PC-D320/PC-D340/FAX-L400 Chapter 1: General Description
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2.7 Interface Spcifications
Serial interface (USB)
a) Specifications
Interface Type
USB Interface (Universal Serial Bus; USB Specification Release Number 1.10)
Data Transmission
Control transfer method
Bulk transfer method
Signal Voltage Level
Input:
Input defference sensitivity: +0.2V (Max.)
Common-mode defference: +0.8V to +2.5V
Output:
Static output high: +2.8V to 3.6V
Static outpu low: less than +0.3V
Input/Output
Data signal pulled up with 3.3V
VBUS signal pulled up with 5.5V
Interface Cable
Twisted-pair shielded cable
USB standard compatible required
Material AWG No. 28, Data pair (AWG: American Wire Gauge)
AWG No. 20 to No. 28, Power distribution pair
Interface Connector
Printer-side USB standard, Series B receptacle
Cable-side USB standard, Series B plug
Figure 1-3 USB Connector (J1)
J1 PC Signal name Description
1 ← 1 VBUS Cable power supply (+5V DC)
2 — 2 D– Data
3 — 3 D+ Data
4 — 4 GND Cable GND
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