Infineon Technologies CY7C68000-56PVXC

Overview

CY7C68000-56PVXC from Cypress Semiconductor is a USB 2.0 UTMI-compliant transceiver IC implementing high-speed (480 Mbps) and full-speed (12 Mbps) physical layer signaling with integrated 1.5 kΩ DPLUS pull-up, on-chip 24 MHz crystal oscillator interface, and selectable 8-bit/16-bit parallel bus (60 MHz / 30 MHz). It serves as the USB PHY interface between digital ASICs and the USB cable in embedded host/peripheral designs.

For engineers reviewing the CY7C68000-56PVXC datasheet, CY7C68000-56PVXC pinout, CY7C68000-56PVXC application, or CY7C68000-56PVXC equivalent, this page delivers verified package mapping (56-pin SSOP), UTMI v1.05 compliance, internal termination architecture, synchronous line-state monitoring, and operational mode control via OpMode[1:0] - all critical for USB 2.0 PHY integration and signal integrity validation.

Technical Context

The CY7C68000 implements dual-mode USB 2.0 transceivers with independent FS/HS selection logic: XcvrSelect controls transceiver path (0 = HS, 1 = FS), while TermSelect enables HS termination (0 = SE0 assertion) or FS pull-up (1 = 1.5 kΩ on DPLUS). Its on-die PLL multiplies a 24 MHz crystal input to generate precise 30 MHz (16-bit mode) or 60 MHz (8-bit mode) UTMI clock outputs synchronized to CLK.

It performs real-time NRZI encoding/decoding and bit stuffing/unstuffing, includes elastic buffering to absorb data rate variation, and provides combinatorial-to-synchronous LineState[1:0] outputs reflecting DMINUS/DPLUS states aligned to CLK edges. All USB line terminations - including 1.5 kΩ pull-up and differential impedance matching - are factory-trimmed and fully internal.

Key Specifications

Pinout & Package

Package: 56-pin SSOP (Pb-free, RoHS-compliant), body size 12.0 × 11.0 mm, pitch 0.635 mm. Thermal pad not present; standard SSOP footprint with exposed pad omitted.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar USB 2.0 PHY applications.

Compared with SMSC USB3300 and Microchip USB2502, the CY7C68000-56PVXC uniquely delivers UTMI+ v1.05 compliance with fully integrated terminations and crystal oscillator support - making it optimal for ASIC/FPGA designs requiring minimal external components and strict USB 2.0 electrical conformance.

Availability

CY7C68000-56PVXC is available at Aetrix Electronics and suitable for DSL modems, memory card readers, legacy conversion devices, and MP3 players requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for CY7C68000-56PVXC 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 programmable system-on-chip (PSoC), USB connectivity, and mixed-signal solutions for embedded systems.

The CY7C68000 belongs to Cypress's EZ-USB TX2™ family of USB 2.0 transceivers, designed specifically to decouple high-speed analog USB PHY functions from digital logic, enabling faster ASIC development with guaranteed USB 2.0 compliance.

FAQ

What is the function of the DataBus16_8 pin?

DataBus16_8 is a static configuration input sampled at end-of-reset that selects the parallel interface width: logic HIGH enables 16-bit mode (CLK = 30 MHz), logic LOW enables 8-bit mode (CLK = 60 MHz). In 8-bit unidirectional mode, Uni_Bidi further defines D0–D7 as Rx-only or Tx-only paths. This pin directly determines bus timing and data staging behavior.

Does CY7C68000-56PVXC require external USB termination resistors?

No. The CY7C68000-56PVXC integrates all required USB 2.0 terminations: a factory-trimmed 1.5 kΩ pull-up resistor on DPLUS and matched differential line terminations for DPLUS/DMINUS. External resistors are unnecessary, reducing component count and improving signal integrity consistency across production units.

How does the XcvrSelect and TermSelect pin combination control USB speed negotiation?

XcvrSelect selects the active transceiver (0 = HS, 1 = FS), while TermSelect configures termination (0 = HS SE0, 1 = FS pull-up). Together they enable hardware-level speed negotiation: asserting TermSelect = 0 + XcvrSelect = 0 places the device in HS idle; asserting TermSelect = 1 + XcvrSelect = 1 enables FS enumeration. This dual-signal scheme satisfies USB 2.0 chirp sequence requirements.

What is the purpose of the OpMode[1:0] pins?

OpMode[1:0] selects among four operational modes: 00 = normal USB data encoding/decoding; 01 = non-driving (soft disconnect, tri-states transmitters); 10 = disable bit stuffing and NRZI encoding (raw J/K output); 11 = reserved. These modes take immediate effect and override ongoing data transfers, supporting test, debug, and compliance verification.