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1.2 System Unit 1 Hardware Overview
Tecra A3/S2 Series Maintenance Manual 1-11
? High Speed 16C550A Compatible UARTs with Send/Receive 16-Byte FIFO
? Supports 230k and 460k Baud
? Programmable Baud Rate Generator
? Modem Control Circuitry
Infrared Communications Controller
? IrDA v1.2 (4Mbps), HPSIR, ASKIR, Consumer IR Support
? 1 IR Ports
? 96 Base I/O Address, 15 IRQ Options and 3 DMA Options
Multi-Mode Parallel Port with ChiProtect
? Standard Mode IBM PC/XT, PC/AT,
? PS/2 Compatible Bidirectional Parallel Port
? Enhanced Parallel Port (EPP)
Compatible – EPP 1.7 and EPP 1.9 (IEEE 1284 Compliant)
? IEEE 1284 Compliant Enhanced Capabilities Port (ECP)
? ChiProtect Circuitry for Protection Against Damage Due to Printer Power-On
? 192 Base I/O Address, 15 IRQ and 3 DMA Options
LPC Bus Host Interface
? Multiplexed Command, Address and Data Bus
? 8-Bit I/O Transfers
? 8-Bit DMA Transfers
? 16-Bit Address Qualification
? Serial IRQ Interface Compatible with Serialized Serial IRQ Interface Compatible
with Serialized IRQ Support for PCI Systems
? PCI CLKRUN# Support
? Power Management Event(IO_PME#)Interface Pin
? Keyboard controller
? KB910L is use as keyboard controller and battery management unit
? Audio subsystem
Realtek ALC250VD for AC97 codec
? Support of S’PDIF out is fully compliant with AC97 rev2.3 specification.
? 20-bit Stereo Digital-to-Analog Converters.
? 18-bit Stereo Analog-to-Digital Converters.
? Built-in 7 Bands of Digital Hardware Equalizer for Optimizing Speaker Response.
? Supports double sampling (96KHz) of DVD audio playback.
? Two Analog Line-level Stereo Inputs with LIN_IN, CD, and AUX.
? Two Analog Line-level Mono Inputs : PCBEEP, PHONE-IN.
? Two software selectable Microphone Inputs.
? High quality differential CD Input.
? Power Management and enhanced power saving features.
? Meets Microsoft® WHQL/WLP2.0 audio Requirements.