TDA5235 Datasheet, PDF (120/259 Pages) Infineon Technologies AG – Enhanced Sensitivity Double-Configuration Receiver with Digital Baseband Processing

TDA5235
Functional Description
In addition, it has to be considered that some data bits are required for synchronization
and internal latency (see Chapter 2.4.8.8 RUNIN, Synchronization Search Time and
Inter-Frame Time).
Calculation of the Off time:
The same general rules apply as for Constant On-Off Time. The Off time has to be short
enough that no wake-up pattern reception is missed.
2.6.2.4 Mixed Mode (MM, Const On-Off & Fast Fall Back to SLEEP)
This mode combines Constant-On Time and Fast Fall Back to SLEEP within different
configuration sets: Cfg.A: COO; Cfg.B: FFB
T_ON for Configuration A is always calculated according to Const On-Off rules.
T_ON for Configuration B is always calculated according to Fast Fall Back to SLEEP rules.
In Mixed Mode the On time of Configuration B is used for the FFB group. Below there
are shown the same scenarios as before, but now for Mixed Mode. Note that Single-
Configuration can be set, but is not recommended in Mixed Mode.
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
sleep mode
T AON
TBON
TOFF
TMasterPeriod
Multi Config
run mode
RX polling ^A
sleep mode
TAON
B
TBON
TMasterPeriod
Figure 85 Mixed Mode
Data Sheet
TOFF
120
T _MasterPeriod = T_AON + T _BON + T_OFF
T _MasterPeriod = T_AON + T _BON + T_OFF
V1.0, 2010-02-19