EM2420 ETC [List of Unclassifed Manufacturers], EM2420 Datasheet - Page 84
EM2420
Manufacturer Part Number
EM2420
Description
2.4 GHz IEEE 802.15.4 / ZigBee RF Transceiver
Manufacturer
ETC [List of Unclassifed Manufacturers]
Datasheet
1.EM2420.pdf
(89 pages)
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Part Number
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Quantity
Price
Part Number:
EM2420
Manufacturer:
EMBER
Quantity:
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Test Output Signals
The two digital output pins SFD and CCA,
can be set up to output test signals
defined
Table 12. SFD test signal select table
Ember Part Number: 120-0049-000C
SFDMUX
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
by
Signal output on SFD pin
SFD
ADC_Q[0]
DEMOD_RESYNC_LATE
LOCK_STATUS
MOD_CHIPCLK
MOD_SERIAL_CLK
FFCTRL_FS_PD
FFCTRL_ADC_PD
FFCTRL_VGA_PD
FFCTRL_RXBPF_PD
FFCTRL_LNAMIX_PD
FFCTRL_PA_P_PD
AGC_UPDATE
VGA_PEAK_DET[1]
VGA_PEAK_DET[3]
AGC_LNAMIX_GAINMODE[1]
AGC_VGA_GAIN[1]
VGA_RESET_N
-
-
-
-
-
CLK_8M
XOSC16M_STABLE
FSDIG_FREF
FSDIG_FPLL
FSDIG_LOCK_WINDOW
WINDOW_SYNC
CLK_ADC
ZERO
ONE
IOCFG1.SFDMUX
and
EM2420 Datasheet
Description
Normal operation
ADC, Q-branch, LSB used for random number generation
High one 16 MHz clock cycle each time the demodulator
resynchronises late
Lock status, same as FSCTRL.LOCK_STATUS
Chip rate clock signal during transmission
Bit rate clock 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
High one 16 MHz clock cycle each time the AGC updates its gain
setting
VGA Peak detector, gain stage 1
VGA Peak detector, gain stage 3
RF receiver front-end gain mode, bit 1
VGA gain setting, bit 1
VGA peak detector reset signa, active low.
Reserved
Reserved
Reserved
Reserved
Reserved
8 MHz clock signal output
16 MHz crystal oscillator stabilised, same as the status bit in Table
5
Frequency synthesizer, 4 MHz reference signal
Frequency synthesizer, 4 MHz divided signal
Frequency synthesizer, lock window
Frequency synthesizer, synchronized lock window
ADC clock signal 1
Low
High
IOCFG1.CCAMUX. This is summarized in
Table 12 and Table 13 below.
EM2420
Page 84 of 89
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