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CC2500-RTR1 数据表(PDF) 77 Page - Texas Instruments |
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CC2500-RTR1 数据表(HTML) 77 Page - Texas Instruments |
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77 / 99 page  CC2500 SWRS040C Page 77 of 89 0x1D: AGCCTRL0 – AGC Control Bit Field Name Reset R/W Description 7:6 HYST_LEVEL[1:0] 2 (10) R/W Sets the level of hysteresis on the magnitude deviation (internal AGC signal that determines gain changes). Setting Description 0 (00) No hysteresis, small symmetric dead zone, high gain 1 (01) Low hysteresis, small asymmetric dead zone, medium gain 2 (10) Medium hysteresis, medium asymmetric dead zone, medium gain 3 (11) Large hysteresis, large asymmetric dead zone, low gain 5:4 WAIT_TIME[1:0] 1 (01) R/W Sets the number of channel filter samples from a gain adjustment has been made until the AGC algorithm starts accumulating new samples. Setting Channel filter samples 0 (00) 8 1 (01) 16 2 (10) 24 3 (11) 32 3:2 AGC_FREEZE[1:0] 0 (00) R/W Controls when the AGC gain should be frozen. Setting Function 0 (00) Normal operation. Always adjust gain when required. 1 (01) The gain setting is frozen when a sync word has been found. 2 (10) Manually freezes the analog gain setting and continue to adjust the digital gain. 3 (11) Manually freezes both the analog and the digital gain settings. Used for manually overriding the gain. 1:0 FILTER_LENGTH[1:0] 1 (01) R/W Sets the averaging length for the amplitude from the channel filter. Sets the OOK decision boundary for OOK reception. Setting Channel filter samples OOK decision 0 (00) 8 4 dB 1 (01) 16 8 dB 2 (10) 32 12 dB 3 (11) 64 16 dB 0x1E: WOREVT1 – High Byte Event0 Timeout Bit Field Name Reset R/W Description 7:0 EVENT0[15:8] 135 (0x87) R/W High byte of Event 0 timeout register RES WOR XOSC Event EVENT f t _ 5 0 2 0 750 |
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