Sam4s ER-280 SERIES - USB Interface

2. Product Specifications
2-8 SAM4S ER-280 SERIES
2-5 Interface Specification
2-5-2 USB Interface
2-5-2-1 Specification
Item Description Remark
Transfer Type
• BULK
Data Signal
• Bi-Direction, Half-Duplex
• Differential Signal Pair (D+ / D-)
Data Format
• NRZI Format
• Zero bit Stuffing after 6 ones
Transceiver
• Differential Common Mode Range : 0.8~2.5[v]
• Differential Receive Sensitivity : 200 [mV]
• Single End Receive Threshold : 0.8~2.5[v]
Speed
• 12 Mbps
Power
• Supply Self power
Cable & connector
• Cable : 5m / 2m
• Connector : B type
Support Spec
• USB Spec Version 1.1
Table 2-9 USB Specification
2-5-1-5 Cable Connection
HOST SIDE
"A" TYPE PLUG
"B" TYPE PLUG
( USB I/F CABLE )
PRINTER
SIDE
Figure2-7 USB Cable Connection