My Inquiry
My Account
Texas Instruments PCI4520ZHK
- Part No.:
- PCI4520ZHK
- Manufacturer:
- Texas Instruments
- Category:
- Specialized
- Package:
- 257-LFBGA
- Datasheet:
-
PCI4520ZHK.pdf
- Description:
- BUS CONTROLLER PBGA257
- Quantity:
- Payment:
- Shipping:
Inventory:599
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
PCI4520ZHK from Texas Instruments is a dual-socket PC Card controller integrated with IEEE 1394a-2000 OHCI two-port PHY/Link-Layer controller. It supports 33-MHz PCI bus, 100/200/400 Mbps FireWire™ data rates, 1.8-V core / 3.3-V I/O operation, ExCA register compatibility with Intel 82365SL–DF, and full PCI power management (D0–D3 states). It enables hot-pluggable CardBus/PC Card expansion with FireWire connectivity in mobile and desktop docking systems.
For engineers reviewing the PCI4520ZHK datasheet, PCI4520ZHK pinout, PCI4520ZHK application, or PCI4520ZHK equivalent, key selection considerations include its dual-function architecture (PC Card bridge + 1394 OHCI controller), BGA-257 microstar package, 24.576-MHz crystal reference requirement, S100/S200/S400 physical layer compliance, and register-level compatibility with legacy ExCA host software stacks.
Technical Context
The PCI4520ZHK integrates two independent functional blocks on a single die: Functions 0 and 1 implement fully compliant PC Card socket controllers supporting both 16-bit PC Card and 32-bit CardBus, while Function 2 implements a complete IEEE 1394a-2000 OHCI-compliant PHY/LLC with two differential cable ports, internal PLL, and 49.152-MHz LLC clock derivation from a 24.576-MHz crystal.
Its architecture enables concurrent PCI-to-CardBus bridging and PCI-to-1394 data transfer at up to 132 MBps burst throughput, with deep FIFOs, physical write posting buffers, and out-of-order pipelining for asynchronous transmit requests - all managed under ACPI-compliant power states D0–D3 and ultralow-power sleep mode for battery-powered applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| PCI Interface | 33-MHz, 32-bit, 5-V/3.3-V tolerant, compliant with PCI Local Bus Spec 2.2 and ACPI 2.0 |
| 1394 Data Rates | 100/200/400 Mbps (S100/S200/S400) with full IEEE 1394a-2000 support including fly-by concatenation and arbitration acceleration |
| Core/I/O Voltage | 1.8-V core logic with internal regulator; 3.3-V I/O cells - eliminates need for external core voltage rail |
| Crystal Reference | 24.576-MHz fundamental-mode crystal required for PHY timing; generates 49.152-MHz LLC clock and 393.216-MHz PLL reference |
| Power States | D0–D3 support per PCI Power Management Interface Spec; automatic port power-down during suspend and ultralow-power sleep mode |
| Socket Support | Dual independent sockets supporting 16-bit PC Card and 32-bit CardBus cards, 5-V or 3.3-V powered, hot-insertion/removal capable |
| Register Compatibility | ExCA-compatible memory/I/O-mapped registers; Intel 82365SL–DF software driver drop-in replacement |
Pinout & Package
PCI4520ZHK is housed in a 257-pin MicroStar BGA (ZHK package), 17 × 17 mm, 1.0-mm pitch, RoHS-compliant. The package supports fine-pitch routing and thermal dissipation suitable for high-density laptop docking and industrial expansion modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CLKIN | PCI Clock Input | Accepts 33-MHz PCI system clock; drives internal PCI interface and synchronizes configuration access |
| TPA[0:1], TPB[0:1] | Differential 1394 Cable Pairs | Two independent twisted-pair A (strobe) and B (data) interfaces - each port has dedicated TPBIAS bias control |
| PCI_AD[0:31] | PCI Address/Data Multiplexed Bus | 32-bit multiplexed address/data lines; supports burst transfers and posted writes for optimized bandwidth utilization |
| EXCA_CS0/CS1 | Card Socket Chip Select | Active-low enables for Socket 0 and Socket 1; decodes ExCA register space and card attribute/memory windows |
| PME# | PCI Power Management Event | Open-drain active-low signal indicating wake event from D3cold; compliant with 1394 OHCI PME requirements |
| TPBIAS0/TPBIAS1 | Cable Bias Control | Separate 1.8-V bias voltage outputs per port - enables termination calibration and line condition monitoring |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Dual-Function Architecture | Single-die consolidation of PC Card bridge (Functions 0/1) and 1394 OHCI controller (Function 2) reduces BOM count and PCB area vs. discrete solutions |
| Full IEEE 1394a-2000 PHY Implementation | On-die transceivers with connection debounce, short reset, multispeed concatenation, and port disable/suspend/resume - no external PHY required |
| ExCA Register Compatibility | Memory- and I/O-mapped register set identical to Intel 82365SL–DF - enables reuse of existing PC Card service software without modification |
| Advanced Power Management | Hardware-enforced D0–D3 state transitions, automatic inactive port shutdown, and ultralow-power sleep mode reduce system-level power by >40% in idle states |
| Hot-Insertion Support | Internal buffering of all card signals and serialized IRQ handling eliminate need for external hot-swap controllers or level shifters |
Applications
| Laptop Docking Stations | Digital Video Capture Systems |
|---|---|
|
Use Scenario: Adding CardBus and FireWire connectivity to thin-and-light notebooks via proprietary or standard docking connectors. IC Role / Device Role / Timing Role: PCI4520ZHK acts as the primary bridge between the host's PCI bus and dual CardBus slots while simultaneously serving as the 1394 OHCI controller for DV camcorder streaming. Use Value: Enables simultaneous high-bandwidth video ingest (via S400 1394) and peripheral expansion (e.g., Gigabit Ethernet CardBus) without CPU overhead or additional chipsets. |
Use Scenario: Capturing uncompressed DV streams from consumer/prosumer camcorders into editing workstations using IEEE 1394a-2000 timing and protocol compliance. IC Role / Device Role / Timing Role: PCI4520ZHK provides OHCI-compliant link-layer control and PHY signaling synchronized to 49.152-MHz system clock - ensuring precise isochronous packet timing and jitter-free frame delivery. Use Value: Guarantees full i.LINK™ and FireWire™ interoperability with legacy DV devices while supporting extended features like extended resume signaling for legacy DV component compatibility. |
| Industrial PC Expansion Modules | Legacy System Upgrades |
|
Use Scenario: Retrofitting older industrial PCs with hot-pluggable CardBus I/O modules (e.g., serial/fieldbus adapters) and real-time 1394 motion control interfaces. IC Role / Device Role / Timing Role: PCI4520ZHK serves as both a robust PC Card host controller and deterministic 1394 timing node - managing arbitration acceleration and fly-by concatenation for multi-node daisy chains. Use Value: Delivers sustained 132-MBps PCI burst throughput and deep FIFO buffering to absorb host latency spikes in deterministic automation environments. |
Use Scenario: Extending lifespan of PC99/PC2001-compliant desktops by adding modern FireWire and CardBus capability without BIOS or driver rewrites. IC Role / Device Role / Timing Role: PCI4520ZHK operates as a drop-in register-compatible replacement for Intel 82365SL–DF-based designs - preserving existing ExCA initialization and interrupt handling logic. Use Value: Eliminates need for software requalification; leverages same driver stack while adding IEEE 1394a-2000 features like connection debounce and port suspend/resume. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PC Card + IEEE 1394 controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TUSB2046B | USB 2.0 hub controller only - no PC Card bridge, no 1394 PHY/LLC, no ExCA registers | Targets USB peripheral expansion, not FireWire or CardBus; requires separate 1394 controller IC | Select only if replacing legacy FireWire functionality with USB 2.0 and removing CardBus support entirely |
| PCI4510GHK | Same silicon family but single-socket variant (one PC Card slot); identical 1394 PHY/LLC and register set | Reduces PCB footprint and power draw where only one CardBus slot is needed; retains full 1394 feature parity | Choose when system design uses only one expansion slot - simplifies layout and lowers cost without sacrificing FireWire performance |
Compared with PCI4520ZHK, TUSB2046B lacks all PC Card and 1394 functionality and cannot serve as a functional substitute, while PCI4510GHK offers identical 1394 capabilities and software compatibility but with reduced socket count - making it a direct architectural subset for space-constrained implementations.
Availability
PCI4520ZHK is available at Aetrix Electronics and suitable for laptop docking stations, digital video capture systems, industrial PC expansion modules, and legacy system upgrades requiring stable component supply and long-term obsolescence mitigation support.
Supply support for PCI4520ZHK 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, delivering analog, embedded processing, and connectivity solutions across industrial, automotive, and communications markets.
The PCI4520ZHK belongs to TI's legacy PC interface and FireWire controller product line, designed specifically to integrate PCI-to-CardBus bridging with IEEE 1394a-2000 OHCI functionality for high-volume mobile docking and digital media platforms.
FAQ
What is the primary function of the PCI4520ZHK?
The PCI4520ZHK is a dual-function integrated circuit that combines a dual-socket PC Card controller (supporting both 16-bit PC Card and 32-bit CardBus) with a fully compliant IEEE 1394a-2000 OHCI two-port PHY/Link-Layer controller. It enables simultaneous high-speed peripheral expansion and FireWire connectivity on a single PCI bus interface. The PCI4520ZHK delivers this functionality in a single BGA-257 package with ExCA register compatibility and full PCI power management support.
Does the PCI4520ZHK require an external crystal?
Yes, the PCI4520ZHK requires a 24.576-MHz fundamental-mode crystal connected to its XIN/XOUT pins to generate all internal timing references. This crystal feeds the internal PLL, which produces the 393.216-MHz reference and the 49.152-MHz clock supplied to the integrated LLC. An external clock source may be substituted, but the crystal is the recommended and validated configuration per TI's SLLA242 datasheet for PCI4520ZHK.
Is the PCI4520ZHK pin-compatible with the Intel 82365SL–DF controller?
The PCI4520ZHK is ExCA register-compatible with the Intel 82365SL–DF, meaning its memory- and I/O-mapped configuration and socket control registers match exactly - enabling reuse of existing PC Card service software. However, it is not physically pin-compatible due to differing package types (BGA-257 vs. PQFP-144) and integrated 1394 functionality absent in the Intel part. Software drivers migrate seamlessly; hardware layout does not.
What power management features does the PCI4520ZHK support?
The PCI4520ZHK supports full PCI-defined power states D0 through D3, including automatic device power-down during suspend, inactive port power gating, and ultralow-power sleep mode. It complies with the PCI Bus Power Management Interface Specification and Intel Mobile Power Guideline 2000. The PCI4520ZHK also provides PME# signaling and integrates with TI's TPS2226/TPS2228 power switches for coordinated CardBus slot power control - critical for battery-powered docking applications.
Can the PCI4520ZHK support both 3.3-V and 5-V CardBus cards?
Yes, the PCI4520ZHK supports both 3.3-V and 5-V CardBus cards in either socket via programmable VCC selection and level-shifting circuitry. Its dual-socket architecture allows mixed-voltage operation - for example, Socket 0 powering a 5-V modem card while Socket 1 powers a 3.3-V wireless LAN adapter. All card signals are internally buffered to ensure safe hot insertion and removal without external components, as confirmed in the PCI4520ZHK functional description and electrical specifications.
PCI4520ZHK Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 257-LFBGA
- Packaging:
- Bulk
- Product Status:
- Active
- Applications:
- Controller
- Interface:
- PCI
- Voltage - Supply:
- 3.3V, 5V
- Supplier Device Package:
- 257-BGA MICROSTAR (16x16)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
PCI4520ZHK FAQ
1.How can I place an order for PCI4520ZHK through Aetrix?
Please submit a Request for Quotation (RFQ) for PCI4520ZHK on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for PCI4520ZHK reliable?
The price and inventory of PCI4520ZHK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PCI4520ZHK is usually 5 days.
3.What payment methods are accepted for PCI4520ZHK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PCI4520ZHK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PCI4520ZHK?
PCI4520ZHK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PCI4520ZHK order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for PCI4520ZHK?
For technical support, including PCI4520ZHK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PCI4520ZHK requirements.
6.How does Aetrix verify that PCI4520ZHK is sourced from the original manufacturer or authorized distributors?
All PCI4520ZHK products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that PCI4520ZHK meets industry standards.
7.What is the process for return or replacement of PCI4520ZHK?
All PCI4520ZHK units undergo pre-shipment inspection (PSI). If there is an issue with PCI4520ZHK, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The PCI4520ZHK part is unused and in its original packaging.
Return procedure for PCI4520ZHK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PCI4520ZHK Tags
-
NVT4857UKAZ
NXP Semiconductors
-
TCA8418RTWR
Texas Instruments
-
PCA9546APWR
Texas Instruments
-
MD0100N8-G
Microchip Technology
-
PCA9548APW,118
NXP Semiconductors
-
PCA9540BDP,118
NXP Semiconductors
-
PCA9548APWR
Texas Instruments
-
PCA9546APW,118
NXP Semiconductors
-
PTN3360DBS,518
NXP Semiconductors
-
PCA9546ABS,118
NXP Semiconductors
-
PCA9518PWR
Texas Instruments
-
PCA9545APW,118
NXP Semiconductors
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
