EM2420-STR Ember, EM2420-STR Datasheet - Page 73

• Manufacturer Part Number: EM2420-STR
• Description: IC RF TXRX ZIGBEE 2.4GHZ 48-QLP
• Manufacturer: Ember

Specifications of EM2420-STR

• Mfg Application Notes: EM2420
• Frequency: 2.4GHz
• Data Rate - Maximum: 250kbps
• Modulation Or Protocol: 802.15.4
• Applications: ZigBee™
• Power - Output: -3dBm
• Sensitivity: -94dBm
• Voltage - Supply: 2.1 V ~ 3.6 V
• Current - Receiving: 19.7mA
• Current - Transmitting: 17.4mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 48-QLP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Memory Size: -

Bit
AGCTST1 (0x25) - AGC Test Register 1
Bit
15
14
13
12:11
10:8
7:6
5:0
AGCTST2 (0x26) - AGC Test Register 2
Bit
15:10
9:5
4:0
Ember Part Number: 120-0049-000D
Field Name
Field Name
-
AGC_BLANK_MODE
PEAKDET_CUR_BOOST
AGC_SETTLE_WAIT[1:0]
AGC_PEAK_DET_MODE
[2:0]
AGC_WIN_SIZE[1:0]
AGC_REF[5:0]
Field Name
-
MED2HIGHGAIN[4:0]
LOW2MEDGAIN[4:0]
Reset
Reset
0
0
0
1
0
1
20
Reset
0
9
10
EM2420 Datasheet
R/W
R/W
W0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
W0
R/W
R/W
Description
gain mode, defined in 2 dB steps
Description
Reserved, write as 0
Set the VGA blanking mode when switching out a gainstage
When VGA_GAIN_OE = 0:
0 : Blanking is performed when the AGC algorithm switches
out one or more 14dB gain stages.
1 : Blanking is never performed.
When VGA_GAIN_OE = 1:
Blanking is performed when AGC_BLANK_MODE=1
Doubles the bias current in the peak-detectors in-between the
VGA stages when set.
Timing for AGC to wait for analog gain to settle.
Sets the AGC mode for use of the VGA peak detectors:
Bit 2 : Digital ADC peak detector enable / disable
Bit 1 : Analog fixed stages peak detector enable /
Bit 0 : Analog variable gain stage peak detector enable /
Window size for the accumulate and dump function in the
AGC.
0 : 8 samples
1 : 16 samples
2 : 32 samples
3 : 64 samples
Target value for the AGC control loop, given in 2 dB steps.
Reset value corresponds to approximately 25% of the ADC
dynamic range in reception.
Description
Reserved, write as 0
MED2HIGHGAIN sets the difference in the receiver
LNA/MIXER gain from medium gain mode to high gain mode,
used by the AGC for setting the correct frontend gain mode.
LOW2MEDGAIN sets the difference in the receiver
LNA/MIXER gain from low gain mode to medium gain mode,
used by the AGC for setting the correct frontend gain mode.
disable
disable
EM2420
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