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Using Ethernet port for alternate functionality

Question asked by Pavan Gidaveer on Dec 23, 2016
Latest reply on Dec 29, 2016 by Pavel Chubakov

Hello,

 

In mpc5200B, we have configured Ethernet port (bit 12:15) of GPS PORT Configuration Register (MBAR + 0B00h) as 1010 (i,e. Two UARTes, J1850).

While in this configuration, we are not using ETH_8, ETH_15 & ETH_16 pins for its specified functionality i.e, UART5e_CD, UART4_CTS & UART4_CD respectively. Rather, we want to use these pins as GPIO, i.e, we want to read and write from/to these pins as in GPIO configuration without configuring Ethernet port (bit 12:15) of GPS PORT Configuration Register (MBAR + 0B00h) as 0000 (i.e, GPIO).

 

Could you please suggest us the method to achieve that?

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