Lucent Technologies USS-720 September USB-to-IEEE1284 Bridge, Bulk In Endpoint Descriptor, I0A1E2

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	Preliminary Data Sheet, Rev. 5				USS-720Instant USB
	September 1999				USB-to-IEEE1284 Bridge

	USB Port (continued)
	Interface 0, Alternate Setting 1 (I0:A1)
	Table 8. Interface Descriptor, I0:A1

	Offset	Field	Size	Value	Description
	0	bLength	Byte	0x09	Size of this descriptor in bytes.

	1	bDescriptorType	Byte	0x04	Interface descriptor type.

	2	bInterfaceNumber	Byte	0x00	Zero-based value identifying the number of this interface.

	3	bAlternateSetting	Byte	0x01	Value used to select this alternate interface.

	4	bNumEndpoints	Byte	0x02	Number of endpoints used by this descriptor.

	5	bInterfaceClass	Byte	0x07	Printer class.

	6	iInterfaceSubClass	Byte	0x01	Printer subclass.

	7	bInterfaceProtocol	Byte	0x02	Bidirectional interface.

	8	iInterface	Byte	0x00	Index to string describing this interface.

	Table 9. Bulk Out Endpoint Descriptor, I0:A1:E1

	Offset	Field	Size	Value	Description
	0	bLength	Byte	0x07	Size of this descriptor in bytes.

	1	bDescriptorType	Byte	0x05	Endpoint descriptor type.

	2	bEndpointAddress	Byte	0x01	This is an Out endpoint, endpoint number 1.

	3	bmAttributes	Byte	0x02	This is a Bulk endpoint.

	4	wMaxPacketSize	Word	0x0040	Maximum data transfer size.

	6	bInterval	Byte	0x00	Does not apply to Bulk endpoints.

	Table 10. Bulk In Endpoint Descriptor, I0:A1:E2

	Offset	Field	Size	Value	Description
	0	bLength	Byte	0x07	Size of this descriptor in bytes.

	1	bDescriptorType	Byte	0x05	Endpoint descriptor type.

	2	bEndpointAddress	Byte	0x82	This is an In endpoint, endpoint number 2.

	3	bmAttributes	Byte	0x02	This is a Bulk endpoint.

	4	wMaxPacketSize	Word	0x0040	Maximum data transfer size.

	6	bInterval	Byte	0x00	Does not apply to Bulk endpoints.

Lucent Technologies Inc.

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Contents Information Manual, Rev September IntroductionTable of Contents September USB-to-IEEE Bridge Information Manual, Rev Evaluation Kit for USS-720IOCTLSET1284REGISTER USS-720 USB Device Driver Preliminary User GuideIOCTL1284 Terminate 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 UpdatesPort Creation USB Driver and Port MonitorPlug and Play 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 LawDocumentation USS720.SYSUSS720.INF USS-720 Software Use Agreement February Application Note, Rev February Software ComponentsPrinter Enumeration Customer-Deﬁned DataPlug and Play Operation PnP USB Hardware Types Supported Power ManagementInstallation Process Operating Systems SupportedPrint Types Supported Printer Types SupportedDescription FeaturesPreliminary Data Sheet, Rev September Table of Contents USB-to-IEEE Preliminary Data Sheet, Rev USS-720Pin Information 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- facesDevice Descriptor Offset Field Size Value Description USB-to- Ieee 1284 Bridge SeptemberOnboard Device Descriptor Conﬁguration Descriptor USB-to- IeeeBulk Out Endpoint Descriptor, I0A0E1 Interface DescriptorsBulk In Endpoint Descriptor, I0A1E2 September USB-to-IEEE1284 BridgeBulk Out Endpoint Descriptor, I0A1E1 Interrupt Endpoint Descriptor, I0A2E3 Bulk Out Endpoint Descriptor, I0A2E1Bulk In Endpoint Descriptor, I0A2E2 Standard Requests PipesRequests Get Port Status Data Bit Description Printer Class-Speciﬁc RequestsSET1284REGISTER Vendor-Speciﬁc RequestsGET1284REGISTER Register-Based Operation Ieee 1284 PortByte Register Data RegistersGET1284REGISTER Data Byte Register Data Interrupt Pipe Read DataParallel Port nFault Signal Reserved Status Register Address Bit SymbolDefault Bit Symbol Bit Description 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 UnitOutput Delay Timing Parameter Min Max Unit Timing CharacteristicsSetup and Hold Input Timing Parameter 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