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Infineon Technologies CY7C68300B-56PVXC
- Part No.:
- CY7C68300B-56PVXC
- Manufacturer:
- Infineon Technologies
- Category:
- Controllers
- Package:
- 56-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
CY7C68300B-56PVXC.pdf
- Description:
- IC USB 2.0 BRIDGE BULK 56SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,028
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Product details
Overview
CY7C68300B-56PVXC from Cypress Semiconductor is a fixed-function USB 2.0 to ATA/ATAPI-6 bridge IC enabling direct connection of IDE storage devices (e.g., CompactFlash, HDDs, DVD-ROM) to USB hosts without firmware development. It supports high-speed (480 Mbps) and full-speed (12 Mbps) USB operation, 48-bit LBA addressing, ATA PIO modes 0/3/4, UDMA modes 2–4, and ATA security features. Designed for bus- and self-powered CF readers and portable USB hard drives.
For engineers reviewing the CY7C68300B-56PVXC datasheet, CY7C68300B-56PVXC pinout, CY7C68300B-56PVXC application, or CY7C68300B-56PVXC equivalent, key selection criteria include ATA/ATAPI-6 compliance, 56-pin SSOP package compatibility with CY7C68300A, USB Mass Storage Class Bulk-Only Transport certification (TID# 40460273), and support for dual-device configurations (master/slave or CF + ATA).
Technical Context
The CY7C68300B implements a dedicated hardware bridge with integrated 4-Kbyte FIFO buffer to decouple USB and ATA timing domains, minimizing seek-time penalties during data transfers. Its Smart USB FS/HS Engine handles protocol translation while the ATA Interface Logic manages command decoding, status reporting, and signal timing per ATA/ATAPI-6 specification.
It operates in two power modes-bus-powered (via VBUS) or self-powered-with configurable VBUS_ATA_ENABLE and PWR500# signaling to control ATA interface activation. Backward compatibility mode enables pin-for-pin replacement of CY7C68300A using EEPROM signature detection (0x4D4D) at startup.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| USB Speed | High-speed (480 Mbps) and full-speed (12 Mbps); enables backward-compatible host connectivity without driver changes. |
| ATA Interface | Compliant with ATA/ATAPI-6 spec; supports PIO 0/3/4, multiword DMA 2, UDMA 2/3/4 - ensures interoperability with legacy and modern IDE storage. |
| Addressing | 48-bit LBA addressing; allows access to hard drives >137 GB without CHS translation limitations. |
| FIFO Buffer | 4-Kbyte on-chip FIFO; absorbs burst latency mismatches between USB and ATA transfer rates, improving sustained throughput. |
| Power Modes | Bus-powered and self-powered operation; selectable via VBUSPWRD input and supported by PWR500# and DRVPWRVLD signals. |
| EEPROM Interface | I²C-based external serial EEPROM (SCL/SDA); stores USB descriptors, device configuration, and compatibility mode settings. |
| Certifications | USB 2.0 certified (TID# 40460273), USB Mass Storage Class and BOT compliant - guarantees plug-and-play with native OS drivers. |
Pinout & Package
Package: 56-pin SSOP (lead-free, RoHS-compliant). Dimensions: 12.0 mm × 6.2 mm × 1.75 mm (JEDEC MS-013AC). Thermal pad not present; standard SSOP thermal performance applies.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| DD0–DD15 | ATA Data Bus I/O | 16-bit bidirectional parallel data path to ATA/ATAPI device; Hi-Z when ATA_EN inactive or in compatibility mode. |
| DIOR#, DIOW#, DMACK# | ATA Control Outputs | Active-low strobes for read/write acknowledge and DMA handshake; CMOS-driven, compatible with standard ATA timing. |
| IORDY, DMARQ | ATA Control Inputs | Flow-control signals from ATA device: IORDY extends cycle duration; DMARQ requests DMA service. |
| VCC, GND (×9) | Power & Ground | Dedicated analog/digital VCC (3.3 V) and AGND pins ensure noise isolation for USB transceiver and ATA interface logic. |
| DPLUS, DMINUS | USB Differential Pair | Full-/high-speed USB 2.0 physical layer interface; requires 90-Ω differential impedance routing. |
| XTALIN, XTALOUT | 24 MHz Crystal Interface | Drives internal PLL for USB clock generation; supports fundamental-mode 24 MHz crystal with load capacitance ≤12 pF. |
| SCL, SDA | I²C Serial Interface | Configures device identity, USB descriptors, and boot behavior via external EEPROM; operates at ≤400 kHz. |
| VBUS_ATA_ENABLE | ATA Interface Enable | Asserted to activate ATA bus drivers; enables Hi-Z sharing with other controllers (e.g., IEEE-1394 bridge) when deasserted. |
Key Features
| Feature | Design Value |
|---|---|
| No-firmware bridge architecture | Eliminates MCU, flash, and firmware validation overhead; reduces BOM cost and time-to-market for mass storage peripherals. |
| Backward compatibility mode | Detects EEPROM signature 0x4D4D to auto-configure CY7C68300A pinout, enabling drop-in replacement in legacy AT2 designs. |
| ATA bus sharing capability | ATA_EN pin places DDx/DIOr#/etc. in high-impedance state, allowing coexistence with secondary controllers on shared IDE bus. |
| Board-level test support | USB interface provides full register and memory access for manufacturing test - no JTAG or debug port required. |
| ATA security & DRM support | Enables ATA password protection and ATAPI VPD page 83 (serial number) retrieval for Windows Media DRM compliance. |
Applications
| CompactFlash Reader | USB External Hard Drive |
|---|---|
Use Scenario: Portable card reader connecting CF cards to laptops or embedded hosts via USB cable. IC Role / Device Role / Timing Role: Fixed-function bridge translating USB MSC BOT commands into ATA PIO reads/writes; manages CF-specific timing (e.g., reset, status polling). Use Value: Enables USB enumeration without custom drivers; supports hot-plug CF insertion and removal via standardized USB mass storage class behavior. |
Use Scenario: Enclosed 2.5-inch SATA-to-USB adapter housing a laptop HDD with external power or bus-powered operation. IC Role / Device Role / Timing Role: Acts as primary ATA controller for legacy IDE HDDs; handles UDMA mode negotiation and 48-bit LBA translation for >137 GB drives. Use Value: Delivers sustained 25+ MB/s throughput over USB 2.0 using UDMA-4 and 4-Kbyte FIFO buffering - sufficient for HD video streaming. |
| DVD-ROM Adapter | Industrial Media Player |
Use Scenario: USB-connected DVD-ROM drive used in kiosks or point-of-sale terminals where optical media loading must be transparent to host OS. IC Role / Device Role / Timing Role: Translates SCSI/USB MSC commands into ATAPI packet commands; manages ATAPI device reset, inquiry, and mode sense sequences. Use Value: Supports ATAPI serial number VPD page retrieval required for digital rights management (DRM) playback authorization in Windows environments. |
Use Scenario: Ruggedized media player in transportation or medical equipment using CF or microdrive for local content storage. IC Role / Device Role / Timing Role: Provides deterministic ATA initialization without host software intervention; supports ATA security mode set for encrypted content protection. Use Value: Ensures reliable boot from CF via mode page 5 support and eliminates firmware update dependencies across product lifecycle. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB-to-ATA bridge applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C68301B-56PVXC | Battery-optimized variant with lower standby current; identical pinout and feature set except reduced power consumption in suspend mode. | Preferred for portable, battery-powered CF readers where runtime >8 hours is required. | Select CY7C68301B if system power budget mandates <100 µA suspend current; otherwise CY7C68300B offers same functionality at lower cost. |
| CY7C68320-56PVXC | Adds GPIO0–GPIO2 and HID interface capability; uses same 56-pin QFN package but differs in pin mapping (e.g., GPIO replaces ATAPUEN/PWR500#). | Required when button-triggered backup, LED status, or HID-class enumeration (e.g., for keyboard-like wake-up) is needed. | Choose CY7C68320 only if GPIO/HID functionality is essential; it is not pin-compatible with CY7C68300B in SSOP layout. |
Compared with CY7C68301B, the CY7C68300B trades marginal power savings for broader availability and lower unit cost in bus-powered designs; versus CY7C68320, it lacks GPIOs but maintains strict SSOP pin compatibility with legacy AT2 layouts - critical for drop-in upgrades.
Availability
CY7C68300B-56PVXC is available at Aetrix Electronics and suitable for CompactFlash readers, USB external hard drives, DVD-ROM adapters, and industrial media players requiring stable component supply and long-term obsolescence management.
Supply support for CY7C68300B-56PVXC 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
Cypress Semiconductor (now part of Infineon Technologies) is a fabless semiconductor company specializing in USB, memory, and programmable SoC solutions for embedded systems and consumer electronics.
The EZ-USB AT2LP product line was engineered specifically to replace legacy USB-to-IDE bridge chips like ISD-300A1 with lower power, higher integration, and zero-firmware operation - targeting cost-sensitive, high-volume mass storage peripherals.
FAQ
Is CY7C68300B-56PVXC pin-compatible with CY7C68300A?
Yes, CY7C68300B-56PVXC supports backward compatibility mode: upon detecting EEPROM signature 0x4D4D at startup, it configures its pinout to match CY7C68300A exactly. This enables drop-in replacement in existing AT2-based PCBs without layout changes.
Does CY7C68300B-56PVXC require external firmware or microcontroller?
No. The CY7C68300B is a fixed-function ASIC with hardwired USB-to-ATA translation logic. All protocol handling - including BOT command parsing, ATA command dispatch, and status reporting - occurs in hardware without firmware execution or external MCU involvement.
What ATA/ATAPI devices are supported?
The device supports all ATA/ATAPI-6 compliant storage: CompactFlash Type I/II, 2.5"/3.5" IDE HDDs, CD-ROM/RW, DVD-ROM/RAM, DVD±R/W, tape drives, and microdrives. It handles master/slave configurations, CF-only mode, and mixed CF + ATA setups.
How is USB enumeration handled?
USB descriptors (VID/PID, strings, configuration) are stored in an external I²C EEPROM connected to SCL/SDA pins. The device reads this EEPROM at power-up and presents itself as a standard USB Mass Storage Class device - fully compatible with Windows, macOS, and Linux native drivers.
CY7C68300B-56PVXC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 56-BSSOP (0.295", 7.50mm Width)
- Programmable:
- Not Verified
- Protocol:
- USB
- Function:
- Bridge, USB to ATA
- Interface:
- ATA
- Standards:
- USB 2.0
- Voltage - Supply:
- 3.15V ~ 3.45V
- Current - Supply:
- 50mA
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 56-SSOP
- Grade:
- -
- Qualification:
- -
CY7C68300B-56PVXC FAQ
1.How can I place an order for CY7C68300B-56PVXC through Aetrix?
Please submit a Request for Quotation (RFQ) for CY7C68300B-56PVXC 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 CY7C68300B-56PVXC reliable?
The price and inventory of CY7C68300B-56PVXC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY7C68300B-56PVXC is usually 5 days.
3.What payment methods are accepted for CY7C68300B-56PVXC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY7C68300B-56PVXC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY7C68300B-56PVXC?
CY7C68300B-56PVXC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY7C68300B-56PVXC 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 CY7C68300B-56PVXC?
For technical support, including CY7C68300B-56PVXC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY7C68300B-56PVXC requirements.
6.How does Aetrix verify that CY7C68300B-56PVXC is sourced from the original manufacturer or authorized distributors?
All CY7C68300B-56PVXC 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 CY7C68300B-56PVXC meets industry standards.
7.What is the process for return or replacement of CY7C68300B-56PVXC?
All CY7C68300B-56PVXC units undergo pre-shipment inspection (PSI). If there is an issue with CY7C68300B-56PVXC, 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 CY7C68300B-56PVXC part is unused and in its original packaging.
Return procedure for CY7C68300B-56PVXC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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