UTMI全称为 USB2.0 Transceiver Macrocell Interface，此协议是针对USB2.0的信号特点进行定义的，分为8位或16位数据接口。目的是为了减少开发商的工作量，缩短产品的设计周期，降低风险。此接口模块主要是处理物理底层的USB协议及信号，可与SIE整合设计成一专用ASIC芯片，也可独立作为PHY的收发器芯片，下以8位接口为例介绍PHY的工作原理及设计特点。 -UTMI called USB2.0 Transceiver Macrocell Interfac

usb的芯片ip core. 用HDL描述，适合asic/fpga人员参考或使用。USB ip core for ASIC/FPGA designers.-usb chips ip core. with HDL descr iption suitable for asic/fpga staff reference or use. USB ip core for ASIC/FPGA designers.

High volume USB 2.0 devices will be designed using ASIC technology with embedded USB 2.0 support. For full-speed USB devices the operating frequency was low enough to allow data recovery to be handled in a vendors VHDL code, with the ASIC vendor