The TLIN1431 device can be reset in various ways. In SPI mode, there are three methods to reset the device. Two are accomplished with SPI commands – soft reset and hard reset. Soft reset and hard reset are accomplished by writing 02h or 01h respectively to DEVICE_RST (Address 19h) register. nRST pin can also be used to reset the device by pulling nRST low for t_nRSTIN and releasing the pin. nRST pin reset works for both SPI and PIN mode.

When performing a soft reset (SPI Mode), the following takes place:

• Device transitions to restart mode, nRST pin is pulled low for t_{NRST_TOG} and then transitions to standby mode.
• All registers are reset to default values
• All pending interrupts are cleared (unless a fault persists). PWRON interrupt is not cleared by soft reset.
• V_CC stays in the same state it was in
• INH stays ON

When performing a hard reset (SPI Mode), the following takes place:

• Similar behavior as power-up
• Device transitions to Init mode – V_CC is re-enabled, INH/WKRQ is re-sampled, SPI/PIN mode determination is made
• All registers are reset to default values
• PWRON flag is set is with a hard reset (if previously cleared)

When pulling nRST pin low and releasing (SPI or PIN Mode), the following takes place:

• Device transitions to restart mode, nRST pin is pulled low for t_{NRST_TOG} and then transitions to standby mode.
• All registers retain the same value as before nRST reset
• V_CC stays in the same state it was in
• All pending interrupts are retained
• INH stays ON