SiS5595 General Description
SiS5595 Features
` Integrated PCI-to-ISA Bridge
- Translates PCI Bus Cycles into ISA Bus Cycles.
- Translates ISA Master or DMA Cycles into PCI Bus Cycles.
- Provides a Dword Post Buffer for PCI to ISA Memory cycles.
- Two 32 bit Prefetch/Post Buffers Enhance the DMA and ISA Master Performance.
- Fully Compliant to PCI 2.1.
` Supports both Desktop and Mobile Advanced Power Management Logic
- Meets ACPI 1.0 Requirements.
- Supports Both ACPI and Legacy PMU.
- Supports Suspend to RAM.
- Supports Suspend to Hard Disk.
- Optionally Tri-state ISA bus in low power state.
- Supports Battery Management and LB/LLB/AC Indicator.
- Supports CPU's SMM Mode Interface.
- Supports CPU Stop Clock.
- Supports Power Button of ACPI.
- Supports three system timers and SMI# watchdog timer.
- Supports Automatic Power Control.
- Supports Modem Ring-in, RTC Alarm Wake up.
- Supports Thermal Detection.
- Supports GPIOs, and GPOs for External Devices Control.
- Supports Programmable Chip Select.
- Supports PCI Bus Power Management Interface Spec. 1.0 .
- Supports Pentium II Sleep State.
` Enhanced DMA Functions
- 8-, 16- bit DMA Data Transfer.
- Two 8237A Compatible DMA Controllers with Seven Independent Programmable Channels.
- Provide the Readability of the two 8237 Associated Registers.
- Support Distributed DMA.
- Support PC/PCI DMA.
- Per DMA channel programmable in legacy, DDMA or PC/PCI DMA mode operation.
` Integrated Two 8259A Interrupt Controllers
- 14 Independently Programmable Channels for Level- or Edge-triggered Interrupts.
- Provide the Readability of the two 8259A Associated Registers.
- Support Serial IRQ.
- Support the Reroutability for the PCI Interrupts.
` Three Programmable 16-bit Counters compatible with 8254
- System Timer Interrupt.
- Generate Refresh Request.
- Speaker Tone Output.
- Provide the Readability of the 8254 Associated Registers.
` Integrated Keyboard Controller
- Hardwired Logic Provides Instant Response.
- Supports PS/2 Mouse Interface.
- Supports Keyboard Password Security or Hot Key Power On Function.
- Supports Hot Key "Sleep" Function.
- Programmable Enable and Disable for Keyboard Controller and PS/2 Mouse.
` Integrated Real Time Clock(RTC) with 256B CMOS SRAM
- Supports ACPI Day of Month Alarm/Month Alarm.
- Supports various Power Up events, such as Button Up, Alarm Up, Ring Up, GPIO5/PME0# Up, GPIO10/ PME1# Up, Password Security Up, and Hotkey Up.
- Supports various Power Down Events, like Software Power-down, Button Powerdown, and ACPI S3 Power-down.
- Supports Power Supply '98.
- Provides RTC year 2000 solution.
` Integrated Frequency Ratio Control Logic for Pentium II CPU
` Universal Serial Bus Host Controller
- Open HCI Host Controller with Root Hub.
- Two USB Ports.
- Supports Legacy Devices.
- Supports Over Current Detection.
` Integrated Hardware Monitor Logic
- Up to 5 Positive Voltage Monitoring Inputs.
- Two Fan Speed Monitoring Inputs.
- One Temperature Sensings.
- Supports thermister- or diode- temperature sensing for Pentium II CPU.
- Threshold Comparison of all Monitored Values.
` Supports I2C Serial Bus/ SMBUS
` Supports 2MB Flash ROM Interface
` 208 pins PQFP Package
` 5V CMOS Technology
SiS5595 Connection Diagram
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