AT86RF231 Atmel Corporation, AT86RF231 Datasheet - Page 92

• Manufacturer Part Number: AT86RF231
• Manufacturer: Atmel Corporation

Specifications of AT86RF231

• Max. Operating Frequency: 0 MHz
• Crypto Engine: AES
• Operating Voltage (vcc): 1.8 to 3.6
• Frequency Band: 2.4 GHz
• Max Data Rate (mb/s): 2
• Antenna Diversity: Yes
• External Pa Control: Yes
• Power Output (dbm): 3
• Receiver Sensitivity (dbm): -101
• Receive Current Consumption (ma): 13.2
• Transmit Current Consumption (ma): 14.4
• Link Budget (dbm): 104

8.4.3
8.4.4
8111C–MCU Wireless–09/09
Data Interpretation
Interrupt Handling
The PHY_ED_LEVEL is an 8-bit register. The ED value of the AT86RF231 has a valid range
from 0x00 to 0x54 with a resolution of 1 dB. All other values do not occur; a value of 0xFF indi-
cates the reset value. A value of PHY_ED_LEVEL = 0 indicates that the measured energy is
less than -91 dBm (see parameter 12.7.16 RSSI_BASE_VAL,
teristics” on page
parameters, etc.) the calculated ED value has a maximum tolerance of ±5 dB, this is to be con-
sidered as constant offset over the measurement range.
An ED value of 0 indicates an RF input power of P
0 to 84, the RF input power can be calculated as follows:
Figure 8-5.
Interrupt IRQ_4 (CCA_ED_DONE) is issued at the end of a manually initiated ED measurement.
Note that an ED request should only be initiated in receive states. Otherwise the radio trans-
ceiver generates an IRQ_4 (CCA_ED_DONE); however no ED measurement was performed.
-100
-10
-20
-30
-40
-50
-60
-70
-80
-90
P
10
RF
0
0
= -91 + ED [dBm]
Mapping between Received Input Power and ED Value
160). Due to environmental conditions (temperature, voltage, semiconductor
10
Measured
Ideal
20
PHY_ED_LEVEL (register 0x07)
30
40
RF
≤ -91 dBm. For an ED value in the range of
50
Section 12.7 “Receiver Charac-
60
70
AT86RF231
80
90
92