maple register: EXT_GPIO_INDRT_ACCESS
Details
- Name
- EXT_GPIO_INDRT_ACCESS
- Offset
- a09c
- Feature
- LED
Description
Auxiliary MDIO port access.
Normally used to connect to a single RTL8231 in MDIO (SMI) mode, but can in theory be a bus with any sort of MDIO devices. There is no indication of command failure, this has to be determined from the register values, or command timeout.
Fields
| Name | LSB | Bits | Description |
|---|---|---|---|
| GPIO_DATA | 16 | 16 |
For write commands, this contains the data to be sent when executing the command. For read commands, this contains the received data after command execution finishes. |
| RESERVED | 12 | 4 |
|
| GPIO_REG | 7 | 5 |
Number of the MDIO register to be accessed. |
| GPIO_PHY_ADDR | 2 | 5 |
PHY address of the MDIO device to be queried. |
| GPIO_RWOP | 1 | 1 |
Operation bit. Set to 0 for read requests, 1 for write requests. |
| GPIO_CMD | 0 | 1 |
Execute bit. Set to 1 to perform the request. Will self-clear after the command is completed or times out. |