When the Reset push button switch is pressed, the device places all pins into their default state. An additional PIO (PB16) allows the LAN9252 to be reset by software.
The figure below illustrates the implementation of the EtherCAT interface.
The table below shows the signal assignment on the HBI interface between SAMA5D27 and LAN9252.
PIO | Mnemonic | Shared | Signal Description |
---|---|---|---|
PA22 | D0 | WILC3000 | Data |
PA23 | D1 | – | Data |
PA24 | D2 | – | Data |
PA25 | D3 | – | Data |
PA26 | D4 | – | Data |
PA27 | D5 | – | Data |
PA28 | D6 | WILC3000 | Data |
PA29 | D7 | – | Data |
PB3 | D8 | – | Data |
PB4 | D9 | – | Data |
PB5 | D10 | – | Data |
PB6 | D11 | – | Data |
PB7 | D12 | – | Data |
PB8 | D13 | – | Data |
PB9 | D14 | – | Data |
PB10 | A0/D15 | – | Data |
PB12 | A1 | – | Address |
PB13 | A2 | – | Address |
PB14 | A3 | – | Address |
PB15 | A4 | – | Address |
PB2 | RD | – | Read |
PA30 | WR | – | Write |
PC6 | CS | – | Chip select |
PB11 | IRQ | – | Interrupt |
PB16 | RESET | – | Reset chip |
The figure below depicts the connection between LAN9252 and the two EtherCAT connectors.
The position of the two connectors is shown in the picture below.