PROLIFIC PL-2555 Datasheet

PL-2555 Product Brochure

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V1.0 08/05/02

PL-2555
Hi-Speed USB Docking Controller

OVERVIEW

The PL-2555, an USB 2.0 docking IC, is consisted of four types of most commonly used peripheral interfaces,
namely ATAPI (IDE), Parallel, Serial, and PS/2 interfaces. It is intended to provide an off-the-shelf single chip
solution for portable equipments, such as notebook, to extend the peripheral capability via the USB2.0 bus
with 480Mbps transfer rate. An USB 2.0 hub is embedded to achieve the most cost-effect goal for
multi-peripheral solution.
To take advantage of Plug-and-Play, all the peripheral interfaces, except the serial interface, are
implemented according to the related USB class specifications: a USB mass storage class for ATAPI devices;
a USB printer class for printers; a USB HID device for keyboard and mouse. Since the default drivers are
embedded within most of current OS, no extra driver is needed.
It is possible to configure the parallel controller to implement the ECP/EPP modes to work with parallel
devices other than printers. For some specific applications, the parallel interface can be configured as an
extra ATAPI (IDE) interface.

FEATURES

• Full compliance with the Universal Serial Bus

Specification v2.0.

• On chip USB 2.0 PHY

• On chip 3.3V-2.5V 150mA regulator for core

circuit in 0.25um process version

• Advanced power management mechanism.

• Consist of one hub, one ATAPI controller for

IDE, one parallel controller for printer port or
IDE, 3 serial controllers for one UART and 2
PS/2 ports

• Conform to USB mass storage class

specification

• Conform to USB Printer Class Specification

• Conform to USB HID Class Specification

• Support A T API PIO/DMA/UDMA-66

• Support serial interface communication up to 1M

bps.

• Option external serial EEPROM interface to

store vender-specific information.

• Package type: LQFP128(TBD)

BLOCK DIAGRAM

12 MHz
Crystal

Phase

Lock
Loo

Serial/PS2

Controller

Serial Device

Keyboard

and Mouse

3.3V–2.5V
Regulator

Power

Management

PS2

3.3V

powe

Hub

Parallel

Controller

Parallel

Interface

ATAPI

Device

USB Host

USB2.0 PHY

USB2.0 SIE

USB2.0 Controller

ATAPI

Controller

ATAPI
Device

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