UART　is　a　kind　of　serial　communication　interface.　It　is　widely　used　in　data　exchange　between　microprocessor　and　peripheral　devices　because　of　its　high　reliability　and　long　transmission　distance.　This　article　introduces　integrating　UART　interface　in　an　OR1200　based　SoC(System-on-Chip)　design,　adopting　IP　reuse　strategy.　Both　UART　and　OR1200　have　WISHBONE　bus.　So,　by　using　WISHBONE　bus　to　connect　UART　to　OR1200　IP　core,　the　reformed　SoC　can　meet　the　requirements　of　data　transmission　by　UART　successfully.　The　design　idea　has　been　verified　on　board　level　test.　The　result　of　this　paper　can　be　considered　as　the　basis　of　further　complication　in　this　OR1200　based　SoC.　©　2010　IEEE.