6.1 Pin Multiplexing
GPIOs are controlled using IO_CTRL1 Register 0x0462 – GPIO Control Register #1 and IO_CTRL2 Register 0x0463 – GPIO Control Register #2.
LED:Pin configured as LED indication. LED_CFG1 Register 0x0460 – LED Configuration Register #1 determines LED function.
CLKOUT:Pin configured as a clock output signal
WoL:Pin configured to output WoL interrupt
UV:Pin configured to output undervoltage interrupt
1588_TX:Pin configured to output transmit 1588 SFD indication
1588_RX:Pin configured to output receive 1588 SFD indication
0s:Pin configured LOW (ground)
1s:Pin configured HIGH (VDDIO)
RMII_REF:Pin configured to output RMII 50-MHz reference clock
Table 2. Pin Multiplexing
| FIELD |
PIN |
0b000 |
0b001 |
0b010 |
0b011 |
0b100 |
0b101 |
0b110 |
0b111 |
STRAP |
| LED_0 / GPIO_0 |
35 |
LED_0 |
CLKOUT_0 |
WoL |
UV |
Reserved |
Reserved |
0s |
1s |
|
| LED_1 / GPIO_1 |
6 |
LED_1 |
CLKOUT_1 |
| CLKOUT / GPIO_2 |
16 |
LED_2 |
CLKOUT_2 |
| RX_D3 |
23 |
RX_D3 |
|
|
|
|
|
|
|
RMII_REF |