Functional Description
MEN Mikro Elektronik GmbH
50
20BL50S00 E2 – 2014-12-10
3.6
USB Interface
The BL50S provides two USB 2.0 interfaces at the front panel via two automotive
USB connectors. The automotive USB connectors are 100% compliant to standard
connectors but offer a more robust connection.
Connector types:
• 4-pin USB Series A receptacle according to Universal Serial Bus Specification
Revision 1.0
• Mating connector:
4-pin USB Series A plug according to Universal Serial Bus Specification Revi-
sion 1.0
Table 6.
Pin assignment of USB front-panel connectors
Table 7.
Signal mnemonics of USB front-panel connectors
1
+5V
2
USB_D-
3
USB_D+
4
GND
Signal
Direction
Function
+5V
out
+5 V power supply
GND
-
Digital ground
USB_D+, USB_D- in/out
USB lines, differential pair
1
2
3
4