CIRCC Datasheet | SMSC

CIr CC Consumer Infrared munications Controller Features - - - - - - Multi-Protocol Serial munications Controller Full Ir DA 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 munications Engine (SCE) with a 32Byte FIFO and Programmable Threshold - - Programmable DMA Refresh Counter High-Speed NS16C550A-patible Universal Asynchronous Receiver/ Transmitter Interface (ACE UART) with 16Byte 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 - - - - - GENERAL DESCRIPTION .. This document describes the Consumer Infrared munications Controller (CIr CC) function, which is mon to a number of SMSC products. The CIr CC consists of two main architectural blocks: the ACE 16C550A UART and a Synchronous munications Engine (SCE) (Figure 2). Each Block is supported by its own unique register set. The CIr CC UART-driven Ir DA SIR and SHARP ASK modes are backward-patible with early SMSC Super I/O and Ultra I/O infrared implementations. The CIr CC SCE supports Ir DA version 1.0 and consumer IR modes. All of the SCE modes use DMA. The CIr CC offers flexible signal routing and programmable output control through the Raw mode interface, General Purpose Data pins and Output Multiplexer. Hardware decoding of the NEC PPM Consumer IR Remote Control format is implemented in the CIr CC. The CIr CC provides a PME output signal that is used to indicate the occurrence of a valid CIR Wake-up event. Chip-level address decoding is required to access the CIr CC register sets. TABLE OF CONTENTS Features .................................................................................