5.4.55 PLCA Control 1 Register
| Name: | PLCA_CTRL1 |
| Address: | 0xCA02 |
| Bit | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | |
| NCNT[7:0] | |||||||||
| Access | R/W | R/W | R/W | R/W | R/W | R/W | R/W | R/W | |
| Reset | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | |
| Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
| ID[7:0] | |||||||||
| Access | R/W | R/W | R/W | R/W | R/W | R/W | R/W | R/W | |
| Reset | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |
Bits 15:8 – NCNT[7:0] Node Count
This field configures the maximum number of nodes supported on the multidrop network. Proper operation requires that this field be set to at least the number of nodes that may exist on the network. The number of transmit opportunities in a given PLCA cycle.
Valid range: 0x01-0xFF
Bits 7:0 – ID[7:0] PLCA Local ID
This field configures the node’s PLCA Local ID and the transmit opportunity within the PLCA cycle which it will transmit. A value of zero configures the node as the PLCA coordinator responsible for the periodic transmission of the PLCA BEACON and the number of transmit opportunities available per PLCA bus cycle. When set to 0xFF, the PLCA operation will be disabled and the node will revert to CSMA/CD.
Up to eight additional transmit opportunities may be configured in the PLCA Multiple ID 0-3 (MULTID0-MULTID3) registers.
| Value | Description |
|---|---|
0 |
PLCA Coordinator node Local ID |
1-0xFE |
PLCA Follower node Local ID |
0xFF |
PLCA Disabled |