Usb(Universal Serial Bus) Interface - Epson Stylus Photo 750 Service Manual

EPSON Stylus Photo 750

1.3.4 USB(Universal Serial Bus) Interface

Following shows specification.
† Standard: Based on
„ Universal Serial Bus Specifications Revision 1.0
„ Universal Serial Bus Device Class Definition for Printing Devices
version 1.0
† Bit rate:
† Data encording:
† Adaptable connector:
† Recommended cable length: 2 meters
Table 1-14. Connector pin assignment and signals
Pin.
Signal Name I/Out
No
1 VCC --
Bi-
2 -Data
directional
Bi-
3 +Data
directional
4 Ground --
Product Description
12Mbyte(Full Speed Device)
NRZI
USB Series B
Function Description
Cable power. Maximum power
consumption is 100mA.
Data
Data. Pull up to +3.3V via 1.5K ohm
resistor.
Cable ground.
Parallel Interface
Figure 1-11. USB Interface Port
Revision A
19