PCI Express South Bridge with Advanced Storage Solutions

Product Overview

ULi M1575 is a highly integrated PCI ExpressTM South Bridge that features advanced core technologies designed for desktop and mobile computing applications.

Utilizing the evolutionary PCI ExpressTM bus architecture, M1575 offers system manufacturers with unprecedented design-flexibility. It can be connected to other PCI ExpressTM North Bridge or Switch via the built-in PCI ExpressTM x4 link. With the M1575 configured as an endpoint, a PCI Express™ add-in card with M1575 on-board can easily empower any system with all the latest advanced I/O features such as SATA-3Gbps, HD Audio, 8-port USB 2.0 host controller, 10/100 802.3x MAC, and soft-modem interface etc.

Because of the pin-to-pin compatibility to its predecessor M1573, M1575 is a near direct drop-in to the existing motherboards designed. As such, effort from the motherboard manufacturers to upgrade both the features and the performance of their existing design are minimized.

Designed with advanced storage capabilities, the M1575 features unique support of up to 4-ports AHCI based SATA 3Gbps with NCQ (Native Command Queuing) and two ATA-133 as well as supports RAID 0, RAID 1, RAID 0+1, RAID 5, and JBOD capabilities to provide highly efficient disk management and enhanced overall storage performance.

Incorporating the ULi¡¦s proven power management technology, ULi M1575 is the paramount solution of choice for the increasingly energy efficient mobile PCs and CE devices which need to support variety of multimedia intensive


High Integration South Bridge

  • Integrated with Audio, HSP Modem, LAN, USB, and IDE, M1575 is a high integration bridge between PCI Express, PCI and Peripheral Buses for Desktop and Notebook Systems.

PCI Express Interface

  • Low-overhead, low-latency communications
  • Comprehend different data types and ordering rules
  • Power Management

PCI Interface

  • Supports PCI Master and Slave Interface
  • PCI spec. 2.3 compliant
  • PCI Power Management Interface spec. 1.1 compliant

RAID Support

  • Supports RAID 0, 1, 0+1, 5, JBOD

ports PCI Master and Slave Interface

Serial ATA Host Controller

  • Supports SATA II at 3 Gb/s data rate

Enhanced DMA Controller

  • Provides 7 Programmable Channels, 4 for 8-bit

Interrupt Controller

  • Provides 14 Interrupt Channels
  • Independent Programmable Level/Edge Triggered Channels
  • Integrated IO-APIC capability\
  • Counter/Timers
  • Provides 8254 Compatible Timers for System
  • Timer, Refresh Request, and Speaker Output Use

Serialized IRQ Supported

  • Quiet/Continuous Mode
  • Programmable (Default 21) IRQ/DATA Frames

Built-in Real Time Clock

  • Common calendar year with leap year compensation
  • Binary or BCD data representation
  • 12/24 hour mode
  • Daylight saving time option

PMU Features

  • Full Support for ACPI and OS Directed Power Management
  • Full Support for Instantly Available PC feature
  • CPU SMM Legacy Mode and SMI Feature support
  • Full Support of Clock Control Functions
  • Supports I/O Trap for I/O Restart Feature

USB Interface

  • One EHCI USB 2.0 and three OHCI USB 1.1
  • Host Controllers for supporting up to eight USB ports

Low Pin Count (LPC Rev1.1) Interface

  • Supports LPC interface for legacy devices
  • Supports 2 Master/DMA devices
  • Supports firmware memory cycles with up to 16 byte read

Audio System

  • Intel HD Audio compliant: enable DVD audio, streaming video, Internet phone communications as well as auto switching and detection of audio devices
  • Fully Plug-and-Play PCI controller and software

HD Audio Controller

  • Microsoft Universal Audio Architecture (UAA) compliant
  • 6 generic output stream DMA Engines
  • 5 generic input stream DMA Engines
  • CORB/RIRB support
  • Immediate command/response interface support

Software Modem Interface

Provides AC'97 2.3 compliant digital controller interface for third parties (such as the AMC Codec's vendor) to enable the software modem solution.

1/10/100 Mb/s Fast Ethernet MAC

  • Provides 1/10/100 Mbps Medium Access Control (MAC) controller for the best solution of the phone-line/Ethernet LAN connectivity
  • Compliant with IEEE 802.3u 100BASE-TX, IEEE 802.3 10BASE-T standard

628-Ball (31mmx 31mm) BGA Package

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