Functional Description
Page 55
3.11
USB
The BL51E supports:
xHCI implementation
3.11.1
Front Connection
Table 19.
Connector types – USB 2.0
Table 20.
Pin assignment – USB 2.0
Table 21.
Signal mnemonics – USB 1.x/2.0
Connector
Type
On BL51E
4-pin USB Type A receptacle according to Universal Serial Bus
Specification Revision 1.0
Mating
4-pin USB Type A plug according to Universal Serial Bus Specification
Revision 1.0
1
+5V
2
USB_D-
3
USB_D+
4
GND
Signal
Direction
Function
+5V
out
+5 V power supply
GND
-
Digital ground
USB_D+/-
in/out
USB lines
1
2
3
4