Texas Instruments PCI7410GHK

Overview

PCI7410GHK from Texas Instruments is a four-function, 33-MHz PCI-to-CardBus bridge IC integrating PC Card socket control (Function 0), SD/MMC/Memory Stick interface (Function 1), IEEE 1394a-2000 OHCI PHY/Link-layer controller with two fully compliant cable ports (Function 2), and firmware loading interface (Function 3). It supports 100/200/400 Mbits/s FireWire data rates, 1.8-V core / 3.3-V I/O operation, and PCI power states D0–D3 for notebook and mobile docking applications.

For engineers reviewing the PCI7410GHK datasheet, PCI7410GHK pinout, PCI7410GHK application, or PCI7410GHK equivalent, key selection considerations include its dual 1394a-2000 port architecture, ExCA register compatibility with Intel 82365SL–DF, integrated SD/MMC/Memory Stick socket controller, PCI burst transfer capability up to 132 MBps, and NRND status requiring lifecycle-aware sourcing.

Technical Context

The PCI7410GHK implements a four-function PCI device where Function 2 integrates full IEEE 1394a-2000 OHCI-compliant PHY and link-layer logic-including physical write posting buffers, deep FIFOs for latency tolerance, and resynchronization of received data to a 49.152-MHz local clock derived from a 24.576-MHz crystal. It supports S100/S200/S400 signaling, fly-by concatenation, arbitration acceleration, and port disable/suspend/resume.

Its architecture includes independent buffering per function, pipeline-based data path for sustained bursting, memory-mapped non-prefetchable OHCI registers, and ACPI 2.0–compliant general-purpose I/O terminals. The device uses advanced submicron CMOS, delivers 132-MBps burst throughput on the PCI bus, and provides separate TPBIAS biasing for each 1394 port.

Key Specifications

Pinout & Package

PCI7410GHK is housed in a 209-pin MICROSTAR BGA package (package drawing GHK), with ball pitch of 0.8 mm and body size 15 mm × 15 mm. Pinout is defined per TI SLLA247 datasheet and includes dedicated PCI interface signals (AD[31:0], C/BE[3:0]#, PAR, FRAME#, IRDY#, TRDY#, STOP#, DEVSEL#), CardBus control (CD1#, CD2#, VCC1, VCC2), 1394 port pairs (TPA+/−, TPB+/− per port), SD/MMC interface (DAT0–3, CMD, CLK), and multifunction I/O (GPIO0–7, SUSPEND#, LOCK#, CCLKRUN#).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar IEEE 1394 OHCI host controller applications.

Compared with TIB5001ZHK and PCI7421ZHK, the PCI7410GHK uniquely integrates PCI-to-CardBus bridging, dual 1394a-2000 OHCI functionality, and SD/MMC/Memory Stick host control in one die-making it irreplaceable in legacy PC Card-based mobile docking architectures despite its NRND status.

Availability

PCI7410GHK is available at Aetrix Electronics and suitable for mobile docking stations, FireWire audio interfaces, notebook expansion slots, and digital camcorder capture cards requiring stable component supply amid end-of-life transitions.

Supply support for PCI7410GHK 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 specializing in analog, embedded processing, and connectivity technologies, with leadership in interface, power management, and signal chain solutions.

The PCI7410GHK belongs to TI's UltraMedia™ PC Card controller product line, designed specifically to consolidate PCI-to-CardBus bridging, IEEE 1394 host control, and flash memory card interfacing for high-volume mobile computing platforms.

FAQ

What is the primary function of the PCI7410GHK in a PC Card system?

The PCI7410GHK serves as a four-function PCI-to-CardBus bridge IC. Its primary role is to integrate PC Card socket control (Function 0), SD/MMC/Memory Stick interface (Function 1), IEEE 1394a-2000 OHCI PHY/Link-layer controller (Function 2), and firmware loader (Function 3) into a single chip. This enables compact, low-power mobile docking solutions without requiring discrete controllers for each interface. The PCI7410GHK is essential for systems needing concurrent FireWire, flash card, and legacy PC Card support.

Is the PCI7410GHK pin-compatible with the Intel 82365SL–DF controller?

Yes, the PCI7410GHK implements ExCA-compatible registers mapped in memory or I/O space and is explicitly designed for register-level compatibility with the Intel 82365SL–DF. This allows existing PC Card socket service software to operate unchanged when migrating to the PCI7410GHK. However, the PCI7410GHK extends functionality with integrated 1394 and SD/MMC interfaces-so while register access is compatible, full feature utilization requires updated drivers and hardware design.

Does the PCI7410GHK support both 3.3-V and 5-V CardBus operation?

Yes, the PCI7410GHK supports both 3.3-V and 5-V CardBus signaling environments through universal PCI interface logic. It handles voltage switching automatically based on card detection signals (CD1#, CD2#) and provides separate VCC1/VCC2 power rails. This dual-voltage support ensures backward compatibility with legacy 5-V PC Cards and forward readiness for modern 3.3-V CardBus devices-all within a single socket implementation using the PCI7410GHK.

What clock source does the PCI7410GHK require for IEEE 1394 operation?

The PCI7410GHK requires a 24.576-MHz fundamental-mode crystal connected to its XIN/XOUT pins. An internal oscillator and PLL generate a 393.216-MHz reference for the PHY layer and a 49.152-MHz clock for the integrated OHCI link-layer controller. This single crystal eliminates the need for multiple clock sources and ensures precise timing alignment between transmit encoding and receive resynchronization-critical for stable S100/S200/S400 1394 operation. External clock input is also supported as an alternative.

Why is the PCI7410GHK marked as NRND, and what is its replacement?

The PCI7410GHK is marked NRND (Not Recommended for New Designs) because Texas Instruments has discontinued active development and marketing of this part. Its designated replacement is the PCI7421ZHK, which adds PCI Express support, IEEE 1394b compatibility, and updated power management-but uses a different register map and is not pin-compatible. For ongoing production of legacy systems, the PCI7410GHK remains available through authorized distributors with traceable, lifecycle-managed sourcing via Aetrix Electronics.