tda5235 Infineon Technologies Corporation, tda5235 Datasheet - Page 105

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

Timeout timers for getting no TSI or getting no EOM within a certain time period can be
used to avoid a deadlock situation, e.g. TOTIM_TSI can be used in case an interfering
transmit signal fulfilled the wake-up criterion and keeps on transmitting, but no TSI can
be found in this data stream within a certain programmable time period. TOTIM_EOM
might be used in case EOM criterion “EOM by payload data length” cannot be applied.
The timeout timer functionality in the absence/presence of an interfering signal is shown
in
Figure 75
Data Sheet
Without interfering signal:
WU frame and Payload frame have the same modulation type
e.g. TOTIM_TSI is set to 15ms
WU-data Interrupt
RunMode SelfPolling
SelfPolling / Sleep
counter activity
counter activity
counter activity
TOTIM_SYNC
Figure 75
TOTIM_EOM
Init TOTIMs
TOTIM_TSI
TX signal
RX_RUN
and
TOTIM Behavior without Presence of Interferer
Figure
Wake-up
9.5ms
76.
RI TSI Payload1
105
5ms
Functional Description
RI TSI Payload2
5ms
V1.0, 2010-02-19
TDA5235