Functional Description

IN16C1054 is a quad UART(Universal Asynchronous Receiver/Transmitter) with 256-byte FIFO supporting maximum communication speed of 5.3Mbps. It offers flow control function by hardware or software and signal lines which can open or close the Tx/Rx input/output when communicating by RS-422 or RS-485. It can handle four interrupt signals (INT0, INT1, INT2 and INT3) with one global interrupt signal line (GINT) and offers a new ‘Xoff re-transmit’ function in addition to Xon any character.

Features

• 4 Channel UART

• 3.3V Operation

• 5V Tolerant Inputs

• Pin-to-pin Compatible with Industry Standard SB16C554 with Additional

• Enhancements

• Up to 5.3 Mbps Baud Rate (Up to 85 MHz Oscillator Input Clock)

• 256-byte Transmit FIFO

• 256-byte Receive FIFO with Error Flags

• Industrial Temperature Range (-20 to +85 ) ℃ ℃

• Programmable and Selectable Transmit and Receive FIFO Trigger Levels for DMA

• and Interrupt Generation

• Software (Xon/Xoff) / Hardware (RTS#/CTS#) Flow Control

- Programmable Xon/Xoff Characters

- Programmable Auto-RTS and Auto-CTS

• Global Interrupt Mask/Poll Control

• Optional Data Flow Resume by Xon Any Character Control

• Optional Data Flow Additional Halt by Xoff Retransmit Control

• RS-422 Point to Point/Multi-Drop Control

• RS-485 Echo/Non Echo Control

• DMA Signaling Capability for Both Received and Transmitted Data

• Software Selectable Baud Rate Generator

• Prescaler Provides Additional Divide-by-4 Function

• Fast Data Bus Access Time

• Programmable Sleep Mode

• Programmable Serial Interface Characteristics

- 5, 6, 7, or 8-bit Characters

- Even, Odd, or No Parity Bit Generation and Detection

- 1, 1.5, or 2 Stop Bit Generation

• False Start Bit Detection

• Line Break Generation and Detection

• Fully Prioritized Interrupt System Controls

• Modem Control Functions (RTS#, CTS#, DTR#, DSR#, DCD#, and RI#)