CC2500RGPR Datasheet, PDF (67/99 Pages) Texas Instruments – Low-Cost Low-Power 2.4 GHz RF Transceiver

CC2500
Bit Field Name
7
DEM_DCFILT_OFF
6:4 MOD_FORMAT[2:0]
3
MANCHESTER_EN
2:0 SYNC_MODE[2:0]
0x12: MDMCFG2 – Modem Configuration
Reset R/W Description
0
R/W
0 (000) R/W
0
R/W
2 (010) R/W
Disable digital DC blocking filter before demodulator.
0 = Enable (better sensitivity)
1 = Disable (current optimized). Only for data rates
≤ 250 kBaud
The recommended IF frequency changes when the DC
blocking is disabled. Please use SmartRF^ Studio [5] to
calculate correct register setting.
The modulation format of the radio signal
Setting Modulation format
0 (000) 2-FSK
1 (001) GFSK
2 (010) -
3 (011) OOK
4 (100) -
5 (101) -
6 (110) -
7 (111) MSK
Enables Manchester encoding/decoding.
0 = Disable
1 = Enable
Combined sync-word qualifier mode.
The values 0 (000) and 4 (100) disables preamble and
sync word transmission in TX and preamble and sync
word detection in RX.
The values 1 (001), 2 (010), 5 (101) and 6 (110)
enables 16-bit sync word transmission in TX and 16-
bits sync word detection in RX. Only 15 of 16 bits need
to match in RX when using setting 1 (001) or 5 (101).
The values 3 (011) and 7 (111) enables repeated sync
word transmission in TX and 32-bits sync word
detection in RX (only 30 of 32 bits need to match).
Setting Sync-word qualifier mode
0 (000) No preamble/sync
1 (001) 15/16 sync word bits detected
2 (010) 16/16 sync word bits detected
3 (011) 30/32 sync word bits detected
4 (100) No preamble/sync, carrier-sense
above threshold
5 (101) 15/16 + carrier-sense above threshold
6 (110) 16/16 + carrier-sense above threshold
7 (111) 30/32 + carrier-sense above threshold
SWRS040C
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