Address offset: 0x538
IEEE 802.15.4 clear channel assessment control
| Bit number | 31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID | D | D | D | D | D | D | D | D | C | C | C | C | C | C | C | C | B | B | B | B | B | B | B | B | A | A | A | ||||||||
| Reset 0x052D0000 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 0 | 1 | 0 | 1 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||
| ID | R/W | Field | Value ID | Value | Description | ||||||||||||||||||||||||||||||
| A |
RW |
CCAMODE |
CCA mode of operation |
||||||||||||||||||||||||||||||||
|
EdMode |
0 |
Energy above threshold Will report busy whenever energy is detected above CCAEDTHRES |
|||||||||||||||||||||||||||||||||
|
CarrierMode |
1 |
Carrier seen Will report busy whenever compliant IEEE 802.15.4 signal is seen |
|||||||||||||||||||||||||||||||||
|
CarrierAndEdMode |
2 |
Energy above threshold AND carrier seen |
|||||||||||||||||||||||||||||||||
|
CarrierOrEdMode |
3 |
Energy above threshold OR carrier seen |
|||||||||||||||||||||||||||||||||
|
EdModeTest1 |
4 |
Energy above threshold test mode that will abort when first ED measurement over threshold is seen. No averaging. |
|||||||||||||||||||||||||||||||||
| B |
RW |
CCAEDTHRES |
CCA energy busy threshold. Used in all the CCA modes except CarrierMode. Must be converted from IEEE 802.15.4 range by dividing by factor ED_RSSISCALE - similar to EDSAMPLE register |
||||||||||||||||||||||||||||||||
| C |
RW |
CCACORRTHRES |
CCA correlator busy threshold. Only relevant to CarrierMode, CarrierAndEdMode, and CarrierOrEdMode. |
||||||||||||||||||||||||||||||||
| D |
RW |
CCACORRCNT |
Limit for occurances above CCACORRTHRES. When not equal to zero the corrolator based signal detect is enabled. |
||||||||||||||||||||||||||||||||