tda5235 Infineon Technologies Corporation, tda5235 Datasheet - Page 73

• Manufacturer Part Number: tda5235
• Description: Enhanced Sensitivity Double-configuration Receiver With Digital Baseband Processing
• Manufacturer: Infineon Technologies Corporation

TDA5235
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 register IS0 is 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 the Interrupt Status
register is read for the first time.
Data Sheet
73
V1.0, 2010-02-19