cc2538 uart0 and uart1 port

Hi TI,

I need two UART port.

Pin define of CC2538 spec only write UART0.

//GPIO Port A peripheral (for UART0 pins)
//UART0RX - PA0
//UART0TX - PA1

I don't kown which pin can be used for uart1 TX1 and RX1? Any pin?

CC2538 user's guide page277 set UART0RX pin, it can select PA0~PD7.   The document set UART1RX pin, it can select PA0~PD7.But no UART0TX or UART1TX set. Why?

Thanks.

Steven