TDA5225 Datasheet, PDF (62/176 Pages) Infineon Technologies AG – Enhanced Sensitivity Multi-Channel Quad-Configuration Receiver

TDA5225
Functional Description
RX_RUN=0
RX_RUN == 0
1
IDLE
Chip is idle
RX_RUN == 1
From Run Mode Self Polling
2
Wait
Wait Till Startup
Has Finished
Startup Finished == 0
Startup Finished == 1
3
Init
Loop Counter
CfgLoopCounter ,
Loop Counter
is Initialized
WU Search With
Configuration A
4 ^Modulation
Switching CFG A
Modulation Selection
Depending On Register
Set t ing
5
Init With
CFG A
Initialize RX- Part
Configuration A
Loop Counter == 10
Loop Counter == 11
6
Load
11
Load
11
Load
Channel 1
Channel 2
Channel 3
Initialize RX- Part
Multi Channel A
Initialize RX-Part
Multi Channel A
Initialize RX-Part
Multi Channel A
Const On Time
ON Time elapsed == 0
WU Found == 0
7
WU Search
CFG A COOT
Search For A Configurated
Wake Up Criteria
Const On Off
ON Time elapsed == 1
WU Found == 0
ON Time elapsed == X
WU Found == 1
Loop Counter Equal ANOC == 1
CfgLoopCounter <> CfgNr
9
Compare
Compare Loop Counter
Against Number Of
C hannels
Loop Counter <> ANOC
Loop Counter == ANOC
CfgLoopCounter == CfgNr
10 _Increment
Loop Counter
Incrementation Of
The Loop Counter
Figure 41
8
Store
Channel
Store The Current Channel
Configuration Into Actual
Channel Register
Generating CFG A
Interrupt If Not Masked
To Init Loop Counter
of Config B
12 _{Run Mode}
Self Polling
Chip is permanently
ac t iv e
Wake-up Search with Configuration A
From Compare of
Config B, C, D
Data Sheet
62
V1.0, 2010-02-19