PROLIFIC PL-2305 Datasheet
PL-2305
USB TO IEEE1284 BRIDGE CONTROLLER
Bi-Direction Parallel Interface
OVERVIEW
The PL-2305 USB-to-IEEE-1284 Bridge Controller is a low-cost high-performance single chip solution that
provides bi-directional connectivity between any standard IEEE-1284 compliant parallel port devices and the
Universal Serial Bus (USB) interface. Software drivers for Microsoft Windows 98 and NT 5.0 are also
provided to create a seamless migration path from traditional parallel port to the USB environment.
The PL-2305 is based on Prolific Technology’s USB Universal Parallel Bridge Controller (U-PBC)
Dual-Thread Micro-Controller. With 512 bytes of unified data buffer, it is capable of providing maximum
throughput for both upstream and downstream data transfer for a wide variety of devices. The IEEE-1284
interface of PL-2305 is robust enough to handle various not-so-compliant parallel port implementations.
FEATURE
Universal Serial Bus Specification Rev. 1.1
compliant
USB full speed communication and bus powered
USB Printer Class Sp ecification 1.0 compliant
IEEE-1284 1994 (bi-directional parallel interface)
specification compliant
Optional external EEPROM for customized USB
5V-3V Regulator
Phase Lock Loop
12 MHz
Crystal
EP0
EP1
Control
Bulk Out
I/O Data [7:0]
I/O Data [15:8]
PL-2305
USB-to-IEEE-1284 Bridge Controller
EP2
Bulk In
Control In [7:0]
Control Out [11:0]
USB Interface
USB Serial Interface Engine
Logic Device Module
EP3
Interrupt
64 Bytes
Memory/
Register
USB Transceiver
EP4
Bulk Out
System Address/Data Bus
Dual-Thread
Micro-Controller
(6 MIPS per Thread)
2K Words
Data
EP5
Bulk In
Program
ROM
512 Bytes
Unified
Buffer
Vendor ID, Product ID, Device Release Number,
IEEE-1284 Parallel Port
External EEPROM
Manufacturer String Descri ptor, Product String
Descriptor, Serial Number String Descriptor, and
The external 2-wire Serial EEPROM could be used to
any other string descriptors up to 248 bytes in total
store customized Vendor ID, Product ID, Device
size
Release Number, Manufacturer String Descriptor,
Low-level printer class drivers provided for
Product String De scriptor, Serial Number String
Windows 98, and Windows 2000.
Descriptor, a nd any other string descriptors to better
48-Pin SSOP package.
represent the customer’s end product.
Prolific Technology Inc.
6F, No. 1, Lane 51, Sec. 1, Nan-Chan Rd.,
Taipei, Taiwan, R. O. C.
Tel : 886-2-2356-8388
Fax : 886-2-2356-8320
E-mail : sales@prolific.com.tw
http://www.prolific.com.tw
Windows is a registered trademark of
Microsoft Corporation. © 1999, Prolific
Technology Inc.
All rights reserved. March/1999
Timer/
Counter
Phase
Generator
Interrupt
Controller
External Serial
EEPROM
Interface
(Optional)
Loading...