Data Sheet

CC1101
SWRS061B Page 86 of 93
0x38 (0xF8): PKTSTATUS – Current GDOx Status and Packet Status
Bit Field Name Reset R/W Description
7 CRC_OK R The last CRC comparison matched. Cleared when entering/restarting RX
mode.
6 CS R Carrier sense
5 PQT_REACHED R Preamble Quality reached
4 CCA R Channel is clear
3 SFD R Sync word found
2
GDO2
R Current GDO2 value. Note: the reading gives the non-inverted value
irrespective of what IOCFG2.GDO2_INV is programmed to.
It is not recommended to check for PLL lock by reading PKTSTATUS[2]
with GDO2_CFG=0x0A.
1 Reserved R0
0
GDO0
R Current GDO0 value. Note: the reading gives the non-inverted value
irrespective of what IOCFG0.GDO0_INV is programmed to.
It is not recommended to check for PLL lock by reading PKTSTATUS[0]
with GDO0_CFG=0x0A.
0x39 (0xF9): VCO_VC_DAC – Current Setting from PLL Calibration Module
Bit Field Name Reset R/W Description
7:0 VCO_VC_DAC[7:0] R Status register for test only.
0x3A (0xFA): TXBYTES – Underflow and Number of Bytes
Bit Field Name Reset R/W Description
7 TXFIFO_UNDERFLOW R
6:0 NUM_TXBYTES R Number of bytes in TX FIFO
0x3B (0xFB): RXBYTES – Overflow and Number of Bytes
Bit Field Name Reset R/W Description
7 RXFIFO_OVERFLOW R
6:0 NUM_RXBYTES R Number of bytes in RX FIFO
0x3C (0xFC): RCCTRL1_STATUS – Last RC Oscillator Calibration Result
Bit Field Name Reset R/W Description
7 Reserved R0
6:0 RCCTRL1_STATUS[6:0] R Contains the value from the last run of the RC oscillator calibration
routine.
For usage description refer to AN047 [4]