pl-2303x Prolific Technology Inc., pl-2303x Datasheet - Page 10

• Manufacturer Part Number: pl-2303x
• Description: Pl-2303x Edition Chip Rev A Usb To Serial Bridge Controller
• Manufacturer: Prolific Technology Inc.

Revised Date:
July 4, 2006
ds_pl2303XA_v15F.doc
3.0 Introduction
PL-2303X provides a convenient solution for connecting an RS232-like full-duplex asynchronous
serial device to any Universal Serial Bus (USB) capable host. PL-2303X highly compatible drivers
could simulate the traditional COM port on most operating systems allowing the existing applications
based on COM port to easily migrate and be made USB ready.
By taking advantage of USB bulk transfer mode, large data buffers, and automatic flow control,
PL-2303X is capable of achieving higher throughput compared to traditional UART (Universal
Asynchronous Receiver Transmitter) ports. When real RS232 signaling is not required, baud rate
higher than 115200 bps could be used for even higher performance. The flexible baud rate generator of
PL-2303X could be programmed to generate any rate between 75 bps and 6Mbps.
PL-2303X is exclusively designed for mobile and embedded solutions in mind, providing a small
footprint that could easily fit in to any connectors and handheld devices. With very small power
consumption in either operating or suspend mode, PL-2303X is perfect for bus powered operation
with plenty of power left for the attached devices. Flexible signal level requirement on the RS232-like
serial port side also allows PL-2303X to connect directly to any 3.3V~1.8V range devices.
PL-2303XA Product Datasheet
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Document Version 1.5F