PORTS AND CONNECTORSTechnical Summary, Rev. 0Freescale Semiconductor 32.2.3 GPIO / SERIAL2.2.4 TIMER / PWM2.2.5 ADC Port2.2.6 COM1RTS and CTS flow control connection pads are provided on the 56F800 Demonstration Board toapply unassigned 56F801 I/O to support flow control on COM1. The RTS pad provides RS-232level output conversion to COM1 port pin 8. The CTS pad provides RS-232-converted inputfrom COM1 pin 7.The 1, 4, 6, and 9 pins provide RS-232 status. The 1, 4, and 6 pins are connected on the bottomof the development board to provide NULL status to the host. The user may isolate pins andprovide the status connections to the host by applying I/O signals and RS-232 level conversion.TXD0 / GPIOB0GPIOB2MISO / GPIOB6IREQA*SCLK / GPIOB4GPIOB1 / RXD0GPIOB3GPIOB7 / SS*RESET*GPIOB5 / MOSI13795247106GPIO B port provides alternate functionsas SCI (COM1 and indications) and SPIports. IREQ and RESET signals are alsoprovided on this connector.TD0 / GPIOA0TD2 / GPIOA2PWMA2PWMA0PWMA4GPIOA1 / TD1FAULTA0PWMA3PWMA1PWMA513795247106GPIOA0 - 2 port provides alternatefunctions of Timer TD0 - 2 I/O.Note that most of these ports provide auser indication.ANA6ANA4ANA0VREFANA2ANA7ANA5ANA1GNDANA313795247106Analog inputs. Note that ANA2 andANA6 provide Microphone and UserPOT R12 input, respectively.1TXD04GNDRXD06RTS9CTS124536897The COM1 port has a female DB9 connector thatinterfaces to the 56F801 internal SCI0 serial port viathe U8 RS-232 transceiver. It uses a simple 2-wireasynchronous serial interface and is translated toRS-232 signaling levels.1,4,6 connected (host null)