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CY3650 USB Development System User's Guide

1. Overview

The Cypress USB Development System is a powerful tool to assist development of user hardware and firmware
with emulated Cypress USB ICs. In the full development system environment (Figure 1), a PC-based interface
facilitates debugging through break-traps, single stepping, and display/modification of registers and data RAM. In
this mode, firmware can be implemented in on-board EPROM, or downloaded to program RAM. The RAM option
provides a quick and easy method for testing firmware revisions.
PC
Wall Bug
RS-232
J2
J1
Development
Board
Logic Analyzer
USB
Target System
Figure 1. Typical USB Development Environment
Stand-alone mode (Figure 2) allows portable system operation. In this case, user firmware is loaded in EPROM,
and only power need be applied to produce a fully operating emulated USB chip.
Wall Bug
J2
J1
Development
Board
Target System
Figure 2. Stand-alone Environment
Figure 3 shows a block diagram of the development board, illustrating the major system components and the user
interfaces. The board supports a family of Cypress USB ICs, with varying amounts of on-chip EPROM, RAM, I/O,
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