Toshiba S2 manual Realtek ALC250VD for AC97 codec, System Unit, Hardware Overview

1.2 System Unit 1 Hardware Overview

?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.

Tecra A3/S2 Series Maintenance Manual 1-11