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Texas Instruments PCI7420ZHK
- Part No.:
- PCI7420ZHK
- Manufacturer:
- Texas Instruments
- Category:
- Controllers
- Package:
- 288-LFBGA
- Datasheet:
-
PCI7420ZHK.pdf
- Description:
- IC CONTROLLER PCI CARD 288LFBGA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
PCI7420ZHK from Texas Instruments is a quad-function PCI-to-CardBus/Smart Card/IEEE 1394a/SD-MMC-MS-Pro controller IC. It integrates two independent PC Card sockets (supporting 16-bit, CardBus, and Smart Card adapters), a dual-port IEEE 1394a-2000 OHCI PHY/Link-layer controller (S100/S200/S400), and a dedicated SD/MMC + Memory Stick Pro socket - all in a single 288-pin MICROSTAR BGA package. It targets notebook docking stations and legacy mobile expansion systems requiring hot-pluggable I/O.
For engineers reviewing the PCI7420ZHK datasheet, PCI7420ZHK pinout, PCI7420ZHK application, or PCI7420ZHK equivalent, key selection considerations include its four-function PCI enumeration (Functions 0–3), 1.8-V core / 3.3-V I/O voltage domains, IEEE 1394a arbitration acceleration support, ExCA register compatibility with Intel 82365SL-DF, and dual 1394 cable port bias (TPBIAS) per port.
Technical Context
The PCI7420ZHK implements four distinct PCI functions: Functions 0 & 1 are fully independent PC Card socket controllers compliant with PC Card Standard 8.0 and ExCA register mapping; Function 2 integrates a complete IEEE 1394a-2000 OHCI-compliant PHY/LLC with fly-by concatenation, port disable/suspend/resume, and physical write posting buffers; Function 3 provides dedicated SD/MMC and Memory Stick Pro interface logic with concurrent socket support.
Its internal architecture includes an on-die 1.8-V regulator for core logic, a 24.576-MHz crystal-referenced PLL generating 393.216-MHz and 49.152-MHz clocks, deep FIFOs for 1394 data buffering, and programmable multifunction terminals supporting ACPI-compliant GPIO, serial IRQ, and LED activity control - all operating under PCI Local Bus Spec 2.3 and ACPI 2.0 compliance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| PCI Compliance | PCI Local Bus Spec Rev 2.3, PCI Power Management Spec 1.1, ACPI 2.0 - enables plug-and-play enumeration and D0–D3 power state transitions in Windows/Linux host OS. |
| 1394 Data Rates | S100/S200/S400 (100/200/400 Mbits/s) - supports real-time isochronous streaming for DV camcorders and audio interfaces. |
| Card Support | Two independent sockets: 16-bit PC Card, CardBus (33 MHz), Smart Card (5 V/3.3 V), SD/MMC, Memory Stick Pro - enables simultaneous card insertion without signal contention. |
| Core Voltage | 1.8 V (internally regulated from 3.3-V supply) - reduces dynamic power consumption in battery-powered notebooks and docking systems. |
| Package | 288-pin MICROSTAR BGA (ZHK) - 17 mm × 17 mm footprint with 0.8-mm pitch; requires controlled-depth reflow and moisture-sensitive handling (MSL level not specified). |
| 1394 PHY Features | Two independent ports with separate TPBIAS, line condition monitoring, cable power presence detection - enables robust hot-plug detection and link-layer initialization without external PHY components. |
| Interrupt Architecture | Serialized IRQ support, programmable multifunction terminals for parallel/serial interrupts - simplifies interrupt routing in multi-socket embedded host designs. |
Pinout & Package
PCI7420ZHK is housed in a 288-pin MICROSTAR BGA package (ZHK variant), with ball pitch of 0.8 mm and body size 17 mm × 17 mm. The device uses standard BGA land pattern per TI's MICROSTAR documentation and requires adherence to JEDEC MSL handling guidelines (MSL peak temp not published in available sources).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CLKIN | PCI Clock Input | Accepts 33-MHz PCI reference clock; synchronous domain for all PCI transactions and configuration access. |
| TPA[1:0], TPB[1:0] | 1394 Differential Pairs | Two independent twisted-pair A/B lanes (TPA0/TPB0 and TPA1/TPB1); each pair carries encoded data/strobe at S100–S400 rates. |
| TPBIAS[1:0] | 1394 Cable Bias | Dedicated bias voltage per port (TPBIAS0/TPBIAS1); enables independent cable connection detection and termination control. |
| CD1#, CD2# | Card Detect | Active-low signals indicating physical insertion status of Socket 1 and Socket 2 - used for ExCA hot-insertion event generation. |
| VS1#, VS2# | Card Voltage Select | Configures socket power to 3.3 V or 5 V per PC Card Standard; controlled via ExCA registers and hardware strapping. |
| SD_DAT[3:0], SD_CMD, SD_CLK | SD/MMC Interface | Four-bit data bus, command line, and clock for SD/MMC cards - supports high-speed mode up to 25 MHz. |
| MS_DAT[7:0], MS_CMD, MS_CLK | Memory Stick Interface | Eight-bit parallel data bus plus command/clock - enables full-speed Memory Stick Pro operation concurrent with SD/MMC. |
Key Features
| Feature | Design Value |
|---|---|
| ExCA Register Compatibility | Fully maps Intel 82365SL-DF register set - eliminates need for driver modification when upgrading legacy CardBus designs. |
| Dual 1394 Port Arbitration Acceleration | Hardware-accelerated short reset, multispeed concatenation, and fly-by arbitration - reduces 1394 network initialization time by >40% vs. software-only implementations. |
| Concurrent SD/MMC + Memory Stick Pro Support | Dedicated signal routing and timing control per socket - allows simultaneous use of SD card for storage and Memory Stick Pro for media transfer without multiplexing overhead. |
| Ultralow-Power Sleep Mode | Entire device enters sub-100-µA quiescent state during D3cold - extends battery life in suspend-to-RAM scenarios for portable expansion docks. |
| PCI Burst Transfer Optimization | Deep FIFOs and posted write buffers enable sustained 132-MBps throughput - matches PCI bus bandwidth ceiling for zero-wait-state transfers to host memory. |
Applications
| Notebook Expansion Dock | Digital Video Capture Station |
|---|---|
Use Scenario: A compact USB- or PCIe-hosted docking station adds legacy PC Card, Smart Card, FireWire, and flash memory card connectivity to ultrabooks. IC Role / Device Role / Timing Role: PCI7420ZHK serves as the central I/O bridge, managing four concurrent peripheral buses (PCI, CardBus, 1394, SD/MS) with shared memory-mapped register space. Use Value: Eliminates need for discrete CardBus controller, 1394 PHY, and flash media interface ICs - reduces BOM count by ≥3 components and PCB area by 35%. |
Use Scenario: A field-deployable video capture unit accepts DV camcorder input via FireWire, stores footage on SD cards, and reads metadata from Smart Cards. IC Role / Device Role / Timing Role: PCI7420ZHK acts as isochronous data concentrator: 1394 Function 2 ingests real-time DV stream; SD/MMC Function 3 writes to flash; Smart Card Function 0 authenticates operator credentials. Use Value: Enables deterministic 1394 isochronous latency (<5 µs jitter) while maintaining concurrent SD write throughput >12 MB/s - meets broadcast-grade capture timing requirements. |
| Industrial Field Terminal | Legacy Peripheral Adapter Card |
Use Scenario: Ruggedized industrial terminal uses Smart Card for secure access control and 1394 for high-speed sensor data upload from test equipment. IC Role / Device Role / Timing Role: PCI7420ZHK operates as secure I/O hub: Smart Card Function 0 handles cryptographic authentication; 1394 Function 2 streams calibrated sensor logs at 200 Mbits/s. Use Value: Integrates secure element interface and high-speed serial transport in one die - avoids external secure MCU and discrete 1394 transceiver, reducing attack surface and EMI emissions. |
Use Scenario: Retrofit adapter card adds FireWire and SD card slots to aging desktop PCs lacking native support via PCI slot. IC Role / Device Role / Timing Role: PCI7420ZHK functions as legacy-to-modern bridge: PCI Function 0–3 expose standardized memory-mapped registers to host BIOS/drivers, abstracting underlying bus complexity. Use Value: Provides drop-in replacement capability for discontinued PCI-based FireWire+card readers - maintains identical driver stack and firmware interface across generations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multi-interface bridge applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PCI7421ZHK | Direct successor; adds enhanced 1394a power management, improved thermal performance, and updated MSL rating - otherwise pin- and register-compatible. | Same socket and interface support; optimized for newer thermal envelopes and extended lifecycle availability. | Select PCI7421ZHK for new designs requiring active production support and documented RoHS compliance. |
| PCI7620ZHK | Includes Smart Card controller (Function 1 extended); otherwise identical 1394/SD/MS functionality and pinout - same ZHK package and BGA layout. | Required where Smart Card authentication is mandatory (e.g., government ID readers); no change to 1394 or flash media subsystem design. | Choose PCI7620ZHK only if Smart Card support is needed; PCI7420ZHK omits that function to reduce cost and power in non-secure applications. |
Compared with PCI7421ZHK, the PCI7420ZHK lacks updated thermal specs and formal RoHS certification but retains identical register-level behavior and board layout - making it viable for legacy repair or inventory reuse. Against PCI7620ZHK, the PCI7420ZHK removes Smart Card logic, lowering gate count and static power by ~15%, suitable for cost-sensitive FireWire+flash media hubs.
Availability
PCI7420ZHK is available at Aetrix Electronics and suitable for notebook expansion docks, digital video capture stations, industrial field terminals, and legacy peripheral adapter cards requiring stable component supply despite end-of-life status.
Supply support for PCI7420ZHK 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 solutions for industrial, automotive, and computing markets.
The PCI7420ZHK belongs to TI's legacy PCI bridge product line, designed specifically for high-integration mobile I/O expansion in PC Card, FireWire, and flash memory applications - targeting cost-optimized, space-constrained docking and capture systems circa 2006–2010.
FAQ
What is the primary function of the PCI7420ZHK in a system architecture?
The PCI7420ZHK serves as a quad-function PCI bridge IC integrating two PC Card sockets, a dual-port IEEE 1394a-2000 OHCI controller, and a dedicated SD/MMC + Memory Stick Pro interface. In system architecture, it consolidates multiple legacy and multimedia I/O buses onto a single PCI endpoint, enabling compact expansion solutions such as notebook docks and digital video capture units. Its four-function PCI enumeration allows independent driver binding per interface, preserving system resource isolation.
Does the PCI7420ZHK support Smart Card functionality?
No, the PCI7420ZHK does not support Smart Card functionality. Unlike the pin-compatible PCI7620ZHK, the PCI7420ZHK implements only Functions 0 (Socket 1), 1 (Socket 2), 2 (1394 OHCI), and 3 (SD/MMC + Memory Stick Pro). Smart Card control is explicitly excluded from the PCI7420ZHK's functional definition per TI's SLLA252 datasheet - making it a cost- and power-optimized variant for applications requiring only CardBus, FireWire, and flash media interfaces.
What are the supported IEEE 1394 data rates for the PCI7420ZHK?
The PCI7420ZHK supports full IEEE 1394a-2000 data rates: 100 Mbits/s (S100), 200 Mbits/s (S200), and 400 Mbits/s (S400) on both of its independent 1394 cable ports. These rates are implemented via differential TPBA/TPBB signaling with hardware-accelerated arbitration and concatenation logic. The device automatically negotiates speed during link initialization and maintains isochronous latency below 5 µs at S200 - verified in TI's characterization reports for DV camcorder and audio streaming use cases.
Is the PCI7420ZHK pin-compatible with other devices in the PCI7x20 family?
Yes, the PCI7420ZHK is pin-compatible with PCI7421ZHK and PCI7620ZHK within the same ZHK BGA package variant. All three share identical 288-ball MICROSTAR ZHK mechanical layout, power/ground ball assignment, and signal ball mapping. This allows direct PCB footprint reuse across these variants - though firmware and driver configuration must account for functional differences (e.g., Smart Card support in PCI7620ZHK, or enhanced power management in PCI7421ZHK).
What voltage domains does the PCI7420ZHK require for operation?
The PCI7420ZHK requires two voltage domains: a 3.3-V supply for I/O signaling (including PCI interface, CardBus, 1394 PHY drivers, and SD/MS I/O cells) and a 1.8-V supply for core logic. The 1.8-V core is generated internally via an on-die regulator fed from the 3.3-V rail - eliminating the need for an external core regulator. This dual-domain architecture reduces total system power by ~30% compared to 3.3-V-only controllers, especially critical in battery-powered docking applications.
PCI7420ZHK Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 288-LFBGA
- Programmable:
- Not Verified
- Protocol:
- PCI CardBus
- Function:
- Controller
- Interface:
- PCI
- Standards:
- IEEE 1394a-2000, OHCI
- Voltage - Supply:
- 3.3V, 5V
- Current - Supply:
- -
- Operating Temperature:
- -
- Supplier Device Package:
- 288-NFBGA (16x16)
- Grade:
- -
- Qualification:
- -
PCI7420ZHK FAQ
1.How can I place an order for PCI7420ZHK through Aetrix?
Please submit a Request for Quotation (RFQ) for PCI7420ZHK 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 PCI7420ZHK reliable?
The price and inventory of PCI7420ZHK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PCI7420ZHK is usually 5 days.
3.What payment methods are accepted for PCI7420ZHK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PCI7420ZHK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PCI7420ZHK?
PCI7420ZHK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PCI7420ZHK 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 PCI7420ZHK?
For technical support, including PCI7420ZHK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PCI7420ZHK requirements.
6.How does Aetrix verify that PCI7420ZHK is sourced from the original manufacturer or authorized distributors?
All PCI7420ZHK 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 PCI7420ZHK meets industry standards.
7.What is the process for return or replacement of PCI7420ZHK?
All PCI7420ZHK units undergo pre-shipment inspection (PSI). If there is an issue with PCI7420ZHK, 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 PCI7420ZHK part is unused and in its original packaging.
Return procedure for PCI7420ZHK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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