TH6503

TH6503 USB Low-Speed Interface Description The TH6503 is an integrated circuit which enables the Universal Serial Bus (USB) to be connected to a microcontroller. The interface module contains all the components required to transmit data via the USB. The TH6503 has been developed for applications requiring a low speed interface to the USB. Any microcontroller can be used for control purposes. In addition to the default endpoint 0 for control transfer up to two endpoints can be supported by TH6503. The TH6503 has been developed in conformity with USB Specifications 1.1. Features ? Complient with USB Specification 1.1 ? Supports up to three programmable endpoints for interrupt and control transfer in each direction ? Integrated oscillator for clock generation, supports 6 MHz quartz, ceramic resonator ? Data transfer at USB low speed or external clock input ? Supports suspend mode ? Simple external circuitry ? Universal serial microcontroller interface ? Register programmable ? Programmable 1.5 MHz to 6 MHz out clock for microcontroller ? Provides power supply for the microcontroller (3.3 volts or 5 volts) TH6503 Sample Application TH6503 Serial Interface to USB Host / Hub USB Interface OCLK /ORST Microcontroller/ Customer Application Figure 1. Typical TH6503 Sample Application Figure 1 demonstrates a typical TH6503 application. The TH6503 translates the data and control signals received from the USB in a serial format which can be read by the microcontroller. The dat...