Interface Specifications; Usb Specifications - Epson 1240U Service Manual

EPSON Perfection 1240U

1.3 Interface Specifications

This section provides specifications of the USB, the only interface supported by
the Perfection 1240U and the Perfection 1240U PHOTO.

1.3.1 USB Specifications

Any items not included in this specification shall be in compliance with
Universal Serial Bus Specification Revision 1.1.
Configuration: See Table 1-2.
Electric specification: Compliant to Full Speed mode (12Mbit/s) of
Universal Serial Bus Specification Revision
1.0.
Connector: One Receptacle (Series B)
Connector Pin Assignment: See the following figure.
2
3
Figure 1-3. Connector Pin Location
Table 1-1. Connector Pin Assignment
Pin No.
1
2
3
4
Product Description
1
4
Signal
VCC
-Data
+Data
GND
Interface Specifications
Table 1-2. Configuration
Element
• Class: Vendor specific
• Subclass: Vendor specific
• Protocol: Vendor specific
Device • Maximum packet size for endpoint 0:
• Vendor ID: 0x04B8 (Seiko EPSON Corp.)
• Product ID: 0x010B
• Number of possible configurations:
• Number of interfaces supported by this configuration: 1
• Characteristics: Self-powered
Configuration
• Remote wake up feature: Not supported
• Maximum of possible consumption: 2mA
• No Alternate setting
• Number of endpoints used by
this interface (excluding endpoint 0):
Interface
• Class: Vendor specific
• Subclass: Vendor specific
• Protocol: Vendor specific
• Bulk IN transfer
Endpoint 1
• Maximum data transfer size: 64 byte
• Bulk OUT transfer
Endpoint 2
• Maximum data transfer size: 64 byte
• iManufacturer: "EPSON"
String
Descriptor • iProduct: "Perfection 1240U"
Revision A
Description
64bytes
1
2
12