PL-2305 USB TO IEEE1284 BRIDGE CONTROLLER Bi-Direction Parallel Inter face
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
US B In terfac e
Universal Serial Bus Specification Rev. 1.1 compliant USB full speed communication and bus powered USB Printer Class Specification 1.0 compliant
12 M H z Cry sta l
5V-3 V R eg u lator
USB Tran sce iver
Pha se Lo ck Lo op
U SB Se ria l In terfac e Engine
Lo gi c D e vic e M o du le
EP 0 Co nt ro l
EP1 Bu lk O ut
EP2 Bu lk In
EP3 Interrup t
EP4 Bu lk O ut
EP 5 Bulk In
512 By tes Unified Bu ffe r
Sy st em Address /D at a Bus
I/O Data [7 :0 ]
Co ntro l In [7 :0]
C o nt ro l Ou t [1 1: 0]
IEEE-1284 1994 (bi-directional parallel interface) specification compliant Optional external EEPROM for customized USB Vendor ID, Product ID, Device Release Number,
I/O D at a [1 5: 8]
Dua l-Thread M i cro-C ontroller (6 M IPS per T hre ad )
Tim e r/ Co un te r
Pha se Genera tor
P L - 2305 US B -t o-IEEE -1284 Brid g e C on troller
64 B yte s Dat a Me m ory / Re gi st er
Interrup t Co nt ro ll er
2K W ords Program RO M
Ex tern al Se ria l EE PRO M Interfac e
IE E E- 1284 Pa rallel P o rt
Exte rn al E E PR OM
(O pt iona l)
Manufacturer String Descriptor, Product String Descriptor, Serial Number String Descriptor, and any other string descriptors up to 248 bytes in total size Low-level printer class drivers provided for Windows 98, and Windows 2000. 48-Pin SSOP package.
The external 2-wire Serial EEPROM could be used to store customized Vendor ID, Product ID, Device Release Number, Manufacturer String Descriptor, Product String Descriptor, Serial Number String Descriptor, and any other string descriptors to better represent the customer ’s end product.
Prolific Technology Inc.
7F, No. 48, Sec. 3, Nan-Kang Rd., Taipei, Taiwan, R. O. C. Tel : 886-2-2654-6363 Fax : 886-2-2654-6161 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
