Description

The T82C54M-2 is an electronic component in the IC Chips product category. It is a PC97 Compliant PCI-to-ISA Bridge with various integrated features such as ACPI, distributed DMA, plug and play, keyboard controller, USB controller, and real-time clock. It also has an integrated master mode PCI IDE controller with UltraDMA-33 support. The T82C54M-2 is compatible with VIA and other host-to-PCI bridges, making it suitable for a wide range of systems. It offers enhanced master mode PCI IDE controller with support for UltraDMA-33, a universal serial bus controller, and sophisticated PC97-compatible power management features. The T82C54M-2 is pin-compatible with VT82C586 and VT82C586A for easy upgrade in existing designs.

Specifications and features

• PC97 Compliant PCI to ISA Bridge

- Integrated ISA Bus Controller with integrated DMA, timer, and interrupt controller

- Integrated Keyboard Controller with PS2 mouse support

- Integrated DS12885-style Real-Time Clock with extended 256-byte CMOS RAM and Day/Month Alarm for ACPI

- Integrated USB Controller with root hub and two function ports

- Integrated master mode enhanced IDE controller with enhanced PCI bus commands and UltraDMA-33 extensions

- PCI-2.1 compliant with delay transaction

- Eight double-word line buffer between PCI and ISA bus

- One level of PCI to ISA post-write buffer

- Supports type F DMA transfers

- Distributed DMA support for ISA legacy DMA across the PCI bus

- Fast reset and Gate A20 operation

- Edge trigger or level sensitive interrupt

- Flash EPROM, 2MB EPROM, and combined BIOS support

- Programmable ISA bus clock

- Supports external IOAPIC interface for symmetrical multiprocessor configurations

• Inter-operable with VIA and other Host-to-PCI Bridges

- Combine with VT82C585VPX/587VP for a complete 75MHz 6x86 / PCI / ISA system (Apollo VPX)

- Combine with VT82C595 for a complete Pentium / PCI / ISA system (Apollo VP2)

- Combine with VT82C685/687 for a complete Pentium-Pro /PCI / ISA system (Apollo P6)

- Combine with VIA Apollo-AGP and Apollo Pro chipsets for new high-performance / enhanced-functionality systems

- Inter-operable with other Intel or non-Intel Host-to-PCI bridges for a complete PC97 compliant PCI/ISA system

• Enhanced Master Mode PCI IDE Controller with Extension to UltraDMA-33

- Dual channel master mode PCI supporting four Enhanced IDE devices

- Transfer rate up to 33MB/sec to cover PIO mode 4, multi-word DMA mode 2 drives, and UltraDMA-33 interface

- Sixteen levels (doublewords) of prefetch and write buffers

- Interlaced commands between two channels

- Bus master programming interface for SFF-8038i rev.1.0 and Windows-95 compliant

- Full scatter gather capability

- Support ATAPI compliant devices including DVD devices

- Support PCI native and ATA compatibility modes

- Complete software driver support

• Universal Serial Bus Controller

- USB v.1.0 and Intel Universal HCI v.1.1 compatible

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

- Root hub and two function ports

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

- Legacy keyboard and PS/2 mouse support

• Sophisticated PC97-Compatible Power Management

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

- ACPI v1.0 Compliant (all required features plus extensions for most efficient desktop power management)

- APM v1.2 Compliant

- Supports soft-off (suspend to disk) and power-on suspend with hardware automatic wake-up

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

- Dedicated input pin for external modem ring indicator for system wake-up

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

- Normal, doze, sleep, suspend, and conserve modes

- System event monitoring with two event classes

- Five multi-purpose I/O pins plus support for up to 16 general-purpose input ports and 16 output ports

- I2C serial bus support for JEDEC-compatible DIMM identification and on-board-device power control

- Seven external event input ports with programmable SMI condition

- Primary and secondary interrupt differentiation for individual channels

- Clock throttling control

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

• Plug and Play Controller

- PCI interrupts steerable to any interrupt channel

- Three steerable interrupt channels for on-board plug and play devices

- Microsoft Windows 95TM and plug and play BIOS compliant

• Pin-compatible upgrade from VT82C586 and VT82C586A for existing designs

• Built-in Nand-tree pin scan test capability

• 0.5um mixed voltage, high speed, and low power CMOS process

• Single chip 208 pin PQFP

Application Scenarios

The T82C54M-2 can be used in various electronic systems that require a PCI-to-ISA bridge, enhanced IDE controller, USB controller, and power management capabilities. It is suitable for desktop computers, industrial control systems, and high-performance systems.

Comparison

- PC97 compliant and compatible with various host-to-PCI bridges

- Integrated features such as ACPI, distributed DMA, plug and play, and real-time clock

- Enhanced master mode PCI IDE controller with UltraDMA-33 support

- Universal Serial Bus Controller with USB v.1.0 and Intel Universal HCI v.1.1 compatibility

- Sophisticated PC97-compatible power management features with support for ACPI and legacy power management

- Pin-compatible upgrade for easy integration into existing designs

- Built-in Nand-tree pin scan test capability for easier testing

- 0.5um mixed voltage, high-speed, and low-power CMOS process

- Single chip design for space-saving installation

- Limited compatibility with older systems or non-PC97 compliant devices