TDA5235 Datasheet, PDF (121/259 Pages) Infineon Technologies AG – Enhanced Sensitivity Double-Configuration Receiver with Digital Baseband Processing

TDA5235
Functional Description
2.6.2.5 Permanent Wake-Up Search (PWUS)
In this mode the receiver will work in Fast Fall Back Mode, but it will not go back to the
SLEEP state after the last configuration has been searched. Instead, it will start again
from the beginning (Configuration A) until the On time has elapsed. The timing
calculation can be seen in Figure 86. Ultrafast Fall Back to SLEEP functionality can be
used as well.
Only the following receive modes (see Chapter 2.5.1.2 Data Interface) can be used:
• Packet Oriented FIFO Mode (POF)
• Packet Oriented Transparent Payload Mode (POTP)
• Transparent Mode - Chip Data and Strobe (TMCDS)
Single Config
run mode
RX polling A A A A AA
sleep mode
TAO N
TOFF
TMasterPeriod
TMasterPeriod = TAON + TOFF
Multi Config
run mode
RX polling ^{A B A B A}
sleep mode
TAON
TOFF
TMasterPeriod
Figure 86 Permanent Wake-Up Search
T_MasterPeriod = TAON + TOFF
Data Sheet
121
V1.0, 2010-02-19