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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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ADF7021 датащи(PDF) 55 Page - Analog Devices |
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ADF7021 датащи(HTML) 55 Page - Analog Devices |
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55 / 64 page  Data Sheet ADF7021 Rev. B | Page 55 of 64 REGISTER 8—POWER-DOWN TEST REGISTER PD1 PD3 PD4 PD5 DB8 DB7 DB6 DB5 DB4 DB3 DB2 C2 (0) C1 (0) CONTROL BITS DB1 DB0 C3 (0) C4 (1) Rx_RESET CR1 DB15 DB14 DB13 DB12 DB11 LE1 PD6 DB10 DB9 SW1 PD7 PD7 0 1 PA (Rx MODE) PA OFF PA ON CR1 0 1 COUNTER RESET NORMAL RESET DEMOD RESET CDR RESET SW1 0 1 Tx/Rx SWITCH DEFAULT (ON) OFF PD6 0 1 DEMOD ENABLE DEMOD OFF DEMOD ON PD5 0 1 ADC ENABLE ADC OFF ADC ON LE1 0 1 LOG AMP ENABLE LOG AMP OFF LOG AMP ON PD4 0 1 FILTER ENABLE FILTER OFF FILTER ON PD3 0 1 LNA/MIXER ENABLE LNA/MIXER OFF LNA/MIXER ON PD1 0 1 SYNTH STATUS SYNTH OFF SYNTH ON Figure 70. Register 8—Power-Down Test Register Map It is not necessary to write to this register under normal operating conditions. For a combined LNA/PA matching network, DB11 should always be set to 0, which enables the internal Tx/Rx switch. This is the power-up default condition. |
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