مدار مجتمع (آی سی) آی‌سی صوتی ویژه

Product Attributes

Introduction

The PCM2704/5/6/7 is a single-chip USB stereo audio DAC with USB-compliant full-speed protocol controller and S/PDIF. The USB-protocol controller works with no software code, but USB descriptors can be modified in some parts (for example, vendor ID/product ID) through the use of an external ROM (PCM2704/6), SPI (PCM2705/7), or on request. The PCM2704/5/6/7 employs SpAct™ architecture, a unique system that recovers the audio clock from USB packet data. On-chip analog PLLs with SpAct enable playback with low clock jitter.

Features

• On-Chip USB Interface:
  • No Need of Dedicated Device Driver
  • With Full-Speed Transceivers
  • Fully Compliant With USB 1.1 Specification
  • Certified by USB-IF
  • Partially Programmable Descriptors
  • Adaptive Isochronous Transfer for Playback
  • Bus-Powered or Self-Powered Operation
• Single Power Supply: Bus-Powered: 5 V, Typical (VBUS); Self-Powered: 3.3 V, Typical
• External ROM Interface (PCM2704/6)
• Serial Programming Interface (PCM2705/7)
• I2S Interface (Selectable on PCM2706/7)
• Package:
  • 28-Pin SSOP (PCM2704/5)
  • 32-Pin TQFP (PCM2706/7)
• Multiple Functions: Up to Eight Human Interface Device (HID) Interfaces (Depending on Model and Settings)
• Suspend Flag
• S/PDIF Out With SCMS

Applications

• USB Headphones
• USB Audio Speaker
• USB CRT/LCD Monitor
• USB Audio Interface Box
• USB-Featured Consumer Audio Product