Service manual

EPSON Perfection 1250/1250 PHOTO Appendix
48
6.2 Interface Specifications
This scanner is equipped with a standard USB interface as described below.
6.2.1 USB Interface
The scanner has the following configuration specifications.
.
Electrical specifications Conforms to high-speed (12 Mbps) mode
specifications in the Universal Serial Bus
specifications Revision 1.1
Connector B receptacle x 1
Figure 6-2. B Receptacle Pin Layout
Device
Max. packet size or end point 0: 8 bytes
Vendor ID: 0x04B8
Product ID: 0x010F
No. of connectors: 1
Configuration
Interfaces supported: 1
Characteristics
• Self-powering
• Remote
• Wake-up function not yet supported
• Bus power consumption: 2 mA
Interface 0
Alternate setting values: None
No. of end points: 3
End point 1
Interrupt IN transfer
Max. packet size: 1 byte
End point 2
Bulk In transfer
Max. packet size: 64 bytes
End point 3
Bulk out transfer
Max. packet size: 64 bytes
String descriptor
Manufacturer's name: "EPSON"
Product name: "Perfection 1250/1250 PHOTO"
Pin No. Signal
1VCC
2 –Data
3+Data
4GND