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CC2400-RTR1 数据表(PDF) 61 Page - Texas Instruments |
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CC2400-RTR1 数据表(HTML) 61 Page - Texas Instruments |
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61 / 84 page ![]() CC2400 SWRS042A Page 61 of 83 AGCCTRL (0x04) - AGC Control and Status Bit Field Name Reset R/W Description 15:8 VGA_GAIN [7:0] 0XF7 R/W When written, VGA manual gain override value; when read, the currently used VGA gain setting. 7:4 - 0 W0 Reserved, write as 0. 3 AGC_LOCKED 0 R AGC lock status 2 AGC_LOCK 0 R/W Lock gain after maximum number of attempts. 1 AGC_SYNC_LOCK 0 R/W Lock gain after sync word received and maximum number of attempts. (As configured in AGCTST0.AGC_ATTEMPTS. Attempts may be 0) 0 VGA_GAIN_OE 0 R/W Use the VGA_GAIN value during RX instead of the AGC value. FREND (0x05) – Front-end Control Register Bit Field Name Reset R/W Description 15:4 - 0 W0 Reserved, write as 0. 3 - 1 W1 Reserved, write as 1. 2:0 PA_LEVEL[2:0] 7 R/W PA output power level. RSSI (0x06) - RSSI Status and Control Register Bit Field Name Reset R/W Description 15:8 RSSI_VAL[7:0] - R Averaged RSSI estimate on a logarithmic scale in signed two’s complement format. Unit is 1 dB. Offset= -54dB, see also page 44. 7:2 RSSI_CS_THRES[5:0] 0X3C R/W Carrier sense signal threshold value in signed two’s complement format. Unit is 4 dB. The CS_ABOVE_THRESHOLD_N signal goes low when the received signal is above this value. The CS_ABOVE_THRESHOLD_N signal is available on the GIO1 pin or in the status word returned during SPI address byte. The reset value corresponds to a threshold of approx. -69 dBm. 1:0 RSSI_FILT[1:0] 2 R/W RSSI averaging filter length: 0: 0 bits (no filtering) 1: 1 bit 2: 4 bits 3: 8 bits |
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