IR Controller Register Guide

From A10 User manual: Infrared Interface (IR) supports CIR, MIR, and FIR modes. The IR includes the following features:
 * Compliant with IrDA 1.1 for MIR and FIR
 * Full physical layer implementation
 * Support 0.576 Mbit/sec and 1.152 Mbit/sec Medium Infrared (MIR) physical layer protocol
 * Support 4 Mbit/sec 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
 * Support Interrupt and DMA

= IR Controller registers =
 * IR0 base: 0x01c21800
 * IR1 base: 0x01c21c00

IR_CTL

 * Default value: 0x00000000
 * Offset: 0x00

IR_TXCTL

 * Default value: 
 * Offset: 0x04

IR_TXADR

 * Default value: 
 * Offset: 0x08

IR_TXCNT

 * Default value: 
 * Offset: 0x0C