Rainbow Electronics AT86RF230 User Manual
Page 35
35
AT86RF230
5131A-ZIGB-06/14/06
Bit
Field Name
Reset
R/W
Comments
7:0
ED_LEVEL
0
R
ED level for current channel.
The min. ED value (0) indicates receiver power less than or equal to
-91 dBm. The range is 84 dB with a resolution of 1 dB and an
absolute accuracy of ±5 dB.
Table 8-7.
0x07 - PHY_ED_LEVEL
Note:
A write access initiates the ED measurement (ED.request).
Bit
Field Name
Reset
R/W
Comments
7
CCA_REQUEST
0
R/W
1’d1:
starts a CCA check (CCA.request)
read value always returns with “0”
6:5
CCA_MODE
1
R/W
CCA Mode:
2’d0:
Mode 1, energy above threshold
2’d1:
Mode 1, energy above threshold
2’d2:
Mode 2, carrier sense only
2’d3:
Mode 3, carrier sense with energy above threshold
Channel:
According to IEEE802.15.4 only 11 to 26 are valid.
All unused values are reserved.
Channel Mapping
Channel Number
Frequency [MHz]
11
2405
12
2410
13
2415
14
2420
15
2425
16
2430
17
2435
18
2440
19
2445
20
2450
21
2455
22
2460
23
2465
24
2470
25
2475
4:0
CHANNEL
11
R/W
26
2480
Table 8-8.
0x08 - PHY_CC_CCA