PROLIFIC PL-2351 Datasheet

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PL-2351 Product Brochure

V1.0 04/12/02

PL-2351
USB Device Controller

Overview

PL-2351 is a single chip full-speed USB device controller, including an enhanced 8032 core, an intelligent
USB core, 4-channel 8bit/12bit ADC and a variety of smart I/O ports via programmable DMA interface. With
diversity of IO ports, PL-2351 offers an optimal solution for a list of extensive peripherals such as pri nters,
keyboards, mice, modems, hard dis ks, CMOS sensors, microphones, etc. Flexible endpoint configuration
including its buffer partition lets users easily establish control, isochronous-in/out, bulk-in/out or
interrupt-In/out pipes to communicate with USB host. In addition, with the capability of supporting up to five
USB addresses, it is possible to configure the chip as a composite or a compound device. Designed to be
flexible, high performance, and easy-to-use, PL-2351 can help customers easily implement their products.

Features

• USB 1.1 Specification compliant

• 4-phase 80C32-compatible controller running up to 48

MHz

• Capable of supporting USB HID class, Mass-storage

class and Printer class

• Embedded 5V~ 3.3V 100mA regulator for USB interface

and internal circuit

• Default control endpoint and 15 programmable endpoints

• Support up to five USB addresses for compound

or composite device

• 4K SRAM and Memory Access Unit (MAU) to configure

each endpoint’s buffer partition

• Programmable-DMA (PDMA) controller supports generic

parallel interface such as CMOS Sensor, EPP/ECP,
ATAPI, 8237 DMA, etc.

• Three configurable serial ports. Each serial port can be

configured as a generic serial port up to 1.25Mbps or a
PS2 host.

• Four 8bit/12bit ADC with sampling rate up to 24 KHz

• 16 extra GPIO pins. 8 of them can be configured as level

or edge sensitive triggered interrupt sources.

• Advanced interrupt mechanism to ease the handshake

overhead

• Advanced power management mechanism

• 32K * 8 embedded ROM

• 2 16-bit programmable timer

• Watch dog timer (WDT)

• Capable of supporting 2-wire EEPROM

Block Diagram

12 MHz

Phase

Lock
Loop

8bit / 48MHz

Micro-Controller

(80C32 compatible)

RAM/FIFO

ROM

General Purpose

Controlle

in GPIO 8/16-bit DM

28-

5V

5V–3.3V

Regulator

3.3V

USB Interface

USB Transceive

USB Controller

Serial Port

Controller

(3 Channels)

Analog to Digital

Controller

Programmable

DMA Controller

Serial/
PS/2
Port

nalog
Signal
Input

Prolific Technology Inc.

7F, #48, Sec.3, Nan-Kang Rd., Taipei, Taiwan 115, ROC

Tel: [phone] Fax: [phone]

E-mail: [e-mail]

http://www.prolific.com.tw