Lucent Technologies USS-720 manual Features, Description, Preliminary Data Sheet, Rev September

Page 27

Preliminary Data Sheet, Rev. 5

September 1999

USS-720Instant USB

USB-to-IEEE*1284 Bridge

Features

Supports standard PC parallel port register-based operation

Device Features:

Full compliance with the Universal Serial Bus Specifi- cation Revision 1.0

On-chip transceivers for USB

Low power consumption allows part to be powered from USB connection

Dual on-chip USB packet buffers for fast response

Fully compatible USB host device drivers available

Fully compliant with USB printer device class specifi- cation

Implemented in Lucent Technologies Microelectron- ics Group’s 0.35 μm, 3 V standard-cell library

Complete single-chip solution in a 44-pin MQFP

Evaluation kit available

IEEE 1284 (Parallel) Features:

Transparent, fully automatic support for true bidirec- tional communication

Hardware initiates and manages automatic negotia- tion for the fastest protocol available

Support of multiple logical channels

Maximum throughput: 1.216 Mbytes/s (ECP mode)

Description

The USS-720 integrated circuit connects an IEEE 1284 parallel port peripheral to the universal serial bus (USB). It is designed to be a low-cost, single-chip embedded solution requiring minimal external components. It is suitable for a wide range of applications, from integrated applications where the IC is mounted on a printed- circuit board inside a product, to stand-alone applica- tions where the chip provides a standard parallel port to a USB-capable computer. The USS-720 software included in the Evaluation Kit allows peripheral vendors to evaluate and test the USS-720 device, which is embedded in the Centronicsend of a USB-to-parallel port cable provided with the kit. This solution requires no firmware changes on the parallel port peripheral.

*IEEE is a registered trademark of The Institute of Electrical and Electronics Engineers, Inc.

Centronics is aregistered trademark of Centronics Data Com- puter Corporation.

USS-720

 

 

BUFFER

 

PLL

OSCILLATOR

 

 

RAM

 

 

 

 

 

 

CONTROL

 

 

 

 

 

AND INTERFACE

IEEE 1284

IEEE 1284

 

 

 

LOGIC

HOST

BUFFERS

 

 

SELECT LOGIC

 

 

 

USB

USB

UDC

NONVOLATILE

EEPROM

 

PORT

XCVR

CORE

 

CONFIGURATION

INTERFACE

 

 

 

EXTERNAL SERIAL EEPROM

Figure 1. Block Diagram

IEEE 1284

PARALLEL

PORT

PERIPHERAL

13

5-5109a.r6

Note: Advisories are issued as needed to update product information. When using this data sheet for design purposes, please contact your Lucent Technologies Microelectronics Group Account Manager to obtain the latest advisory on this product.

Lucent Technolgies Inc.

5-1

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Contents Information Manual, Rev September IntroductionTable of Contents September USB-to-IEEE Bridge Information Manual, Rev Evaluation Kit for USS-720USS-720 USB Device Driver Preliminary User Guide IOCTL1284 TerminateIOCTLSET1284REGISTER USS-720 USB Port Monitor Application Note Evaluation Kit Contents \SAMPLES Hardware RequirementsGetting Started Instructions OSR2.1 Cable Installation InstructionsWindows 98 Cable Installation Instructions Software UpdatesUSB Driver and Port Monitor Plug and PlayPort Creation Eeprom Lucent Technologies Inc In-System Design, Inc Lucent Technologies Microelectronics GroupUSB Applications Support September Introduction Evaluation Kit SoftwareUSS-720 Driver Software Object Code License Agreement FebruaryOwnership USS-720 Software Use Agreement FebruaryLicensed Software Furnishing of Licensed SoftwareFebruary Software Use Agreement USS-72004 Confidentiality Warranty and IndemnityAgreement Prevails Nothing ConstruedIntegration PublicityNonassignability AddressesDisputes Applicable LawUSS720.SYS USS720.INFDocumentation USS-720 Software Use Agreement February Application Note, Rev February Software ComponentsCustomer-Defined Data Plug and Play Operation PnPPrinter Enumeration USB Hardware Types Supported Power ManagementInstallation Process Operating Systems SupportedPrint Types Supported Printer Types SupportedFeatures Preliminary Data Sheet, Rev SeptemberDescription Table of Contents Preliminary Data Sheet, Rev USS-720 Pin InformationUSB-to-IEEE Parallel Port nAck Signal Active-Low Parallel Port nAutoFd Signal Active-LowParallel Port nSelectIn Signal Active-Low Parallel Port nInit Signal Active-LowDescriptor Locations OverviewUSB Port Device Descriptor, Configurations, and Inter- facesUSB-to- Ieee 1284 Bridge September Onboard Device DescriptorDevice Descriptor Offset Field Size Value Description Configuration Descriptor USB-to- IeeeBulk Out Endpoint Descriptor, I0A0E1 Interface DescriptorsSeptember USB-to-IEEE1284 Bridge Bulk Out Endpoint Descriptor, I0A1E1Bulk In Endpoint Descriptor, I0A1E2 Bulk Out Endpoint Descriptor, I0A2E1 Bulk In Endpoint Descriptor, I0A2E2Interrupt Endpoint Descriptor, I0A2E3 Pipes RequestsStandard Requests Get Port Status Data Bit Description Printer Class-Specific RequestsVendor-Specific Requests GET1284REGISTERSET1284REGISTER Register-Based Operation Ieee 1284 PortByte Register Data RegistersGET1284REGISTER Data Byte Register Data Interrupt Pipe Read DataStatus Register Address Bit Symbol Default Bit Symbol Bit DescriptionParallel Port nFault Signal Reserved USB-to-IEEE1284 Bridge Control Register Address Bit SymbolAccess Default Bit Symbol Bit Description Parallel Port nInit SignalUSS-720Instant USB ECP Command Register Address Bit Symbol Access Mode20 Description Extended Control Register Address Bit SymbolUSS-720 Control Register Address Bit Symbol USS-720 Setup Register Address Bit Symbol Interrupts External Crystal Connection External Circuitry RequirementsAbsolute Maximum Ratings Parameter Symbol Min Unit Filter Bypass ModeHigh Drive Mode Self-Powered ModeClklo Clkhi Electrical CharacteristicsParameter Symbol Test Conditions Min Typ Max Unit Capacitance Values Parameter UnitTiming Characteristics Setup and Hold Input Timing ParameterOutput Delay Timing Parameter Min Max Unit Device Code Package Comcode Outline DiagramOrdering Information Pin MqfpApplication Note February Description USS ParallelPort Bridging USB to Typical Circuit ShowingLucent Technologies Inc Preliminary User Guide, Rev February Signal DirectionsIOCTL1284 Setmode USB Device Driver InitializationO File Functions Preliminary User Guide, Rev USS-720 FebruaryCreateFile ReadFile Error CodesWriteFile DeviceIoControl CloseHandle Control Code Description O Control CodesParameters IOCTL1284 EcpfwdtorevIOCTL1284ECPREVTOFWD IOCTL1284 Ecpsetchannel IOCTL1284 Setmode Register Mode DescriptionIOCTL1284 Terminate Bulkinpipe IoctlabortpipeValue Description BulkoutpipeIoctlcancelpiperequest IOCTLGET1284REGISTER ALTINTERFACE2 IoctlgetaltsettingALTINTERFACE0 ALTINTERFACE1Ioctlgetcapabilities Ioctlgetconfigurationdescriptor Ioctlgetdevicedescriptor Ioctlgetdeviceinstances Ioctlgetinterface Bit Meaning IoctlgetportstatusCommand Description IOCTLISSUEUSS720COMMANDByte Description IoctlreadinterruptpipeIoctlresetpipe IOCTLSET1284REGISTER Ioctlsetaltsetting Ioctlsoftreset Data Structure O Control Data StructuresDeviceinstanceheader DeviceinstanceREGISTER1284, *PREGISTER1284 REGISTER1284ADVREGISTER1284, *PADVREGISTER1284 ADVREGISTER1284Lucent Technologies Inc USS-720 USB Port Monitor Printer Cable with Instant USB USS-720 Application Note USB Port Monitor FebruaryClick on Enter Library Software Installation InstructionsW98USS720EvalKit2402.zip to download the installation files Application Note JuneSeptember MN99-052CMPR-1 Replaces MN97-061CMPR-04