TDA5240 Datasheet, PDF (81/284 Pages) Infineon Technologies AG – Enhanced Sensitivity Multi-Channel Quad-Configuration Receiver

TDA5240
Functional Description
SelfPolling Mode
SelfPolling scenario
Sleep Mode
ConfigA
ConfigB
OFF-time
Interrupt signal
for RSSI
RunMode SelfPolling
SelfPolling / Sleep
RSSI level too low Î
Chip stays in Self Polling Mode
and sends no interrupt
Interrupt signal
for RSSI
RunMode SelfPolling
SelfPolling / Sleep
µC detects invalid data and sends
„EXTTOTIM“Î goto SPM
Interrupt signal
for RSSI
RunMode SelfPolling
SelfPolling / Sleep
Figure 52 External Data Processing
µC finished data reception,
sends „EXTEOM found“
The SFR bit group EXTPROC in the x_CHCFG register can be activated for each
configuration set for an easier handling of external data processing by the Application
Controller. Depending on the intended transparent receive mode an activation of this
function means:
• Data path in front of Framer Unit is no longer closed (so that no data is going into
Framer Unit accidentally)
• Interrupts for FSync, MID and EOM are deactivated internally
• Some/all TOTIM counters are deactivated
• Some/all Wake-up on Data Criteria are disabled
• Wake-up on Signal Recognition is/is not disabled
Data Sheet
81
V4.0, 2010-02-19