General Description

The KBC1100L is an integrated Keyboard/System Management Controller which incorporates a high performance 8051 Micro-Controller, an LPC Bus/Firmware Hub Host Interface and a Super I/O. The KBC1100L is powered by two separate supply planes (VCC1, VCC0) to provide “instant on” and sophisticated system power management functions. The KBC1100L power control circuitry supports multiple low power-down modes.

PRODUCT FEATURES

■ 3.3V Operation with 5V Tolerant Buffers

■ ACPI 1.0b/2.0 and PC99a/PC2001 Compliant

■ LPC Interface with Clock Run Support

   — Serial IRQ Interface Compatible with Serialized IRQ Support for PCI Systems

   — 15 Direct IRQs

   — Three 8-Bit DMA Channels

   — ACPI SCI Interface

   — nSMI

   — Shadowed write only registers

■ LPC/Firmware Hub Host Flash Interface

   — Single Byte FWH Memory Read and FWH Memory Write Support

   — FWH ID Support

   — 16MB FWH Flash and Register Addressing, 128K Legacy BIOS Addressing

   — Single Byte LPC Memory Read and LPC Memory Write Support

■ Serial Peripheral Interface (SPI)

   — 2-pin interface with single Data In/Out Data pin

   — Single Ported Controller with Keeper Circuit

■ 8 MByte Shared FlashROM Interface (SFI)

   — 8051/Host CPU Hardware Arbitrated Interface

   — 0.5 - 8MB - Host System BIOS & 8051 Keyboard

   — 8051 64KB Code Space Accessible as Separate 32KB Pages in Flash

   — Low-Power Flash Access Modes

   — 8051-Programmable Flash Access Protection

   – Read/Write/No-Access Protection

   – Variable Bank Sizes

■ Host Flash Address Redirection for Recovery

■ Serial Flash Programming Interface

■ Two Power Planes

   — Low Standby Current in Sleep Mode

   — Intelligent Auto Power Management for Super I/O

   — Main powered blocks power supplied by standby power plane and controlled by power management signals

■ 3-Port ACPI Embedded Controller Interface

■ Configuration Register Set

   — Compatible with ISA Plug-and-Play Standard (Version 1.0a)

   — Four Pin Selectable Addressing Options

   — 8051-Programmable Base Address

■ High-Performance Embedded 8051 Keyboard and System Controller

   — Provides System Power Management

   — System Watch Dog Timer (WDT)

   — 8042 Style Host Interface Relocatable to 480 Different Base I/O Addresses

   — Supports Interrupt and Polling Access

   — Interrupt Accelerator

   — 512 Bytes Data RAM

   — 2 Kilobytes Scratch ROM/RAM

   — On-Chip Memory-Mapped Control Registers

   — Up to 18x8 Keyboard Scan Matrix

   — Two 16 Bit Timer/Counters

   — Eleven 8051 Interrupt Sources

   — Thirty-Two 8-Bit, Host/8051 Mailbox Registers

   — Thirty-six Maskable Hardware Wake-Up Events

   — Fast GATEA20

   — Fast CPU_RESET

   — Multiple Clock Sources and Operating Frequencies up to 32MHz

   — IDLE and SLEEP Modes

   — Low Power Fail-Safe Ring Oscillator ±10% Accuracy

   — Hibernation Timer with programmable wake-up from 0.5ms to 128 minutes

   — 8051-Driven 16550A UART

   – 16-Byte Send/Receive FIFOs

   – External Baud Clock Option

   — Power-Fail Status Register

■ Battery Backed Resources

   — 32KHz clock generator

   — 1 Week Wakeup timer

■ One 8584-Style SMBus Controller

   — 8051 Host Interface Logic Allows Master or Slave Operation

   — Controllers are Fully Operational on Standby Power

   — 2 Ports per Controller