IREF1AIN2VDD1V83AGND4VCC_IO5ENCN6ENCB7ENCA8DRV_ENN9UART_EN10DIAG011DIAG1/SW12OV13CPI14CPO15VCP16VS17OUT1B18OUT2B19VS20VS21OUT2A22OUT1A23VS24SLEEPN25CSN/AD226SCK/AD127SDI/AD028SDO/NAO29CLK30STEP31DIR32GND33