Usb (Universal Serious Bus) - Epson Stylus COLOR 670 Service Manual

EPSON Stylus Color 670

1.3.3 USB (Universal Serious Bus)

Following shows specification.
o
Standard:
n
Universal Serial Bus Specifications Revision 1.0
n
Universal Serial Bus Device Class Definition for Printing Devices
version 1.0
o
Bit rate:
o
Data encoding:
o
Adaptable connector:
o
Recommended cable length: max. 2 meters
Table 1-8. Connector Pin Assignment and Signals
Pin.
Signal Name I/Out
No
1 VCC --
2 -Data I/O
3 +Data I/O
4 Ground --
Product Description
12Mbps (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.
Figure 1-4. USB Interface Port
Interface
Revision A
19