Texas Instruments CC1020, Manual

Page: 63 / 95

CC1020
www.ti.com SWRS046H – NOVEMBER 2006 – REVISED MARCH 2015
Table 5-16. CC1020 Register Overview (continued)
ADDRESS ACRONYM REGISTER NAME
25h TEST5 Test register for ADC testing
26h TEST6 Test register for VGA testing
27h TEST7 Test register for VGA testing
Status information register (PLL lock, RSSI, calibration ready, and
40h STATUS
so on)
41h RESET_DONE Status register for digital module reset
42h RSSI Received signal strength register
Average received frequency deviation from IF (can be used for
43h AFC
AFC)
44h GAUSS_FILTER Digital FM demodulator register
45h STATUS1 Status of PLL calibration results and so on (test only)
46h STATUS2 Status of PLL calibration results and so on (test only)
47h STATUS3 Status of PLL calibration results and so on (test only)
48h STATUS4 Status of ADC signals (test only)
49h STATUS5 Status of channel filter “I” signal (test only)
4Ah STATUS6 Status of channel filter “Q” signal (test only)
4Bh STATUS7 Status of AGC (test only)
5.22.1 Memory
Table 5-17. MAIN Register (00h)
DEFAULT
REGISTER NAME ACTIVE DESCRIPTION
VALUE
MAIN[7] RXTX — — RX/TX switch, 0: RX , 1: TX
MAIN[6] F_REG — — Selection of Frequency Register, 0: Register A, 1: Register B
MAIN[5:4] PD_MODE[1:0] — — Power down mode
0 (00): Receive Chain in power-down in TX, PA in power-down in
RX
1 (01): Receive Chain and PA in power down in both TX and RX
2 (10): Individual modules can be put in power down by
programming the POWERDOWN register
3 (11): Automatic power-up sequencing is activated
(see
Table 5-18 )
MAIN[3] FS_PD — H Power Down of Frequency Synthesizer
MAIN[2] XOSC_PD — H Power Down of Crystal Oscillator Core
MAIN[1] BIAS_PD — H Power Down of BIAS (Global Current Generator) and Crystal Oscillator
Buffer
MAIN[0] RESET_N — L Reset, active low. Writing RESET_N low will write default values to all
other registers than MAIN. Bits in MAIN do not have a default value
and will be written directly through the configuration interface. Must be
set high to complete reset.
Table 5-18. MAIN Register (00h) When Using Automatic Power-up Sequencing
(RXTX = 0, PD_MODE[1:0] =11)
DEFAULT
REGISTER NAME ACTIVE DESCRIPTION
VALUE
MAIN[7] RXTX — — Automatic power-up sequencing only works in RX (RXTX=0)
MAIN[6] F_REG — — Selection of Frequency Register, 0: Register A, 1: Register B
MAIN[5:4] PD_MODE[1:0] — H Set PD_MODE[1:0]=3 (11) to enable sequencing
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