AT86RF232 Atmel Corporation, AT86RF232 Datasheet - Page 97

• Manufacturer Part Number: AT86RF232
• Manufacturer: Atmel Corporation

Specifications of AT86RF232

• 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): 0.25
• Antenna Diversity: Yes
• External Pa Control: Yes
• Power Output (dbm): 3
• Receiver Sensitivity (dbm): -100
• Receive Current Consumption (ma): 11.8
• Transmit Current Consumption (ma): 13.8
• Link Budget (dbm): 103

8321A–MCU Wireless–10/11
Bit
0x09
Read/Write
Reset value
Bit
0x09
Read/Write
Reset value
CCA_REQUEST. The register bit is automatically cleared after requesting a CCA
measurement with CCA_REQUEST = 1.
 Bit 6:5 - CCA_MODE
The CCA mode can be selected using register bits CCA_MODE.
Table 8-15. CCA_MODE.
Register Bits
CCA_MODE
Register 0x09 (CCA_THRES):
The CCA_THRES register sets the ED threshold level for CCA.
Figure 8-12. Register CCA_THRES.
 Bit 3:0 - CCA_ED_THRES
An ED value above the threshold signals the channel during a CCA_ED measurement
as busy.
Table 8-16. CCA_ED_THRES.
Register Bits
CCA_ED_THRES
R/W
R/W
7
1
3
0
Value
Value
0x7
0
1
2
3
R/W
R/W
6
1
2
1
Description
Mode 3a, Carrier sense OR energy above threshold
Mode 1, Energy above threshold
Mode 2, Carrier sense only
Mode 3b, Carrier sense AND energy above threshold
Description
The CCA Mode 1 request indicates a busy channel if the
measured received power is above RSSI_BASE_VAL + 2
x CCA_ED_THRES [dB]. CCA Modes 0 and 3 are logical
related to this result.
CCA_ED_THRES
reserved
R/W
R/W
5
0
1
1
R/W
R/W
4
0
0
1
AT86RF232
CCA_THRES
CCA_THRES
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