CC2420 Chipcon AS, CC2420 Datasheet - Page 80

• Manufacturer Part Number: CC2420
• Description: 2.4 GHz RF Transceiver for IEEE 802.15.4 and ZigBee
• Manufacturer: Chipcon AS

Chipcon AS SmartRF ® CC2420 Preliminary Datasheet (rev 1.0), 2003-11-17
CCAMUX
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Signal output on CCA pin
CCA
ADC_I[0]
DEMOD_RESYNCH_EARLY
LOCK_STATUS
MOD_CHIP
MOD_SERIAL_DATA_OUT
FFCTRL_FS_PD
FFCTRL_ADC_PD
FFCTRL_VGA_PD
FFCTRL_RXBPF_PD
FFCTRL_LNAMIX_PD
FFCTRL_PA_P_PD
VGA_PEAK_DET[0]
VGA_PEAK_DET[2]
VGA_PEAK_DET[4]
AGC_LNAMIX_GAINMODE[0]
AGC_VGA_GAIN[0]
RXBPF_CAL_CLK
-
-
-
-
-
-
PD_F_COMP
FSDIG_FREF
FSDIG_FPLL
FSDIG_LOCK_WINDOW
WINDOW_SYNC
CLK_ADC_DIG
ZERO
ONE
Table 13. CCA test signal select table
Description
Normal operation
ADC, I-branch, LSB used for random number generation
High one 16 MHz clock cycle each time the demodulator
resynchronises early
Lock status, same as FSCTRL.LOCK_STATUS
Chip rate data signal during transmission
Bit rate data signal during transmission
Frequency synthesizer power down, active high
ADC power down, active high
VGA power down, active high
Receiver bandpass filter power down, active high
Receiver LNA / Mixer power down, active high
Power amplifier power down, active high
VGA Peak detector, gain stage 0
VGA Peak detector, gain stage 2
VGA Peak detector, gain stage 4
RF receiver frontend gain mode, bit 0
VGA gain setting, bit 0
Receiver bandpass filter calibration clock
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Frequency synthesizer frequency comparator value
Frequency synthesizer, 4 MHz reference signal
Frequency synthesizer, 4 MHz divided signal
Frequency synthesizer, lock window
Frequency synthesizer, synchronized lock window
ADC clock signal 2
Low
High
SmartRF
®
CC2420
Page 80 of 85