Texas Instruments PCI1520IPDVEP

Overview

The PCI1520IPDVEP from Texas Instruments is a dual-slot PCI-to-CardBus bridge controller in 208-pin LQFP (PDV) package, implementing full 32-bit PCI 2.2 and PC Card Standard Rev. 7.1 compliance. It supports hot-plug insertion/removal of mixed 16-bit PC Cards (5 V/3.3 V) and 32-bit CardBus cards (3.3 V only), delivers >130 Mbps sustained throughput via pipelined burst transfers, and integrates an LDO-VR for on-chip 2.5-V core supply - enabling notebook and desktop add-in card designs with minimal external power components.

For engineers reviewing the PCI1520IPDVEP datasheet, PCI1520IPDVEP pinout, PCI1520IPDVEP application, or PCI1520IPDVEP equivalent, this page provides verified technical context, confirmed pin functions, real-world socket-level use cases, and validated alternative controllers for PC Card subsystem design and legacy PCI expansion.

Technical Context

The PCI1520IPDVEP implements a register-compatible ExCA-compliant bridge architecture with two independent socket interfaces, each supporting full PCI-to-CardBus protocol translation including memory-mapped I/O windowing (2 I/O + 2 memory windows per CardBus socket) and legacy 16-bit PC Card access (5 memory + 2 I/O windows). Its internal 32-bit data path enables native 8/16/32-bit card access using full 32-bit PCI cycles.

It features integrated power management logic compliant with PCI Bus Power Management Interface Spec Rev. 1.1 and ACPI 1.1, supporting Suspend Mode, CLKRUN protocol, CardBus CCLKRUN, and ring-indicate signaling. The device uses advanced quarter-micron CMOS to achieve ultralow-power operation at 33 MHz PCI clock frequency while maintaining full hot-swap robustness via internal buffering.

Key Specifications

Pinout & Package

PCI1520IPDVEP is housed in a 208-pin LQFP (PDV) package with 0.5-mm pitch, 28 × 28 mm body size, and exposed thermal pad. Pin functions are defined per Table 2−1 (Signal Names by PDV Terminal Number) in the SCPS065D datasheet.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar PCI-to-CardBus bridge applications.

Compared with PCI1520IPDVEP, the PCI1510IPDVEP reduces socket count but preserves pin compatibility for footprint-constrained upgrades, while the 82365SL-DF demands external core regulation yet offers identical register-level interoperability for drop-in driver reuse.

Availability

PCI1520IPDVEP is available at Aetrix Electronics and suitable for notebook docking stations, industrial PCMCIA carrier boards, and legacy PCI-based video capture systems requiring stable component supply, long-lifecycle support, and industrial-grade temperature operation.

Supply support for PCI1520IPDVEP includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader focused on analog, embedded processing, and connectivity technologies, with decades of leadership in PC Card and mobile interface solutions.

The PCI1520IPDVEP belongs to TI's PC Card controller product line, engineered specifically for seamless PCI-to-CardBus bridging in space- and power-constrained portable and industrial systems requiring hot-swap reliability and OS-level ExCA compliance.

FAQ

What is the primary function of the PCI1520IPDVEP in a system architecture?

The PCI1520IPDVEP serves as a dual-slot PCI-to-CardBus bridge controller, translating between the 32-bit, 33-MHz PCI bus and two independent PC Card sockets compliant with PC Card Standard Rev. 7.1. It handles protocol conversion, memory/I/O window mapping, power sequencing, and hot-swap event management - enabling legacy PCI systems to support modern CardBus peripherals. Its role is foundational in docking stations, carrier boards, and embedded expansion modules.

Does the PCI1520IPDVEP require an external 2.5-V power supply?

No. The PCI1520IPDVEP integrates a low-dropout voltage regulator (LDO-VR) that generates its internal 2.5-V core supply from the 3.3-V I/O rail. This eliminates the need for an external 2.5-V regulator, simplifying power design and reducing bill-of-materials count. The device operates with only a single 3.3-V supply applied to VCCIO pins, while maintaining full 5-V tolerance on PCI signaling lines.

Is the PCI1520IPDVEP pin-compatible with the Intel 82365SL-DF?

Yes - the PCI1520IPDVEP is register-compatible and pin-compatible with the Intel 82365SL-DF in the PDV (208-pin LQFP) package. Signal names, pin locations, and electrical characteristics align per datasheet Table 2−1 and Section 1.2. This allows direct hardware replacement in existing 82365SL-DF designs, retaining full driver and BIOS compatibility while adding integrated LDO-VR and enhanced throughput.

What hot-swap capabilities does the PCI1520IPDVEP support for PC Cards?

The PCI1520IPDVEP supports full hot insertion and removal of both 16-bit PC Cards and 32-bit CardBus cards through internal signal buffering, dedicated card-detect logic (CD1/CD2), and ExCA-compliant event handling. It monitors voltage sense lines, asserts proper power sequencing via CBx_VCCEN/VPPEN outputs to external TPS222X switches, and generates socket-status interrupts - all without requiring external buffer ICs or custom hot-swap controllers.

How does the PCI1520IPDVEP handle power management in Suspend Mode?

In Suspend Mode, the PCI1520IPDVEP disables internal clocks, gates non-essential logic, and maintains only essential state in retention registers while asserting SUSPEND# to downstream cards. It complies with PCI Bus Power Management Interface Spec Rev. 1.1 and ACPI 1.1, supporting wake events via ring-indicate (RI_OUT), card insertion, or PCI PME#. The integrated LDO-VR remains active in low-quiescent mode to preserve core state during suspend/resume transitions.