11.5.51 Collision Detector Control 0 Register
| Name: | CDCTL0 |
| Address: | 0x0087 |
| Bit | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | |
| CDEN | |||||||||
| Access | R/W | R/W | R/W | R/W | RO | RO | RO | R/W | |
| Reset | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
| Access | R/W | R/W | R/W | R/W | R/W | R/W | R/W | R/W | |
| Reset | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 1 |
Bit 15 – CDEN Collision Detect Enable
When set, this bit enables the detection of collisions on the physical medium when
transmitting.
Tip: No physical collisions will
occur when all nodes in a mixing segment are properly configured for PLCA
operation. As a result, for improved performance in high noise environments where
false collisions may be detected leading to dropped packets, it is recommended
that the user write this bit to a ‘0’ to disable collision detection when PLCA is
enabled. When collision detection is disabled, the PLCA reconciliation sublayer
will still assert logical collisions to the MAC as part of normal
operation.
CAUTION: When writing to this
bit, use a read-modify-write operation to avoid accidental modifications to
reserved fields.
| Value | Description |
|---|---|
0 |
Collision detection is disabled |
1 |
Collision detection is enabled (default) |