Interfaces; 7- 1．Usb - SANEI ELECTRIC SK1-21A Technical Manual

7．Interfaces
7- 1．USB
(1) Pin layout
Connector:
This printer is equipped with USB version 2.0 for high speed data transfer.
The device class is "Printing Device."
Pin
1
2
3
4
5
（2）Electronic characteristic
（Power supply voltage）
（Input level）
Differential input sensitivity
Differential common mode
range
Single end receiver threshold
（Output level）
"L"Level
"H"Level
SK1-21A/31A
Mini-B type 5-PIN
1
Signal Direction
VBUS -
D- I/O
D+ I/O
N.C
GND -
Parameter
5
Function
Detect connect/disconnect of USB
USB data (-)
USB data (+)
GND
Signal Conditions
VBUS
VDI |(D+)-(D-)|
VCM Including VDI
VSE
VOL RL of 1.5kΩ to
3.6V
VOH RL of 15kΩ to
GND
Min. Max. Unit
4.40 5.25 V
0.2 V
0.8 2.5 V
0.8 2.0 V
0.3 V
2.8 3.6 V
４１