Epson Stylus Photo785EPX, Service Manual

Page: 14 / 192

EPSON Stylus PHOTO 895/785EPX/915/825 Revision B
PRODUCT DESCRIPTION INTERFACE 14
1.3 INTERFACE
The EPSON Stylus PHOTO 895/785EPX/915/825 provides USB interface as standard.
1.3.1 USB Interface
Standard: Based on:
“Universal Serial Bus Specification Rev. 1.1”
“Universal Serial Bus Device Class Definition
for Printing Device Version 1.1” (Printer)
“Universal Serial Bus Mass Storage Class
Bulk-Only Transport Rev. 1.0” (Storage)
Bit Rate: 12Mbps (Full Speed Device)
Data Encoding: NRZI
Adaptable Connector: USB Series B
Recommended Cable Length: 2 meters
Figure 1-3. USB Pin Assignment
†
Device ID
[00H] [51H]
MFG: EPSON;
CMD: ESCPL2, BDC, D4;
MDL: Stylus [SP] Photo [SP] 895(or 785EPX or 915 or 825);
CLS: PRINTER;
DES: EPSON [SP]Stylus [SP] Photo [SP] 895(or 785EPX or 915 or 825);
Table 1-3. Connector Pin Assignment and Signals
Pin No. Signal Name I/O Function Description
1 VCC - Cable power. Max. power consumption is 2mA.
2 -Data Bi-D Data
3 +Data Bi-D Data, pull up to +3.3 V via 1.5K ohm resistor.
4 Ground - Cable ground
Pin #1
Pin #3
Pin #2
Pin #4