames(1) – is longer than 40 bits) • Frame is discarded • ISO_LONG_FRAME = 1 in COMM_ERR_ISO • ISO_ERR = 1 in GEN_STATUS1 • The FLT pin and the SPI FAULT is asserted in NORMAL if MSK_ISO_ERR = 0 in GEN_CFG2 Clear on read • ISO_LONG_FRAME status bit non maskable • ISO _ERR status bit non maskable • FLT pin and SPI FAULT maskable by bit MSK_ISO_ERR in GEN_CFG2 FIFO TX FULL Overwriting of last TX frame with a new frame to be sent through VIF • Ongoing transmission continues • FIFO_TX frame is overwritten • FIFO_TX_FULL = 1 in GEN_STATUS1 • The FLT pin and the SPI FAULT is asserted in NORMAL if MSK_FIFO_TX_FULL = 0 in GEN_CFG3 Clear on read • FIFO_TX_FULL status bit non maskable • FLT pin and the SPI FAULT maskable by bit MSK_FIFO_TX_FULL in GEN_CFG3 L9965T/L9965TS Functional description DS14987 - Rev 1 page 32/62 |
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