TDA5235 Datasheet, PDF (76/259 Pages) Infineon Technologies AG – Enhanced Sensitivity Double-Configuration Receiver with Digital Baseband Processing

TDA5235
Functional Description
2.5.1.2 Data Interface
The data interface between the Application Controller and the TDA5235 receiver IC is
used for the transport of the received data, see Figure 44. The physical implementation
as well as the features of the data interface depend on the selected mode of operation.
There are 5 possible receive modes:
• Packet Oriented FIFO Mode (POF)
• Packet Oriented Transparent Payload Mode (POTP)
• Transparent Mode - Chip Data and Strobe (TMCDS)
• Transparent Mode - Matched Filter (TMMF)
• Transparent Mode - Raw Data Slicer (TMRDS)
Access points for these receive modes can be seen in Figure 15.
The possible combinations of receive modes and polling mode setup is noted in
Figure 45.
Figure 45 Receive Modes
Packet Oriented FIFO Mode (POF)
In Packet Oriented FIFO Mode, data is transferred via the 4-wire SPI bus. During receive
operation, the incoming RF signal is demodulated in the RF/IF interface, the line
decoding is performed and the data, of which wake-up frames, data frame headers and
optional footers have been stripped off, is stored in the RX FIFO. Then, the received data
can be read from the RX FIFO using the “read FIFO” command described in
Data Sheet
76
V1.0, 2010-02-19