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TDA5255E1 Datasheet(PDF) 67 Page - Infineon Technologies AG |
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TDA5255E1 Datasheet(HTML) 67 Page - Infineon Technologies AG |
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67 / 91 page  TDA5255 E1 Version 1.2 Application Data Sheet 67 2007-02-26 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. Frequ_Detect_Timing_continuous.wmf Figure 3-31 Frequency Detection timing in continuous mode Note 1: Chip internal signal „Sequencer enables data detection“ has a LOW to HIGH transition about 2.6ms after RX is activated (see Figure 2-15). Note 2: The positive edge of the „Window Count Complete“ signal latches the result of comparison of the analog to digital converted RSSI voltage with TH3 (register 08H). A logic combination of this output and the result of the comparison with single/double THx defines the internal signal „data_valid“. Figure 3-31 shows that the logic is ready for the next conversion after 3 periods of the data signal. Timing in Single Shot mode can be seen in the subsequent figure: Frequ_Detect_Timing_singleShot_wmf Figure 3-32 Frequency Detection timing in Single Shot mode Data Sequenzer enables data detection Counter Reset Gate time Compare with single TH and latch result Compare with double TH and latch result (Frequency) Window Count Complete t t t t t t t start of conversion possible start of next conversion reset reset count count comp. comp. comp. ready* Data Sequenzer enables data detection Counter Reset Gate time Compare with single TH and latch result Compare with double TH and latch result (Frequency) Window Count Complete t t t t t t t start of conversion no possible start of next conversion because of Single Shot Mode reset count comp. comp. ready* |
Número de pieza similar - TDA5255E1_07 |
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Descripción similar - TDA5255E1_07 |
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