F20 datasheet(78/111 Pages) ETC2

78 / 111 page

Boxchip F20 Datasheet

Ver 1.01

Page 78

20.

IR Interface

20.1.

IR Overview

Fast Infrared Interface (FIR) signals are multiplexed with UART2 signals using a system

configuration for a complete infrared interface that supports SIR, CIR, MIR, and FIR modes.

The Serial Infrared (SIR) protocol, which supports data rate which supports data rates up to

1.875 Mbit/s, is implemented in each UART module. The IR includes the following features:



Compliant with IrDA 1.1 for MIR and FIR



Full physical layer implementation



Supports 0.576 Mbit/s and 1.152 Mbit/s Medium Infrared (MIR) physical layer protocol



Support 4 Mbit/s FIR physical layer protocol defined by IrDA version 1.4



Support CIR for remote control or wireless keyboard



Hardware CRC16 for MIR and CRC32 for FIR



Dual 16x8-bits FIFO for data transfer



Programmable FIFO thresholds



Interrupt and DMA Support

20.2.

IR Controller Signal Description

Table 20-1. IR Controller Signal Description

Signal

Name

Description

Type

Name

Ball#

IR_TX

IR Transmit Data

PB3

IR_RX

IR Receive Data

PB4

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