Texas Instruments CC2500 User Manual

CC2500
S
WRS040
C
Page
80
of
89
0x25: FSCAL1
–
Frequency Synthesizer Calibration
Bit
Field Name
Reset
R/W
Description
7:6
Reserved
R0
5:0
FSCAL1[5:0]
32
(0x20)
R/W
Frequency synthesizer calibration result register.
C
apacitor array
setting for VCO coarse tuning.
Fast frequency hopping without calibration for each hop can be done
by calibrating upfront for each frequency and saving the resulting
FSCAL3, FSCAL2 and FSCAL1 register values. Between each
frequency hop, cali
bration can be replaced by writing the FSCAL3,
FSCAL2 and FSCAL1 register values corresponding to the next RF
frequency.
0x26: FSCAL0
–
Frequency Synthesizer Calibration
Bit
Field Name
Reset
R/W
Description
7
Reserved
R0
6
:0
FSCAL0[6:0]
13 (0x0D)
R/W
Frequency synthesizer calibration control. The value to use in
this register is given by the
SmartRF

Studio software
[5]
.
0x27: RCCTRL1
–
RC Oscillator Configuration
Bit
Field Name
Reset
R/W
Description
7
R
eserved
0
R0
6:0
RCCTRL1[6:0]
65
(0x41)
R/W
RC oscillator configuration.
0x28: RCCTRL0
–
RC
O
scillator
C
onfiguration
Bit
Field Name
Reset
R/W
Description
7
Reserved
0
R0
6:0
RCCTRL0[6:0]
0
(0x00)
R/W
RC oscillator configuration.
32.2
Configuration Regi
ster Details
–
Registers that
Lose P
rogramming in
SLEEP S
tate
0x29: FSTEST
–
Frequency S
ynthesizer
C
alibration
C
ontrol
Bit
Field Name
Reset
R/W
Description
7:0
FSTEST[7:0]
89
(0x59)
R/W
For test only. Do not write to this register.
0x2A: PTEST
–
Product
ion T
est
Bit
Field Name
Reset
R/W
Description
7
:0
PTEST[7:0]
127
(0x7F)
R/W
Writing 0xBF to this register makes the on
-
chip temperature sensor
available in the IDLE state. The default 0x7F value should then be
written back before leaving the IDLE state.
Other use of this register is for test only.

Texas Instruments CC2500 Specifications

General

Brand	Texas Instruments
Model	CC2500
Category	Transceiver
Language	English