CC2400 Datasheet, PDF (68/84 Pages) Texas Instruments – 2.4 GHz Low-Power RF Transceiver

CC2400
Bit
9:8
Field Name
AFC_SETTLING[1:0]
7:0
AFC_DELTA[7:0]
Reset R/W
3
R/W
75
R/W
Description
Controls how many max-min pairs that are used to compute the
output.
00: 1 pair
01: 2 pairs
10: 4 pairs
11: 8 pairs
Programmable level used in AFC-algorithm that indicates the
expected frequency deviation of the received signal. See page
42 for further details.
MDMTST1 (0x15) - Modem Test Register 1
Bit
15:7
6:0
Field Name
Reset R/W
-
0
W0
BSYNC_THRESHOLD[6:0] 75
R/W
Description
Reserved, write as 0.
Threshold value used in clock recovery algorithm. Sets the level
for when re-synchronization takes place.
DACTST (0x16) - DAC Test Register
Bit
Field Name
Reset _R/W
15
14:12
-
DAC_SRC[2:0]
0
W0
0
R/W
Description
Reserved, write as 0.
The TX DACs data source is selected by DAC_SRC according
to:
0: Normal operation (from modulator).
1: The DAC_I_O and DAC_Q_O override values below.
2: From ADC
3: I/Q after digital down-mixing and channel filtering.
4: Full-spectrum White Noise (from PRNG.)
5: RX signal magnitude / frequency filtered (from demodulator).
6: RSSI / RX frequency offset estimation.
7: HSSD module.
11:6
5:0
DAC_I_O[5:0]
DAC_Q_O[5:0]
This feature will often require the DACs to be manually turned on
in MANOVR and PAMTST.ATESTMOD_MODE=4.
0
R/W
I-branch DAC override value.
0
R/W
Q-branch DAC override value.
SWRS042A
Page 68 of 83