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Home > Products > Integrated Circuits ICs > PL-2303HX Prolific SSOP-28 Bridge Controller
PL-2303HX Prolific SSOP-28 Bridge Controller
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Product Details
| Brand Name | Prolific | Place of Origin | China | |
| Model Number | PL-2303HX | Type | Drive IC | |
| Package | ssop-28 | D/C | 10+ |
Product Description
Factory
PL-2303 USB Bridge Controller
Features
Full compliance with the USB Specification v1.1 and USB CDC v1.1
Support the RS232 Serial interface
Support automatic handshake mode
Support Remote wake-up and power management
256 bytes buffer each for upstream and downstream data flow
Support default ROM or external EEPROM for device configuration
On chip USB transceiver
On chip crystal oscillator running at 12M Hz
Supports Windows 98/SE, ME, 2000, XP, Windows CE3.0, CE .NET, Linux, and Mac OS
28 Pins SOIC package
Overview
The PL-2303 operates as a bridge between one USB port and one standard RS232 Serial port. The two
large on-chip buffers accommodate data flow from two different buses. The USB bulk-type data is adopted
for maximum data transfer. Automatic handshake is supported at the Serial port. With these, a much higher
baud rate can be achieved compared to the legacy UART controller.
This device is also compliant with USB power management and remote wakeup scheme. Only minimum
power is consumed from the host during Suspend. By integrating all the function in a SOIC-28 package, this
chip is suitable for cable embedding. Users just simply hook the cable into PC or hub’s USB port, and then
they can connect to any RS-232 devices.
Supported Data Formats and Programmable Baud Rate Generator
The PL2303 USB-to-RS232 bridge controller supports versatile data formats and has a programmable baud
rate generator. The supported data formats are shown on Table 2. The programmable baud rate generator
supports baud rates up to 1.2M bps as shown in Table 3.
External EEPROM and Device Configuration
PL-2303 allows storing the configuration data in an external EEPROM. After reset, the first two bytes of
EEPROM are checked. If the value is 067Bh, the EEPROM is valid and the contents of the EEPROM are
loaded as the chip’s default parameters. Otherwise, the chip’s default setting is used. The content of
EEPROM is shown in Table 4 below.
The Device Configuration Register is used to control some vendor-specific functions. The meaning of each
bit in Device Configuration Register is shown in Table 5. Reserved and unused pins always set to the default
value.
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