General Description
The KBC1102 is an integrated Keyboard/System Management Controller which incorporates a high-performance 8051 Micro-Controller, an LPC Bus Interface which provides a Firmware Hub Interface and integrated Super I/O/LPC Resources. The KBC1102 is powered by two separate supply planes (VCC1, VCC0) to provide “instant on” and sophisticated system power management functions. The KBC1102 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
    — 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)
    — Dual 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
    — 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
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