CC2400 Chipcon AS, CC2400 Datasheet - Page 56

• Manufacturer Part Number: CC2400
• Description: 2.4 GHz RF Transceiver
• Manufacturer: Chipcon AS

FREQEST (0x07) - Received frequency offset estimation
15:8
7:0
IOCFG (0x08) - I/O configuration register
15
14:9
8:3
2:0
FSMTC (0x0B) - Finite state machine time constants
15:13
12:10
9:6
5:3
Chipcon AS
Bit
Bit
Bit
Field Name
RX_FREQ_OFFSET[7:0]
-
Field Name
-
GIO6_CFG[5:0]
GIO1_CFG[5:0]
HSSD_SRC[2:0]
Field Name
TC_RXON2AGCEN[2:0]
TC_PAON2SWITCH[2:0]
TC_PAON2TX[3:0]
TC_TXEND2SWITCH[2:0]
SmartRF
®
CC2400 PRELIMINARY Datasheet (rev. 1.1), 2003-10-02
Reset
-
0
Reset
0
11
60
0
Reset
3
6
10
2
R/W
R
W0
R/W
W0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
SmartRF
Description
Estimate of the received signals centre frequency comparison to
the ideal 1 MHz centre frequency. Two's complement signed
value. See page 40.
Reserved, write as 0.
Description
Reserved, write as 0.
Configuration of the GIO6 pin. See page 43 for options. The
reset value outputs the signal CRC_OK on pin GIO6.
How to use the GIO1 pin. See page 43 for options. The reset
value outputs the signal LOCK_STATUS on pin GIO1.
For test purposes only.
The HSSD (High Speed Serial Data) test module is used as
follows:
0: Off.
1: Output AGC status (gain setting / peak detector status /
accumulator value)
2: Output ADC I and Q values.
3: Output I/Q after digital down-mixing and channel filtering.
4: Output RX signal magnitude / frequency unfiltered (from
demodulator).
5: Output RX signal magnitude / frequency filtered (from
demodulator).
6: Output RSSI / RX frequency offset estimation
7: Input DAC values.
The HSSD test module requires that the FS is up and running as
it uses CLK_PRE (~150 MHZ) to produce its ~37.5 MHz data
clock and serialize its output words. Also, in order for HSSD to
function properly
Description
The time in 5 us steps from RX is turned on until the AGC is
enabled. This time constant must be large enough to allow the
RX chain to settle so that the AGC algorithm starts working on a
proper signal. The default value corresponds to 15 us.
The time in us from the PA is turned on until the TX/RX switch
allows the TX signal to pass.
The time in us from the PA is turned on until the first TX bit is
sent to the modulator.
The time in us from the last bit is sent to the modulator until the
RX/TX switch breaks the TX output.
GRMDM.PIN_MODE
®
CC2400
must be set for HSSD.
Page 56 of 73