GENERAL DESCRIPTION

This document describes the Consumer Infrared Communications Controller (CIrCC) function, which is common to a number of SMSC products. The CIrCC consists of two main architectural blocks: the ACE 16C550A UART and a Synchronous Communications Engine (SCE) (Figure 2). Each Block is supported by its own unique register set.

FEATURES

• Multi-Protocol Serial Communications Controller

• Full IrDA v1.0 Implementation: 2.4 kbps to 115.2 kbps

• Consumer Infrared Remote Control Interface

• SHARP Amplitude Shift Keyed Infrared (ASK IR) Interface

• Direct Rx/Tx Infrared Diode Control (Raw) and General Purpose Data Pins

• Programmable High-Speed Synchronous Communications Engine (SCE) with a 32- Byte FIFO and Programmable Threshold

• Programmable DMA Refresh Counter

• High-Speed NS16C550A-Compatible Universal Asynchronous Receiver/Transmitter Interface (ACE UART) with 16- Byte Send and Receive FIFOs

• ISA Single-Byte and Burst-Mode DMA and Interrupt-Driven Programmed I/O with Zero Wait State and String Move Timing

• Automatic Transceiver Control

• Transmit Pulse Width Limiter

• SCE Transmit Delay Timer

• IR Media Busy Indicator