3. 引脚复用

引脚	功能2	功能3	功能4	功能5	功能6	功能8
PA0	GPAI0	IR_TX	I2C0_SCL	UART0_TX		CPU_NMI
PA1	GPAI1	IR_RX	I2C0_SDA	UART0_RX		DE_TE
PA2	GPAI2	CAN1_TX	I2C1_SCL	UART1_TX		UART2_CTS
PA3	GPAI3	CAN1_RX	I2C1_SDA	UART1_RX		UART2_RTS
PA4	GPAI4		CAN0_TX	UART2_TX
PA5	GPAI5		CAN0_RX	UART2_RX
PA8	RTP_XP		I2C0_SCL
PA9	RTP_YP		I2C0_SDA
PA10	RTP_XN	IR_RX				JTAG_MS
PA11	RTP_YN	IR_TX				JTAG_CK
PB0	SPI0_WP	SPI1_WP		UART0_TX
PB1	SPI0_MISO	SPI1_MISO		UART2_TX
PB2	SPI0_CS0	SPI1_CS		UART2_RX
PB3	SPI0_HOLD	SPI1_HOLD		UART0_RX
PB4	SPI0_CLK	SPI1_CLK		UART2_RTS
PB5	SPI0_MOSI	SPI1_MOSI		UART0_RTS	UART2_CTS
PB6	SDC0_CMD	SPI1_CS		UART1_TX
PB7	SDC0_CLK	SPI1_MISO		UART1_RX
PB8	SDC0_D3	SPI1_MOSI		UART1_RTS	UART3_CTS
PB9	SDC0_D0	SPI1_CLK		UART3_RTS
PB10	SDC0_D1	SPI1_HOLD		UART3_TX
PB11	SDC0_D2	SPI1_WP		UART3_RX
PC0	SDC1_D1		I2C0_SCL	UART3_RTS		JTAG_MS
PC1	SDC1_D0
PC2	SDC1_CLK					UART0_TX
PC3	SDC1_CMD
PC4	SDC1_D3	PWM0_A	I2C1_SCL	UART3_TX		UART0_RX
PC5	SDC1_D2	PWM0_B	I2C1_SDA	UART3_RX		JTAG_CK
PC6	SDC1_DET	PWM1_A	I2C0_SDA	UART3_CTS	DE_TE	IR_RX
PC7		PWM1_B				IR_TX
PD0	LCD_D0	CAN0_TX	I2C0_SCL	UART0_TX
PD1	LCD_D1	CAN0_RX	I2C0_SDA	UART0_RX
PD2	LCD_D2	CAN1_TX	I2C1_SCL	UART1_TX
PD3	LCD_D3	CAN1_RX	I2C1_SDA	UART1_RX
PD4	LCD_D4		I2C1_SCL	UART2_TX
PD5	LCD_D5		I2C1_SDA	UART2_RX
PD6	LCD_D6		PWM0_A	DSPK0
PD7	LCD_D7		PWM0_B	DSPK1
PD8	LCD_D8		PWM1_A
PD9	LCD_D9
PD10	LCD_D10
PD11	LCD_D11
PD12	LCD_D12
PD13	LCD_D13
PD14	LCD_D14
PD15	LCD_D15
PD16	LCD_D16
PD17	LCD_D17
PD18	LCD_D18
PD19	LCD_D19
PD20	LCD_D20
PD21	LCD_D21
PD22	LCD_D22
PD23	LCD_D23
PD24	LCD_DCLK
PD25	LCD_HS				PWM0_B
PD26	LCD_VS				PWM1_A
PD27	LCD_DE				PWM1_B
PE12		PWM1_B		DSPK1
PE13		PWM0_A		DSPK0