CC1000
SWRS048A Page 45 of 55
MODEM0 Register (11h)
REGISTER
NAME
Default
value
Active
Description
MODEM0[7] -
-
-
Not
used
MODEM0[6:4]
BAUDRATE[2:0]
010
-
000 : 0.6 kBaud
001 : 1.2 kBaud
010 : 2.4 kBaud
011 : 4.8 kBaud
100 : 9.6 kBaud
101 : 19.2, 38.4 and 76.8 kBaud
110 : Not used
111 : Not used
MODEM0[3:2]
DATA_FORMAT[1:0]
01
-
00 : NRZ operation.
01 : Manchester operation
10 : Transparent Asyncronous UART operation
11 : Not used
MODEM0[1:0] XOSC_FREQ[1:0]
00
- Selection of XTAL frequency range
00 : 3MHz – 4MHz crystal, 3.6864MHz
recommended
Also used for 76.8 kBaud, 14.7456MHz
01 : 6MHz – 8MHz crystal, 7.3728MHz
recommended
Also used for 38.4 kBaud, 14.7456MHz
10 : 9MHz – 12MHz crystal, 11.0592 MHz
recommended
11 : 12MHz – 16MHz crystal, 14.7456MHz
recommended
MATCH Register (12h)
REGISTER
NAME
Default
value
Active
Description
MATCH[7:4] RX_MATCH[3:0]
0000
-
Selects matching capacitor array value for
RX, step size is 0.4 pF
0001: Use for RF frequency > 500 MHz
0111: Use for RF frequency < 500 MHz
MATCH[3:0] TX_MATCH[3:0]
0000
-
Selects matching capacitor array value for
TX, step size is 0.4 pF
FSCTRL Register (13h)
REGISTER
NAME
Default
value
Active
Description
FSCTRL[7:4] -
-
-
Not
used
FSCTRL[3:1]
Reserved
FSCTRL[0] FS_RESET_N 1 L
Separate reset of frequency synthesizer