Samsung S3F401F - Manual (Page 240)

UART S3F401F_UM_REV1.00
12-2
1.2 IrDA SIR BLOCK
The IrDA SIR block contains an IrDA SIR protocol ENDEC. The SIR protocol ENDEC can be enabled for serial
communication through signals nSIROUT and SIRIN to an infrared transducer instead of using the UART signals
UARTTXD and UARTRXD.
If the SIR protocol ENDEC is enabled, the UARTTXD line is held in the passive state (HIGH) and transitions of the
modem status, or the UARTRXD line have no effect. The SIR protocol ENDEC can receive and transmit, but it is
half-duplex only, so it cannot receive while transmitting, or transmit while receiving.
The IrDA SIR physical layer specifies a minimum 10ms delay between transmission and reception.
1.3 FEATURES
• RxD0, TxD0, RxD1 and TxD1 with interrupt-based operation
• Two UART Channels: UART0 and UART1 with IrDA 1.0 & 16 bytes FIFO
• UART1
• Supports handshake transmit/receive
1.3.1 The UART Provides:
• Programmable use of UART or IrDA SIR input/output.
• Separate 16x8 transmit and 16x12 receive FIFOs (First-In, First-Out memory buffers) to reduce CPU
interrupts.
• Programmable FIFO disabling for 1-byte depth
• Programmable baud rate generator
• Standard asynchronous communication bits (start, stop and parity)
• Independent masking of transmit FIFO, receive FIFO, receive timeout and error condition interrupts.
• False start bit detection.
• Line break generation and detection.
• Fully-programmable serial interface characteristics:
: Data can be 5, 6, 7, or 8 bits
: Even, odd, stick, or no-parity bit generation and detection
: 1 or 2 stop bit generation
: Baud rate generation, dc up to PCLK_max_freq/16