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 USB Interface 5V-3V Regulator Universal Serial Bus Specification Rev. 1.1 USB Transceiver Phase Lock Loop compliant 12 MHz Crystal USB full speed communication and bus powered USB Serial Interface Engine Logic Device Module EP0 Control EP1 Bulk Out EP2 Bulk In EP3 Interrupt EP4 Bulk Out EP5 Bulk In 512 Bytes Unified Buffer System Address/Data Bus USB Printer Class Specification 1.0 compliant IEEE-1284 1994 (bi-directional parallel interface) I/O Data [7:0] Control In [7:0] I/O Data [15:8] Control Out [11:0] Timer/ Counter Dual-Thread Micro-Controller (6 MIPS per Thread) Phase Generator specification compliant Optional external EEPROM for customized USB PL-2305 USB-to-IEEE-1284 Bridge Controller 64 Bytes Data Memory/ Register Interrupt Controller 2K Words Program ROM External Serial EEPROM Interface Vendor ID, Product ID, Device Release Number, IEEE-1284 Parallel Port External EEPROM (Optional) 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 : [email protected] http://www.prolific.com.tw Windows is a registered trademark of Microsoft Corporation. © 1999, Prolific Technology Inc. All rights reserved. March/1999