PCI1520ZWT

Controllers Overview

The Texas Instruments PCI1520 is a dual-slot CardBus controller designed for PCI-to-CardBus bridging in notebook and desktop systems. It supports two independent sockets compliant with PC Card Standard rev. 7.1, accommodating mix-and-match 5-V/3.3-V 16-bit PC Cards and 3.3-V CardBus cards. The device operates at PCI clock rates up to 33 MHz using advanced quarter-micron CMOS technology. It features an integrated low-dropout voltage regulator (LDO-VR) eliminating the need for external 2.5-V supplies. The architecture provides pipelined throughput exceeding 130 Mbps and includes hot insertion/removal support.

Controllers Feature Summary

• Supports hot insertion and removal of PC Cards without external buffering
• Integrated low-dropout voltage regulator eliminates external power supply requirements
• Pipelined architecture enables high-throughput burst transfers between CardBus and PCI domains
• Compatible with Intel 82365SL-DF and 82365SL ExCA register sets

Controllers Applications

• Bridging PCI buses to PC Cards in notebook computers
• Bridging PCI buses to PC Cards in desktop computers
• Systems requiring simultaneous 16-bit and CardBus card operation

Controllers Procurement Notes

Verify package availability as the component is offered in both 208-terminal LQFP and 209-ball PBGA configurations. Confirm industrial temperature variants if operating conditions exceed standard ranges. Ensure design compliance with PCI Bus Power Management Interface Specification rev. 1.1 during integration.

Controllers Selection Notes

Select the PCI1520 when dual-slot PC Card connectivity is required on a PCI bus. Choose this controller for designs needing integrated power regulation and support for mixed voltage PC Cards. Verify that the host system accommodates the specific pinout of either the PDV or GHK/ZHK package options available.

Controllers Part Context

This component belongs to the Texas Instruments PCI Bus Solutions family, specifically targeting legacy expansion interfaces. It serves as a bridge between modern PCI architectures and older PC Card standards. The device maintains register compatibility with established Intel controllers to facilitate straightforward migration and design reuse.

Controllers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.