Texas Instruments CC112 Series, User Manual, Page: 97 / 109

CC112X/CC1175
SWRU295C Page 97 of 108
RSSI1 - Received Signal Strength Indicator (MSB)
Bit no. Name Reset R/W Description
7:0 RSSI_11_4 0x80 R
Received Signal Strength Indicator. 8 MSB of
RSSI[11:0] . RSSI[11:0]
is a two's
complement number with 0.0625 dB resolution hence ranging from -128 to 127 dBm. A
value of -128 dBm indicates that the RSSI is invalid. To get a correct RSSI value a
calibrated RSSI offset value should be subtracted from the value given by
RSSI[11:0] .
This RSSI offset value can either be subtracted from
RSSI[11:0]
manually or the offset can be written to
AGC_GAIN_ADJUST.GAIN_ADJUSTMENT
meaning that
RSSI[11:0]
will give a correct value directly
RSSI0 - Received Signal Strength Indicator (LSB)
Bit no. Name Reset R/W Description
7 RSSI0_NOT_USED 0x00 R
6:3 RSSI_3_0 0x00 R Received Signal Strength Indicator. 4 LSB of
RSSI[11:0].
See
RSSI1
2 CARRIER_SENSE 0x00 R Carrier Sense
0 No carrier detected
1 Carrier detected
1 CARRIER_SENSE_VALID 0x00 R Carrier Sense Valid
0 Carrier Sense not valid
1 Carrier Sense valid
0 RSSI_VALID 0x00 R RSSI Valid
0 RSSI not valid
1 RSSI valid