TDA5252G2 INFINEON [Infineon Technologies AG], TDA5252G2 Datasheet - Page 65

• Manufacturer Part Number: TDA5252G2
• Description: ASK/FSK 915MHz Wireless Transceiver
• Manufacturer: INFINEON [Infineon Technologies AG]

Figure 3-27
3.7
In order to detect valid data two criteria must be fulfilled.
One criteria is the data rate, which can be set in register 06h and 07h. The other one is the received
RF power level, which can be set in register 08h in form of the RSSI threshold voltage. Thus for
using the data valid detection FSK modulation is recommended.
Timing for data detection looks like the following. Two settings are possible: „Continuous“ and
„Single Shot“, which can be set by D5 and D6 in register 00H.
Figure 3-28
Data Sheet
Vcc
Signal
0
Power ON
Data Valid Detection
Power down mode
Frequency Detection timing in continuous mode
Compare with double
(Frequency) Window
Compare with single
Sequenzer enables
TH and latch result
TH and latch result
Count Complete
Counter Reset
data detection
Neg. Peak Detector (pin12)
Pos. Peak Detector (pin13)
Threshold (pin14)
Gate time
Power Down
Data
start of conversion
reset
65
count
possible start of next conversion
Power ON
comp.
2,2ms
comp.
ready*
Peak Detector Power ON
Data Signal
reset
count
comp.
Frequ_Detect_Timing_continuous.wmf
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TDA5252 G2
Version 1.1
Application
PkD_PWDN3.wmf
2007-02-26
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