tda5235 Infineon Technologies Corporation, tda5235 Datasheet - Page 119

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

The On and Off time setting is different from the Constant On-Off Time Mode. The entire
On time is defined in the SPMONTA0 and SPMONTA1 registers. Regardless of the
numbers of Configurations, the On time is defined with the Configuration A On-Timer.
The deactivation of the receiver can happen at different times, but this event does not
influence the timer stage, because the On time is still the same. So the master period is
constant. The following scenarios are the same as before, but with Fast Fall Back to
SLEEP.
Only the following receive modes (see
•
•
•
Figure 84
Calculation of the On time:
The On time, which is now a sum for all of the configurations used, must include enough
time to ensure proper detection of the specified wake-up pattern on all configurations. To
cover the worst case scenario, the maximum time is required on all configurations as in
Constant On-Off.
T
T
Receiver is already on, there is only a change of the configuration), e.g. if Configuration
B is used, this is the Configuration Change Latency Time.
Data Sheet
RX polling
RX polling
ON
OFF
sleep mode
sleep mode
Packet Oriented FIFO Mode (POF)
Packet Oriented Transparent Payload Mode (POTP)
Transparent Mode - Chip Data and Strobe (TMCDS)
must also include the relevant start-up times. In case of the first configuration after
, this is the Receiver Start-Up Time. In case of the following Configuration B (RF
run mode
run mode
Single Config
A
A
Multi Config
Fast Fall Back to SLEEP
B
T
T
AON
AON
T
T
MasterPeriod
MasterPeriod
T
Chapter 2.5.1.2 Data
OFF
119
T
OFF
Interface) can be used:
T
T
MasterPeriod
MasterPeriod
Functional Description
V1.0, 2010-02-19
= T
= T
AON
AON
TDA5235
+ T
+ T
OFF
OFF