CC2420ZRTC Datasheet, PDF (73/96 Pages) Texas Instruments – 2.4 GHz IEEE 802.15.4 / ZigBee-ready RF Transceiver

CC2420
IOCFG1 (0x1D) – I/O Configuration Register 1
Bit
15:13
12:10
Field Name
-
HSSD_SRC[2:0]
9:5
SFDMUX[4:0]
4:0
CCAMUX[4:0]
Reset R/W
0
W0
0
R/W
0
R/W
0
R/W
Description
Reserved, write as 0
The HSSD 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 mix and channel filtering.
4: Reserved
5: Reserved
6: Input ADC I and Q values
7: Input DAC I and Q values.
The HSSD 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.
Multiplexer setting for the SFD pin.
Multiplexer setting for the CCA pin.
MANFIDL (0x1E) - Manufacturer ID, Lower 16 Bit
Bit
15:12
11:0
Field Name
PARTNUM[3:0]
MANFID[11:0]
Reset R/W
2
R
0x33D R
Description
The device part number. CC2420 has part number 0x002.
Gives the JEDEC manufacturer ID. The actual manufacturer ID
can be found in MANIFID[7:1], the number of continuation bytes
in MANFID[11:8] and MANFID[0]=1.
Chipcon's JEDEC manufacturer ID is 0x7F 0x7F 0x7F 0x9E
(0x1E preceded by three continuation bytes.)
MANFIDH (0x1F) - Manufacturer ID, Upper 16 Bit
Bit Field Name
15:12 VERSION[3:0]
11:0 PARTNUM[15:4]
Reset R/W
3
R
0
R
Description
Version number. Current version is 3.
Note that previous CC2420 versions will have lower reset
values.
The device part number. CC2420 has part number 0x002.
FSMTC (0x20) - Finite state machine time constants
Bit Field Name
Reset R/W
15:13 TC_RXCHAIN2RX[2:0] 3
R/W
12:10 TC_SWITCH2TX[2:0]
6
R/W
9:6
TC_PAON2TX[3:0]
10
R/W
5:3
TC_TXEND2SWITCH[2:0]
2
R/W
2:0
TC_TXEND2PAOFF[2:0]
4
R/W
Description
The time in 5 us steps between the time the RX chain is enabled
and the demodulator and AGC is enabled. The RX chain is
started when the bandpass filter has been calibrated (after 6.5
symbol periods).
The time in advance the RXTX switch is set high, before
enabling TX. In s.
The time in advance the PA is powered up before enabling TX.
In s.
The time after the last chip in the packet is sent, and the TXRX
switch is disabled. In s.
The time after the last chip in the packet is sent, and the PA is
set in power-down. Also the time at which the modulator is
disabled. In s.
SWRS041c
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