CY7C68320C-56PVXC USB 2.0 to ATA/ATAPI Bridge | Infineon
MPN: CY7C68320C-56PVXC ✓ AktifCY7C68320C-56PVXC Genel Bakış
What is a USB-to-ATA bridge? A USB storage bridge sits in the hierarchy of USB interface controllers and mass-storage adapters, converting a host USB port into an ATA/ATAPI device-side bus. Without such a bridge, a USB port cannot talk directly to an IDE disk, so the controller must generate ATA command timing, data strobes, and drive the 40/80-wire parallel ATA cable while presenting a standard USB mass-storage device class to the host. The AT2LP architecture places a low-power microcontroller core inside the bridge, which allows protocol handling and board-level manufacturing test to be performed entirely through the USB interface without external equipment.
Key features include support for CompactFlash plus one ATA/ATAPI device, full-speed/high-speed USB 2.0 peripheral operation, a Hi-Z ATA interface that can be placed in a high-impedance state so the ATA bus can be shared with another controller such as an IEEE-1394 device, and board-level manufacturing test using the USB interface. Package options in this family include SSOP and LQFP, with the -56PVXC ordering code identifying the 56-pin SSOP, commercial-temperature configuration.
Typical applications include legacy IDE and CompactFlash storage adapters, industrial and in-flight entertainment data recorders, USB-to-IDE dongles, multi-format card readers, and legacy PC or embedded platforms that retain an ATA bus but need a modern USB 2.0 host connection. Because the ATA side is a parallel bus, board layout must keep the ATA traces short and properly terminated, and USB differential routing must follow controlled-impedance layout rules.
When designing with this device, confirm that the USB host supplies the bus voltage needed for the attached ATA drive, provide the required USB transceiver and passives from the reference schematic, and verify that the ATA cable length stays within the limits stated in the manufacturer datasheet.
This page consolidates distributor availability, drop-in alternatives, pin and package guidance, and practical design notes for engineers who need to source or replace this legacy-to-modern storage interface bridge.
Drop-in alternatifler için CY7C68320C-56PVXC — aynı paket, pin-başına uyumlu. PCB yeniden montajı gerektiren farklı paket bileşenleri dışlanmıştır.
CY7C68320A-56PVXC
✅ Yerleştirme ⚠️ Onaylanmamış Özellikler📋 Katalogda Olmayan Referans Alternatifi
CY7C68320C-56PVC
✅ Yerleştirme ⚠️ Onaylanmamış Özellikler📋 Katalogda Olmayan Referans Alternatifi
CY7C68320A-56PVC
✅ Yerleştirme ⚠️ Onaylanmamış Özellikler📋 Katalogda Olmayan Referans Alternatifi
CY7C68320C-56PVXC-ND
✅ Yerleştirme📋 Katalogda Olmayan Referans Alternatifi
CY7C68320C-56PVXC Özellikler
| Device Type | USB 2.0 to ATA/ATAPI bridge controller (EZ-USB AT2LP) |
| USB Interface | USB 2.0 peripheral, high-speed |
| ATA Interface | ATA/ATAPI, single device, supports CompactFlash |
| Internal Clock | 56 MHz |
| Paket | 56-SSOP (plastic shrink small-outline package) |
| Pin Sayısı | 56 pins |
| Montaj Türü | Surface Mount |
| Hi-Z ATA Bus | Yes, ATA interface can be placed in high impedance for bus sharing |
| Bus Sharing Support | ATA bus sharing with another controller such as IEEE-1394 |
| Board-Level Manufacturing Test | Supported via the USB interface |
| Supported Devices | One ATA/ATAPI device and CompactFlash |
| Temperature Grade | Commercial |
| RoHS Durumu | Compliant |
| Supply Type | Tube (per supplier listing) |
CY7C68320C-56PVXC 56-ssop (plastic shrink small-outline package) Pin Yapısı Kılavuzu
CY7C68320C-56PVXC (56-ssop (plastic shrink small-outline package) paket) için pin yapısı. Pin numaralandırma, işlevleri ve bağlantı şemaları üretici veri kitapçığında tanımlanmıştır. Doğru ayak ve soldurma kılavuzları için onu referans alın.
Ayrıntılı pin çıkış verisi mevcut değil: CY7C68320C-56PVXC.
Aşağıdaki veri sayfası tam pin konfigürasyonu için.
Tipik Uygulamalar
CY7C68320C-56PVXC için uygundur 6 uygulamas: USB-to-IDE Legacy Storage Adapter, CompactFlash and IDE Multi-Format Card Reader, Industrial Data Logger with IDE Archive Store, Legacy IDE In-Flight Entertainment Recorder, USB-Based Board Manufacturing Test Fixture, Shared ATA Bus Multi-Standard Storage Appliance.
USB-to-IDE Legacy Storage Adapter
The CY7C68320C-56PVXC converts a USB 2.0 host port into an ATA/ATAPI target so legacy IDE disks can be used with modern computers. Its on-chip AT2LP controller generates ATA command timing and data strobes, so the host enumerates the drive as a standard USB mass-storage device with no proprietary driver. The 56-SSOP footprint keeps the bridge small enough for a dongle form factor, while the Hi-Z ATA interface lets the same connector be shared with another controller when needed. One ATA/ATAPI device plus CompactFlash is supported per the manufacturer feature list, matching single-disk adapter designs.
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CompactFlash and IDE Multi-Format Card Reader
Because the AT2LP bridge supports CompactFlash together with one ATA/ATAPI device, the CY7C68320C-56PVXC suits multi-format readers that must accept both CompactFlash cards and legacy hard disks. A single USB 2.0 connection then carries both media types, reducing connector count and enclosure complexity. The bridge handles ATA signalling and device detection internally, while the host sees standard USB mass-storage logical units. Board-level manufacturing test through the USB interface also lets production lines verify card-reader operation without a separate fixture.
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Industrial Data Logger with IDE Archive Store
Industrial loggers often need bulk archive storage on an IDE drive while also exposing a modern USB interface for data extraction. The CY7C68320C-56PVXC provides that ATA/ATAPI target interface, letting an embedded host write continuously to a legacy disk while a service laptop reads the same drive over USB 2.0. The 56 MHz controller core and single-device ATA support suit the deterministic, single-drive workload typical of machine vision and telemetry recorders. Its 56-SSOP package also leaves board area for the logger's processor and power stages.
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Legacy IDE In-Flight Entertainment Recorder
In-flight entertainment and cabin systems on older aircraft fleets retained ATA-based media drives, and the CY7C68320C-56PVXC allows those drives to be serviced or cloned through a USB 2.0 maintenance port. The Hi-Z ATA interface is particularly valuable in multi-standard cabin units, because the ATA bus can be driven by either the USB bridge or another embedded controller rather than being duplicated. The single ATA/ATAPI device plus CompactFlash support matches recorder architectures that use one media disk with a CompactFlash configuration port.
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USB-Based Board Manufacturing Test Fixture
The manufacturer lists board-level manufacturing test using the USB interface as a feature of the EZ-USB AT2LP bridge. In production, a USB-connected tester can exercise the bridge and the attached ATA port of an assembled board, verifying drive detection and basic command response without a dedicated ATA test fixture. This shortens test cycle time on lines building USB storage adapters in volume. The same part then serves as the shipping product, so no separate test-only component is needed on the assembly.
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Shared ATA Bus Multi-Standard Storage Appliance
Appliances that must support both USB and IEEE-1394 storage clients can share a single ATA bus by placing the bridge ATA output in a high-impedance state when it is not the active master. The CY7C68320C-56PVXC implements this Hi-Z capability explicitly for sharing with another controller such as an IEEE-1394 device, which avoids duplicating connectors and cabling inside the enclosure. The trade-off is that arbitration logic in the host controller must be verified carefully, since both masters must never drive the ATA lines simultaneously.
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Önerilen Ürünler Özeti
Mühendislik referans verileri: CY7C68320C-56PVXC — karşılaştırma, tasarım rehberi ve uyumluluk bilgileri.
Seçim Kılavuzu
Alternatiflerle Karşılaştırma
| Parametre | Bu Ürün | CY7C68320A-56PVXC | CY7C68320C-56PVC | CY7C68320A-56PVC | CY7C68320C-56PVXC-ND |
|---|---|---|---|---|---|
| Package | 56-SSOP | 56-SSOP - same | 56-SSOP - same | 56-SSOP - same | 56-SSOP - same |
| Brand | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies |
| Device Type | EZ-USB AT2LP USB 2.0 to ATA/ATAPI bridge | EZ-USB AT2LP USB 2.0 to ATA/ATAPI bridge | EZ-USB AT2LP USB 2.0 to ATA/ATAPI bridge | EZ-USB AT2LP USB 2.0 to ATA/ATAPI bridge | EZ-USB AT2LP USB 2.0 to ATA/ATAPI bridge |
| USB Interface | USB 2.0 peripheral | USB 2.0 peripheral | USB 2.0 peripheral | USB 2.0 peripheral | USB 2.0 peripheral |
| ATA Device Support | One ATA/ATAPI device plus CompactFlash | One ATA/ATAPI device plus CompactFlash | One ATA/ATAPI device plus CompactFlash | One ATA/ATAPI device plus CompactFlash | One ATA/ATAPI device plus CompactFlash |
| Hi-Z ATA Interface | Yes | Yes | Yes | Yes | Yes |
| Internal Clock | 56 MHz | 56 MHz | 56 MHz | 56 MHz | 56 MHz |
| Manufacturing Test via USB | Supported | Supported | Supported | Supported | Supported |
| Silicon Revision | C revision | A revision | C revision | A revision | C revision |
| Ordering Code Difference | CY7C68320C-56PVXC | A revision with same package codes | Alternate configuration code | A revision with alternate configuration code | ND packaging code |
Ana Farklılayıcılar
- On-chip USB-based board-level manufacturing test (karşılaştırma:CY7C68320A-56PVXC)
- Hi-Z ATA interface for shared-bus appliances (karşılaştırma:CY7C68320C-56PVC)
- Combined CompactFlash and single ATA device support in one bridge (karşılaştırma:CY7C68320A-56PVC)
Tasarım Notları
The ATA side of the bridge is a source-synchronous parallel bus, so route ATA data lines as a short, tightly length-matched group and keep the ATA connector and the CY7C68320C-56PVXC close together. Follow the manufacturer reference schematic for the series damping and termination network on the ATA data and strobe lines, and keep the analog ground return of the ATA connector tied into the board ground plane with low inductance. Long or mismatched ATA traces will show up as intermittent CRC errors and dropped media during read/write bursts.
USB 2.0 differential pairs need controlled impedance, so route D+ and D- as a coupled pair with the impedance specified in the manufacturer reference design, over a continuous ground plane, with no plane splits or vias stubs beneath the pair. Place the USB ESD protection array and the transceiver close to the connector so that surge energy is clamped before it reaches the bridge pins. Decoupling capacitors for the bridge and the ATA drive should be placed at the pins with short ground returns.
The most common design mistake with this bridge is driving the ATA bus from two masters at once. If the Hi-Z function is used to share the ATA bus with an IEEE-1394 or similar controller, ensure the enable and arbitration logic guarantees only one device asserts the bus at a time, and that power sequencing does not enable the bridge while the other controller is already driving. A second common pitfall is exceeding the ATA cable length limits, which should be checked against the manufacturer system description before the first prototype is laid out.
The attached ATA/ATAPI drive, not the bridge alone, dominates the current draw of the assembly, so size the input supply and its bulk capacitance for drive spin-up and seek currents rather than for the controller. Provide the drive-select and power-enable sequencing expected by the ATA device and confirm that the USB host source can deliver the required inrush through the cable and connector. Estimated: a typical 3.5-inch ATA disk can draw several times its steady-state current at spin-up, so verify the connector and upstream regulator against the worst case rather than the nominal.
Uyumluluk Bilgisi
RoHS compliance is indicated by the manufacturer material declarations for the EZ-USB AT2LP family. REACH, halogen-free and conflict-minerals statements were not stated for this ordering code and should be confirmed on request.
