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VN9D5D20FNTR Datasheet(PDF) 32 Page - STMicroelectronics |
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VN9D5D20FNTR Datasheet(HTML) 32 Page - STMicroelectronics |
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32 / 97 page  4.4.2 OTP programming The Direct Input assignment to Output through the OTP programming, is achievable by setting the two dedicated bits per channel in the OTP memory map according to the following table: Table 32. OTP memory map OTP memory map register (3Eh) bit 1, bit 0 bit 1, bit 0 bit 1, bit 0 bit 1, bit 0 00 01 10 11 CH3 DI1 DI0 DI1 OFF CH2 DI1 DI0 DI1 OFF CH1 DI0 DI0 DI1 OFF CH0 DI0 DI0 DI1 OFF Note: "00" represents the default configuration. The device is provided with the default configuration corresponding to the first column in the previous table (00). A customized OTP configuration, for each channel, is possible by changing the two dedicated bits. Table 33. OTP programming DIx assignment Ch3 Ch2 Ch1 Ch0 bit 1 bit 0 bit 1 bit 0 bit 1 bit 0 bit 1 bit 0 n n n n n n n n Each Output Status Register (OUTSRx) per channel contains the bits DIOTP1, DIOTP0 which assigns the wanted direct input signal to the channel. The OTP programming mode can be entered by applying a dedicated procedure in order to ensure a very high safety level for the stored configurations and to prevent from unwanted changing. Further information about the OTP programming mode is provided in the dedicated user manual. 4.4.3 Procedure to turn-ON the outputs with the direct input DIx By applying logic level high/low to pin, DIx turns ON/OFF the associated OTP selected outputs in fail-safe, standby and reset modes. In normal mode, DIx effect is ORed with SPI configuration when DIENCR bit is set. Then this truth table specifies the output state: Table 34. Truth table DIECRx SOCRx Related DIx logic status OUTPUTx state 1 1 X ON 1 0 L OFF 1 0 H ON 0 1 X ON 0 0 X OFF The output channels can be configured to operate in BULB or LED mode using the channel control register (CCR). If the relevant bit in CCR is 0, the output is configured in BULB mode, if it is set to 1, the output is configured in LED mode (default value is 0). VN9D5D20FN SPI functional description DS13579 - Rev 11 page 32/97 |
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