Product specifications

VT8235 V-Link South Bridge

Revision 1.22 October 24, 2002 -3- Product Features

x System Management Bus Interface

− Host interface for processor communications

− Slave interface for external SMBus masters

x Universal Serial Bus Controller

− USB v2.0 and Enhanced Host Controller Interface (EHCI) v1.0 compatible

− USB v1.1 and Universal Host Controller Interface (UHCI) v1.1 compatible

− Eighteen level (doublewords) data FIFO with full scatter and gather capability

− Three root hubs and six function ports

− Integrated physical layer transceivers with optional over-current detection status on USB inputs

− Legacy keyboard and PS/2 mouse support

x Sophisticated PC2001-Compatible Mobile Power Management

− Supports both ACPI (Advanced Configuration and Power Interface) and legacy (APM) power management

− ACPI v1.0 Compliant

− APM v1.2 Compliant

− CPU clock throttling and clock stop control for complete ACPI C0 to C3 state support

− PCI bus clock run, Power Management Enable (PME) control, and PCI/CPU clock generator stop control

− Supports multiple system suspend types: power-on suspends with flexible CPU/PCI bus reset options,

suspend to DRAM, and suspend to disk (soft-off), all with hardware automatic wake-up

− Multiple suspend power plane controls and suspend status indicators

− One idle timer, one peripheral timer and one general purpose timer, plus 24/32-bit ACPI compliant timer

− Normal, doze, sleep, suspend and conserve modes

− Global and local device power control

− System event monitoring with two event classes

− Primary and secondary interrupt differentiation for individual channels

− Dedicated input pins for power and sleep buttons, external modem ring indicator, and notebook lid open/close for

system wake-up

− 32 general purpose input ports and 32 output ports

− Multiple internal and external SMI sources for flexible power management models

− Enhanced integrated real time clock (RTC) with date alarm, month alarm, and century field

− Thermal alarm on external temperature sensing circuit

− I/O pad leakage control

x Plug and Play Controller

− PCI interrupts steerable to any interrupt channel

− Steerable interrupts for integrated peripheral controllers: USB, floppy, serial, parallel, and audio

− Microsoft Windows XP

, Windows NT

, Windows 2000

, Windows 98

and plug and play BIOS compliant

x Built-in NAND-tree pin scan test capability

x 0.22um, 2.5V, low power CMOS process

x Single chip 27 x 27 mm, 1.0 mm ball pitch, 487 pin BGA