TDA5225 Datasheet, PDF (43/176 Pages) Infineon Technologies AG – Enhanced Sensitivity Multi-Channel Quad-Configuration Receiver

TDA5225
Functional Description
supply, the integrity of the stored data and configuration can no longer be guaranteed;
thus a reset is generated. While the supply voltage stays between the brownout and the
functional threshold of the chip, the NINT signal is forced to low. When the supply voltage
drops below the functional threshold, the levels of all digital output pins are undefined.
When the supply voltage raises above the brownout threshold, the IC generates a high
pulse at NINT and remains in the reset state for the duration of the reset time. When the
IC leaves the reset state, the Interrupt Status registers (IS0 and IS1) are set to 0xFF and
the NINT signal is forced to low. Now, the IC starts operation in the SLEEP Mode, ready
to receive commands via the SPI interface. The NINT signal will go high, when one of
the Interrupt Status registers is read for the first time.
Data Sheet
43
V1.0, 2010-02-19