PCI4520GHK

Overview

The Texas Instruments PCI4520GHK is an integrated dual-socket PC Card controller featuring an IEEE 1394a-2000 Open Host Controller Interface (OHCI) link-layer controller and a two-port PHY. It bridges the 33-MHz PCI bus to PC Cards and IEEE 1394 buses, supporting data transfer rates of 100M, 200M, and 400M bits/s. The device operates with a 1.8-V core logic and 3.3-V I/O cells, utilizing an internal voltage regulator. It supports hot insertion/removal, PCI power management states D0-D3, and requires an external 24.576-MHz crystal for cable port synchronization.

Feature Summary

• Dual-function integration: PC Card/CardBus controller compliant with PC Card Standard 8.0 and IEEE 1394a-2000 OHCI controller
• Two-port IEEE 1394 PHY supporting S100, S200, and S400 speeds with separate cable bias (TPBIAS)
• PCI Local Bus Specification Revision 2.2 compliance with support for 132-MBps burst transfers
• Advanced power management features including ACPI compliance, sleep modes, and automatic device power down

Applications

• High-volume PC applications requiring combined PC Card and FireWire connectivity
• Systems needing bridge functionality between PCI bus and PC Cards or IEEE 1394 networks
• Battery-powered devices requiring low-power modes and energy conservation features

Procurement Notes

The PCI4520GHK is listed as OBSOLETE in the manufacturer's documentation. Verify current availability status directly with Texas Instruments or authorized distributors before design inclusion. Confirm package details and moisture sensitivity levels for production readiness.

Selection Notes

Select this component for designs requiring a single-chip solution for both PC Card sockets and dual IEEE 1394 ports. Ensure the system provides a 24.576-MHz crystal reference for the PHY layer. Verify compatibility with 3.3-V and 5-V PCI signaling environments and confirm that the 257-LFBGA package fits the board layout constraints.

Part Context

This device integrates functions typically handled by separate controllers, combining the Intel 82365SL-DF compatible PC Card interface with a full IEEE 1394a-2000 OHCI implementation. It replaces discrete solutions for legacy PC Card slots and modern serial bus connections in portable and desktop computing architectures.

Replacement Considerations

The datasheet lists the PCI4520ZHK as an alternative package variant within the same product family. No other cross-model substitutes are documented.