PERST#1VCC332GND3VCC184PECKP5PECKN6VCC18A7GND8GND9RREF10PERP11PERN12VCC18A13PETN14PETP15GND16XO17XI18VCC3319SCL20SDA21ACK22BUSY23ERR24PE25SELT26RXD027DCD028RI029DSR030CTS031VCC1832GND33RXD134DCD135RI136DSR137CTS138D739D640D541D442D343D244D145D046VCC1847GND48VCC3349TXD050RTS051DTR052TXD153RTS154DTR155GND56STB57AFD58SIN59INIT60GND61MDPRT#62MDSEL63CKSEL64