Texas Instruments PCI1510ZGU

Overview

PCI1510ZGU from Texas Instruments is a single-slot CardBus controller IC that bridges PCI bus to 16-bit PC Cards and 32-bit CardBus cards, supporting hot insertion/removal, 3.3-V/5-V mixed-voltage operation, and pipelined burst transfers up to 130 Mbps. It integrates an LDO-VR for 2.5-V core supply, ExCA-compatible register mapping, and supports parallel/serialized PCI and ISA interrupts.

For engineers reviewing the PCI1510ZGU datasheet, PCI1510ZGU pinout, PCI1510ZGU application, or PCI1510ZGU equivalent, this device serves as a register-compatible replacement for Intel 82365SL-DF/SL in notebook/desktop PC Card socket designs requiring low-power PCI-to-CardBus bridging with full ExCA compliance and integrated power management.

Technical Context

The PCI1510ZGU implements a dual-mode PCI bridge with master/slave capability on its PCI interface and native CardBus socket control logic compliant with PC Card Standard Rev. 7.2. Its internal buffering enables hot-swap without external transceivers, and its pipeline architecture sustains >130 Mbps throughput in both directions.

It features ExCA-compliant register sets mapped in both memory and I/O space, supports ACPI 1.1 and PCI Power Management Interface Spec Rev. 1.1, and includes dedicated hardware for CardBus CCLKRUN, PCI CLKRUN, SUSPEND, and ring-indicate signaling - all managed via programmable registers including Power-Management Control/Status and Socket Event/Mask registers.

Key Specifications

Pinout & Package

The PCI1510ZGU is packaged in a 144-terminal MicroStar BGA (Ball Grid Array) with 0.8-mm pitch, designated GGU/ZGU per TI documentation. This package supports high-density PCB layout and thermal performance suitable for portable computing applications.

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, PCI1510ZGU eliminates the external 2.5-V regulator; compared with PCI1410, it adds CCLKRUN#, RI_OUT, and full 5-memory-window flexibility - making it optimal for AC-powered and telecom-enabled CardBus systems.

Availability

PCI1510ZGU is available at Aetrix Electronics and suitable for mobile notebook expansion, industrial PCMCIA interface, embedded communications gateway, and medical diagnostic equipment requiring stable component supply and long-term lifecycle support.

Supply support for PCI1510ZGU 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 solutions for industrial, automotive, and personal electronics markets.

The PCI1510ZGU belongs to TI's Connectivity Solutions portfolio, designed specifically for PCI-to-CardBus bridging in portable computing and embedded systems requiring hot-swap, low-power operation, and ExCA register compatibility.

FAQ

What is the primary function of the PCI1510ZGU?

The PCI1510ZGU is a single-slot PCI-to-CardBus bridge controller that enables host systems to interface with both 16-bit PC Cards and 32-bit CardBus cards. It handles protocol translation, voltage adaptation (3.3-V I/O, 2.5-V core), hot insertion/removal, and ExCA-compliant register access - all while sustaining >130 Mbps bidirectional burst throughput. The PCI1510ZGU integrates key functions like LDO-VR and ring-indicate signaling to reduce system-level component count.

Does the PCI1510ZGU require an external 2.5-V power supply?

No, the PCI1510ZGU includes an integrated low-dropout voltage regulator (LDO-VR) that generates its 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 cost. The PCI1510ZGU datasheet confirms this capability in Section 3.8.1 and Table 3−10.

Is the PCI1510ZGU pin-compatible with the Intel 82365SL-DF?

Yes - the PCI1510ZGU is register-compatible and pin-compatible with the Intel 82365SL-DF in the GGU/ZGU BGA package. Both devices share identical terminal assignments, ExCA register maps, and interrupt signaling behavior. However, the PCI1510ZGU adds integrated LDO-VR and enhanced power management features not present in the 82365SL-DF.

What types of interrupts does the PCI1510ZGU support?

The PCI1510ZGU supports four interrupt configurations: parallel PCI, serialized PCI, parallel ISA, and serialized ISA. These are selected and masked via dedicated registers (e.g., Interrupt Mask/Flag Registers in Section 3.7.2). The PCI1510ZGU also provides general-purpose inputs/outputs for custom interrupt routing and supports SMI and PME wake events through its Power-Management Control/Status Register.

How does the PCI1510ZGU handle hot insertion and removal of PC Cards?

The PCI1510ZGU internally buffers all card signals - including VCC, ground, and data lines - eliminating the need for external hot-swap protection circuitry. Its GRST signal synchronizes reset during insertion, and ExCA registers (e.g., Card Status-Change Register) detect card presence and voltage levels. The PCI1510ZGU also drives LED0/LED1 outputs to indicate socket activity, enabling robust user feedback during hot-swap events.