tda5225 Infineon Technologies Corporation, tda5225 Datasheet - Page 47
tda5225
Manufacturer Part Number
tda5225
Description
Enhanced Sensitivity Multi-channel Quad-conf Igurat Ion Receiver With Digital Slicer
Manufacturer
Infineon Technologies Corporation
Datasheet
1.TDA5225.pdf
(176 pages)
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When the actual processed configuration is the last configuration before the Off time,
then the next programmed channel within the polling cycle would be the sequence of the
Off time.
When data is available and the RSSI is within a valid threshold area, an interrupt is
generated (NINT). So the Application Controller can process the data and decide about
valid data.
In case the controller decides that wrong data was sent, the microcontroller can send the
register command "EXTTOTIM" (see
When the microcontroller detects valid data, then the controller can send the register
command "EXTEOM found" (see
the data reception.
The functionality described above can also be used for the receive mode TMMF, where
the external microcontroller takes on responsibility for further data processing.
Figure 24
Data Sheet
SelfPolling scenario
Interrupt signal
Interrupt signal
Interrupt signal
RunMode SelfPolling
RunMode SelfPolling
RunMode SelfPolling
SelfPolling / Sleep
SelfPolling / Sleep
SelfPolling / Sleep
for RSSI
for RSSI
for RSSI
External Data Processing
SelfPolling Mode
Sleep Mode
ConfigA
Figure 43
Figure 43
47
and EXTPCMD register) after completing
and EXTPCMD register).
ConfigB
Chip stays in Self Polling Mode
and sends no interrupt
RSSI level too low
µC detects invalid data and sends
Functional Description
„EXTTOTIM“
OFF-time
µC finished data reception,
sends „EXTEOM found“
V1.0, 2010-02-19
goto SPM
TDA5225
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