RXRDYA#/RXDRQA100CDA#99RIA#98RXA97GND96D795D694D593D492D391D290D189D088INTSEL87VCC86RXD85RID#84CDD#83RXRDYD#/RXDRQD82TXRDYD#/TXDRQD81BCLKD80OP2D#79OP1#/RS48578DACKD77FSRS#76IRTXD75DSRD#74CTSD#73DTRD#72GND71RTSD#70INTD69CSD#68TXD67IOR#66TXC65CSC#64INTC63RTSC#62VCC61DTRC#60CTSC#59DSRC#58IRTXC57TXRDYC#/TXDRQC56DACKC55TC54OP1C#/RS-48553OP2C#52BCLKC51RXRDYC#/RXDRQC50CDC#49RIC#48RXC47GND46TXRDY#45RXRDY#44RESET43CHCCLK42XTAL241XTAL140A039A138A23716/68#36CLKSEL35RXB34RIB#33CDB#32RXRDYB#/RXDRQB31BCLKB30OP2B#29OP1B#/RS-48528AEN27DACKB26TXRDYB#25IRTXB24DSRB#23CTSB#22DTRB#21GND20RTSB#19INTB18CSB#17TXB16IOW#15TXA14CSA#13INTA12RTSA#11VCC10DTRA#9CTSA#8DSRA#7IRTXA6TXRDYA#/TXDRQA#5DACKA4OP1A#/RS-4853OP2A#2BCLKA1