Texas Instruments PCI1520IPDV

Overview

PCI1520IPDV from Texas Instruments is a dual-slot PCI-to-CardBus bridge controller in 208-pin LQFP (PDV) package, implementing full 32-bit PCI v2.2 and PC Card Standard rev. 7.1 compliance. It supports hot-plug 16-bit and CardBus cards at 3.3 V or 5 V, delivers >130 Mbps sustained throughput via pipelined burst transfers, and integrates an LDO-VR for 2.5-V core supply - enabling direct use in notebook docking stations and industrial PCMCIA expansion systems.

For engineers reviewing the PCI1520IPDV datasheet, PCI1520IPDV pinout, PCI1520IPDV application, or PCI1520IPDV equivalent, this page provides verified technical context on ExCA register mapping, PCI/ISA interrupt routing options, CardBus socket power sequencing, serial EEPROM configuration interface, and real-world timing behavior under 33-MHz PCI clock operation.

Technical Context

The PCI1520IPDV implements a dual-function PCI device with separate configuration spaces for two independent CardBus sockets (Function 0 and Function 1), each supporting full PCI-to-CardBus bridging with ExCA-compliant register sets mapped in both I/O and memory space. Its internal data path handles 8-, 16-, and 32-bit card accesses using native 32-bit PCI cycles.

It features integrated power management per PCI Bus Power Management Interface Spec rev. 1.1 and ACPI 1.1, including Suspend Mode, CLKRUN protocol support, and PME-capable registers. The device uses advanced quarter-micron CMOS to achieve ultralow power consumption while maintaining 33-MHz PCI timing compliance across industrial temperature range.

Key Specifications

Pinout & Package

PCI1520IPDV is housed in a 208-pin Low-Profile Quad Flat Package (PDV), measuring 28 mm × 28 mm with 0.5-mm pitch. All signals are internally buffered to support hot insertion/removal without external logic.

Key Features

Applications

Equivalent & Alternatives

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

Compared with Intel 82365SL-DF, PCI1520IPDV reduces BOM count via integrated LDO-VR and simplifies clock tree design with internal ring oscillator; compared with PCI1520IPGHK, it trades board area for assembly flexibility and serviceability in field-replaceable modules.

Availability

PCI1520IPDV is available at Aetrix Electronics and suitable for notebook docking stations, industrial PCMCIA expansion modules, and embedded medical data acquisition systems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for PCI1520IPDV 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 company headquartered in Dallas, Texas, specializing in analog, embedded processing, and connectivity technologies for industrial, automotive, and communications markets.

The PCI1520 product line was designed specifically to enable seamless PCI-to-PC Card bridging in mobile and embedded systems, addressing the need for hot-plug support, low-power operation, and ExCA register compatibility in resource-constrained platforms.

FAQ

What is the primary function of the PCI1520IPDV in a system architecture?

The PCI1520IPDV serves as a dual-slot PCI-to-CardBus bridge controller, translating between the 32-bit PCI Local Bus and two independent PC Card sockets compliant with the PC Card Standard rev. 7.1. It manages hot-plug detection, power switching, interrupt routing, and ExCA register access - enabling legacy and CardBus peripherals to operate transparently under PCI-based host systems. The PCI1520IPDV integrates critical functions like LDO regulation and clock generation to minimize external components.

Does the PCI1520IPDV require an external 2.5-V power supply?

No, the PCI1520IPDV does not require an external 2.5-V power supply. It incorporates an integrated low-dropout voltage regulator (LDO-VR) that generates the 2.5-V core voltage from the 3.3-V I/O supply. This eliminates the need for a discrete regulator and simplifies power delivery in space-constrained designs such as notebook docking stations and embedded modules where the PCI1520IPDV is commonly deployed.

Is the PCI1520IPDV pin-compatible with the Intel 82365SL-DF?

Yes, the PCI1520IPDV is pin-compatible with the Intel 82365SL-DF in the PDV (208-pin LQFP) package. Both devices share identical terminal assignments for PCI signals, CardBus interface lines, power control, and ExCA register access. However, the PCI1520IPDV adds integrated features - including the LDO-VR, internal ring oscillator, and enhanced power management registers - that extend functionality without altering the physical interface used by the PCI1520IPDV.

How does the PCI1520IPDV support hot insertion and removal of PC Cards?

The PCI1520IPDV supports hot insertion and removal through fully buffered card signals, integrated card-detect logic (CD1#/CD2#), voltage-sense inputs (BVD1/BVD2), and coordinated power-switch control via TPS222X interface. Its internal state machine sequences VCC ramp-up/down, asserts proper reset timing (GRST), and updates socket status registers - all without requiring external glue logic. This ensures safe electrical transitions and reliable enumeration in systems where the PCI1520IPDV manages dynamic peripheral attachment.

What interrupt configurations does the PCI1520IPDV support?

The PCI1520IPDV supports four interrupt configurations: parallel PCI, serialized PCI, parallel ISA, and serialized ISA. These options allow flexible integration with diverse host architectures - from modern ACPI-aware OSes using serialized IRQSER to legacy BIOS-based systems relying on ISA-style edge-triggered interrupts. The PCI1520IPDV also provides five general-purpose I/Os and dedicated interrupt mask/flag registers (described in Section 3.7) to enable custom sideband signaling alongside standard PCI1520IPDV interrupt handling.