11.1.2 Interfacing in USART Mode

Ten FLEXCOM interfaces configurable in Universal Synchronous Asynchronous Receiver Transceiver (USART) modes are available on the SAMA7D65 SOM Series.

Table 11-2. USART Interface Configurations
Interface Instance	IO Set	Pin No.	PIO	Pin Name	Description
FLEXCOM0	2	179	PC7	FLEXCOM0_IO0	UART Transmit Data Line (TXD)
FLEXCOM0	2	182	PC6	FLEXCOM0_IO1	UART Receive Data Line (RXD)
FLEXCOM1	1	123	PD7	FLEXCOM1_IO0	UART Transmit Data Line (TXD)
FLEXCOM1	1	122	PD6	FLEXCOM1_IO1	UART Receive Data Line (RXD)
FLEXCOM1	2	210	PC14	FLEXCOM1_IO0	UART Transmit Data Line (TXD)
FLEXCOM1	2	208	PC15	FLEXCOM1_IO1	UART Receive Data Line (RXD)
FLEXCOM1	3	191	PB28	FLEXCOM1_IO0	UART Transmit Data Line (TXD)
FLEXCOM1	3	194	PB29	FLEXCOM1_IO1	UART Receive Data Line (RXD)
FLEXCOM2	1	15	PE8	FLEXCOM2_IO0	UART Transmit Data Line (TXD)
FLEXCOM2	1	16	PE9	FLEXCOM2_IO1	UART Receive Data Line (RXD)
FLEXCOM2	4	45	PB15	FLEXCOM2_IO0	UART Transmit Data Line (TXD)
FLEXCOM2	4	44	PB14	FLEXCOM2_IO1	UART Receive Data Line (RXD)
FLEXCOM3	2	38	PA24	FLEXCOM3_IO0	UART Transmit Data Line (TXD)
FLEXCOM3	2	39	PA23	FLEXCOM3_IO1	UART Receive Data Line (RXD)
FLEXCOM3	3	126	PD1	FLEXCOM3_IO0	UART Transmit Data Line (TXD)
FLEXCOM3	3	127	PD2	FLEXCOM3_IO1	UART Receive Data Line (RXD)
FLEXCOM3	4	7	PA14	FLEXCOM3_IO0	UART Transmit Data Line (TXD)
FLEXCOM3	4	5	PA15	FLEXCOM3_IO1	UART Receive Data Line (RXD)
FLEXCOM4	1	3	PA18	FLEXCOM4_IO0	UART Transmit Data Line (TXD)
FLEXCOM4	1	6	PA17	FLEXCOM4_IO1	UART Receive Data Line (RXD)
FLEXCOM5	1	80	PD16	FLEXCOM5_IO0	UART Transmit Data Line (TXD)
FLEXCOM5	1	79	PD17	FLEXCOM5_IO1	UART Receive Data Line (RXD)
FLEXCOM5	2	61	PE3	FLEXCOM5_IO0	UART Transmit Data Line (TXD)
FLEXCOM5	2	59	PE2	FLEXCOM5_IO1	UART Receive Data Line (RXD)
FLEXCOM6	2	141	PB24	FLEXCOM6_IO0	UART Transmit Data Line (TXD)
FLEXCOM6	2	143	PB25	FLEXCOM6_IO1	UART Receive Data Line (RXD)
FLEXCOM6	3	69	PD24	FLEXCOM6_IO0	UART Transmit Data Line (TXD)
FLEXCOM6	3	57	PD25	FLEXCOM6_IO1	UART Receive Data Line (RXD)
FLEXCOM6	4	73	PD18	FLEXCOM6_IO0	UART Transmit Data Line (TXD)
FLEXCOM6	4	74	PD19	FLEXCOM6_IO1	UART Receive Data Line (RXD)
FLEXCOM7	1	85	PD8	FLEXCOM7_IO0	UART Transmit Data Line (TXD)
FLEXCOM7	1	88	PD9	FLEXCOM7_IO1	UART Receive Data Line (RXD)
FLEXCOM7	2	58	PD27	FLEXCOM7_IO0	UART Transmit Data Line (TXD)
FLEXCOM7	2	67	PD28	FLEXCOM7_IO1	UART Receive Data Line (RXD)
FLEXCOM7	3	124	PD5	FLEXCOM7_IO0	UART Transmit Data Line (TXD)
FLEXCOM7	3	121	PD4	FLEXCOM7_IO1	UART Receive Data Line (RXD)
FLEXCOM8	2	95	PC27	FLEXCOM8_IO0	UART Transmit Data Line (TXD)
FLEXCOM8	2	96	PC28	FLEXCOM8_IO1	UART Receive Data Line (RXD)
FLEXCOM8	3	142	PB26	FLEXCOM8_IO0	UART Transmit Data Line (TXD)
FLEXCOM8	3	145	PB27	FLEXCOM8_IO1	UART Receive Data Line (RXD)
FLEXCOM9	1	204	PC8	FLEXCOM9_IO0	UART Transmit Data Line (TXD)
FLEXCOM9	1	202	PC9	FLEXCOM9_IO1	UART Receive Data Line (RXD)
FLEXCOM9	2	180	PC3	FLEXCOM9_IO0	UART Transmit Data Line (TXD)
FLEXCOM9	2	178	PC4	FLEXCOM9_IO1	UART Receive Data Line (RXD)

Table 11-3. USART Interface Configurations with Flow Control
Interface Instance	IO Set	Pin No.	PIO	Pin Name	Description
FLEXCOM0	2	179	PC7	FLEXCOM0_IO0	Transmit Data
		182	PC6	FLEXCOM0_IO1	Receive Data
		178	PC4	FLEXCOM0_IO3	Clear To Send/Chip select
		180	PC3	FLEXCOM0_IO4	Request To Send/Chip select
FLEXCOM1	1	123	PD7	FLEXCOM1_IO0	Transmit Data
		122	PD6	FLEXCOM1_IO1	Receive Data
		124	PD5	FLEXCOM1_IO3	Clear To Send/Chip select
		125	PD3	FLEXCOM1_IO4	Request To Send/Chip select
FLEXCOM1	2	210	PC14	FLEXCOM1_IO0	Transmit Data
		208	PC15	FLEXCOM1_IO1	Receive Data
		207	PC17	FLEXCOM1_IO3	Clear To Send/Chip select
		199	PC18	FLEXCOM1_IO4	Request To Send/Chip select
FLEXCOM2	1	15	PE8	FLEXCOM2_IO0	Transmit Data
		16	PE9	FLEXCOM2_IO1	Receive Data
		10	PE5	FLEXCOM2_IO3	Clear To Send/Chip select
		12	PE6	FLEXCOM2_IO4	Request To Send/Chip select
FLEXCOM3	2	38	PA24	FLEXCOM3_IO0	Transmit Data
		39	PA23	FLEXCOM3_IO1	Receive Data
		37	PA21	FLEXCOM3_IO3	Clear To Send/Chip select
		41	PA20	FLEXCOM3_IO4	Request To Send/Chip select
FLEXCOM4	1	3	PA18	FLEXCOM4_IO0	Transmit Data
		6	PA17	FLEXCOM4_IO1	Receive Data
		5	PA15	FLEXCOM4_IO3	Clear To Send/Chip select
		7	PA14	FLEXCOM4_IO4	Request To Send/Chip select
FLEXCOM5	1	80	PD16	FLEXCOM5_IO0	Transmit Data
		79	PD17	FLEXCOM5_IO1	Receive Data
		82	PD15	FLEXCOM5_IO3	Clear To Send/Chip select
		84	PD13	FLEXCOM5_IO4	Request To Send/Chip select
FLEXCOM5	2	61	PE3	FLEXCOM5_IO0	Transmit Data
		59	PE2	FLEXCOM5_IO1	Receive Data
		62	PE1	FLEXCOM5_IO3	Clear To Send/Chip select
		64	PD31	FLEXCOM5_IO4	Request To Send/Chip select
FLEXCOM6	2	141	PB24	FLEXCOM6_IO0	Transmit Data
		143	PB25	FLEXCOM6_IO1	Receive Data
		140	PB22	FLEXCOM6_IO3	Clear To Send/Chip select
		139	PB21	FLEXCOM6_IO4	Request To Send/Chip select
FLEXCOM6	3	69	PD24	FLEXCOM6_IO0	Transmit Data
		57	PD25	FLEXCOM6_IO1	Receive Data
		70	PD22	FLEXCOM6_IO3	Clear To Send/Chip select
		66	PD23	FLEXCOM6_IO4	Request To Send/Chip select
FLEXCOM6	4	73	PD18	FLEXCOM6_IO0	Transmit Data
		74	PD19	FLEXCOM6_IO1	Receive Data
		70	PD22	FLEXCOM6_IO3	Clear To Send/Chip select
		66	PD23	FLEXCOM6_IO4	Request To Send/Chip select
FLEXCOM7	1	85	PD8	FLEXCOM7_IO0	Transmit Data
		88	PD9	FLEXCOM7_IO1	Receive Data
		86	PD11	FLEXCOM7_IO3	Clear To Send/Chip select
		83	PD12	FLEXCOM7_IO4	Request To Send/Chip select
FLEXCOM7	2	58	PD27	FLEXCOM7_IO0	Transmit Data
		67	PD28	FLEXCOM7_IO1	Receive Data
		65	PD30	FLEXCOM7_IO3	Clear To Send/Chip select
		68	PD26	FLEXCOM7_IO4	Request To Send/Chip select
FLEXCOM8	2	95	PC27	FLEXCOM8_IO0	Transmit Data
		96	PC28	FLEXCOM8_IO1	Receive Data
		94	PC30	FLEXCOM8_IO3	Clear To Send/Chip select
		92	PC31	FLEXCOM8_IO4	Request To Send/Chip select
FLEXCOM9	1	204	PC8	FLEXCOM9_IO0	Transmit Data
		202	PC9	FLEXCOM9_IO1	Receive Data
		201	PC11	FLEXCOM9_IO3	Clear To Send/Chip select
		205	PC12	FLEXCOM9_IO4	Request To Send/Chip select