CC2500_06 Datasheet, PDF (77/84 Pages) Texas Instruments – Single Chip Low Cost Low Power RF Transceiver

CC2500
Bit Field Name
7:0 TIME[15:8]
0x36 (0xF6): WORTIME1 – High byte of WOR time
Reset
R/W Description
R
High byte of timer value in WOR module
Bit Field Name
7:0 TIME[7:0]
0x37 (0xF7): WORTIME0 – Low byte of WOR time
Reset
R/W Description
R
Low byte of timer value in WOR module
0x38 (0xF8): PKTSTATUS – Current GDOx status and packet status
Bit Field Name
Reset
R/W Description
7 CRC_OK
6 CS
5 PQT_REACHED
4 CCA
3 SFD
2 _GDO2
1 Reserved
0 _GDO0
R
The last CRC comparison matched. Cleared when
entering/restarting RX mode. Only valid if
PKTCTRL0.CC2400_EN = 1.
R
Carrier sense
R
Preamble Quality reached
R
Clear channel assessment
R
Sync word found
R
Current GDO2 value. Note: the reading gives the non-inverted
value irrespective what IOCFG2.GDO2_INV is programmed
to.
It is not recommended to check for PLL lock by reading
PKTSTATUS[2] with GDO2_CFG = 0x0A.
R0
R
Current GDO0 value. Note: the reading gives the non-inverted
value irrespective 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
6:0 NUM_TXBYTES
R
R
Number of bytes in TX FIFO
PRELIMINARY Data Sheet (Rev.1.2) SWRS040A
Page 77 of 83