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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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HDM8513 датащи(PDF) 55 Page - Hynix Semiconductor |
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HDM8513 датащи(HTML) 55 Page - Hynix Semiconductor |
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55 / 67 page  55 6.2 Read Registers ADDRESS (Hex) 00 Narrowband AGC Accumulator The current value of the six bit AGC accumulator may be read from this location. 01, 02, 03 Symbol Timing Frequency Accumulator The current value of the 20 frequency accumulator in the symbol timing loop filter may be read from these 3 locations. Bit 7 of address 01 is the MSB and bit 4 of address 03 is the LSB. 04, 05, 06 Phase Tracking Frequency Accumulator The current value of the 20 bit frequency accumulator in the carrier phase loop filter may be read from these 3 locations. Bit 7 of address 04 is the MSB and bit 4 of address 06 is the LSB. 07 QPSK Lock Status Bit 0. QPSK Lock Flag When this bit is set to one, the QPSK demodulator is phase locked. 08 Wide Band AGC Accumulator This eight bit value represents the most significant bits of the accumulator in the first order wideband AGC loop. This data only has meaning when the wideband AGC is in Mode 0. 09, 0A Sweep Frequency The 16 bit sweep accumulator is available at this location. Bit 7 of address 09 is the MSB and bit 0 of address 0A is the LSB. Th e receiver frequency is determined by adding the Sweep Frequency with the carrier frequency accumulator (read addresses 04, 05 and 06) and the nominal carrier start frequency (write addresses 04, 05 and 06). |
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