Oki Microline 3321 - Universal Serial Bus (USB) (at USB Ver.)

42089201TH Rev.4 17 /
Oki Data CONFIDENTIAL
2.1.5 Universal Serial Bus (USB) (at USB Ver.)
Universal Serial Bus Specification Revision 1.0 compliance.
1) Connector
• Printer Side : “B” Receptacle (Upstream Input to the USB Device)
• Cable Side : Series “B” Plug
2) Cable
• Cable Length : Approx 1.8m (A cable must be met USB Spec Rev 1.1 for normal
operation)
Note: Cable is not supplied.
3) Table of USB I / F signals
Contact Signal Name Typical Wiring
Number Assignment
1 Vbus Red
2 D - White
3 D + Green
4 GND Black
Shell Shield Drain Wire
4) Connector pin arrangement
2
34
1
5) Mode & Class of Device
• Full - speed Driver
• Self - powered Device
6) Data Signaling Rate
• Full - speed function - 12Mb/s ± 0.25%(2500ppm)
7) Receive Buffer
• 2044K Bytes
8) Interface circuit
3.3 V
1.5 k
Ω
Rs = 22 Ω
TxD+
Rs
Full-speed
Buffer
Rs
TxD-