FUJITSU MB91460 SERIES FR60 - Manual (Page 471)

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Chapter 30 I/O Ports
3.Port Register Settings
14.Resource output lines are enabled by setting the corresponding PFR and/or EPFR bit in the port. Details
see section Port Function Register Setup on page 458 . LIN-USART outputs (SOT) must be enabled
additionally by setting the SOE bit in the LIN-USART control.
15.Resource bidirectional signals (e.g. SCK of the LIN-USART) are enabled by setting the corresponding
PFR and/or EPFR bit in the port. The signal direction is controlled by the setup of the resource, e.g. via the
output enable bits. Details see section
Port Function Register Setup on page 458 .