User Guide

Hardware Functional Overview

4-16 FIC MB02 Service Manual

32-bit CardBus R3 cards. The R2 card support is compatible with the Intel 82365SL PCIC

controller, and the R3 card support is fully compliant with the 2000 PC Card Standard

CardBus specification. The R5C551 is an additional buffer chip for the PC Card socket

interface. In addition, the R5C551 supports dynamic PC Card hot insertion and removal,

with auto configuration capabilities.

The R5C551 is fully complains with the 33Mhz PCI Bus specification, v2.2. It supports a

master device with internal CardBus direct data transfer. The R5C551 implements FIFO

data buffer architecture between the PCI bus and CardBus socket interface to enhance data

transfers to CardBus Devices. The bi-directional FIFO buffer permits the R5C551 to

accept data from a target bus (PCI or CardBus interface) while simultaneously transferring

data. This architecture not only speeds up data transfers but also prevents system deadlocks.

The R5C551 is a PCMCIA R2/CardBus controller, providing the most advanced design

flexibility for PC Cards that interface with advanced notebook designs.

R5C551 FEATURES – Slot Solution

• Supports only one PCMCIA 2.1 and JEIDA 4.2 R2 cards or 2 CardBus cards

• ACPI-PCI Bus Power Management Interface Specification Rev 1.1 Compliant

• Supports OnNow LAN wakeup, OnNow Ring Indicate, PCI CLKRUN#, PME#,

and CardBus CCLKRUN#

• Compliant with the 33Mhz PCI Specification V2.2, 2000 PC Card Standard 7.1 for

R5C551

• Yenta™ PCI to PCMCIA CardBus Bridge register compatible

• ExCA (Exchangeable Card Architecture) compatible registers map-able in

memory and I/O space

• Intel™ 82365SL PCIC Register Compatible

• Supports PCMCIA_ATA Specification

• Supports 5V/3.3V PC and 3.3V Cardbus cards

• Supports two PC Card or CardBus slots with hot insertion and removal

• Supports multiple FIFOs for PCI/CardBus data transfer

• Supports Direct Memory Access for PC/PCI and PCI/Way on PC Card socket

• Programmable interrupt protocol: PCI, PCI+ISA, PCI/Way, or PC/PCI interrupt

signaling modes

• Win'98 IRQ and PC-98/99 compliant

• Parallel or Serial interface for socket power control devices including Micrel and

• Integrated PC 98/99 -Subsystem Vendor ID support, with auto lock bit

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