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Prolific Technology Inc.
7F, #48, Sec.3, Nan-Kang Rd., Taipei, Taiwan 115, ROC
Tel: 886-2-2654-6363 Fax: 886-2-2654-6161
E-mail:
sales@prolific.com.tw
http://www.prolific.com.tw
PL-2351 Product Brochure
V1.0 04/12/02
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 printers,
keyboards, mice, modems, hard disks, 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.
Block Diagram
USB Device Controller
PL-2351
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
8bit / 48MHz
Micro-Controller
(80C32 compatible)
ROM
General Purpose
Controller
Serial Port
Controller
(3 Channels)
Analog to Digital
Controller
Programmable
DMA Controller
RAM/FIFO
Phase
Lock
Loop
12 MHz
C
l
USB Interface
28-pin GPIO
8/16-bit DMA
Analog
Signal
Input
Serial/
PS/2
Port
USB Transceiver
USB SIE
USB Controller
5V
5V–3.3V
Regulator
3.3V