User's Manual

Page 11 of 31
Table 2-4 the description of U6100 Power supply and GND pins
Power input Pin name of 60Pin
board to board connector
SN. of 60Pin
board to board connector
DC:
+3.4V～+4.2V input
VBAT
1, 2, 3, 4, 5, 6
USB power input USB_VBUS 39
GND GND 7, 8, 13, 14, 16, 19, 22, 26, 27, 30, 36,
40, 42, 47, 55, 59
2.2.3 USB interface
2.2.3.1 Description
U6100 provides a high-speed USB interface by 60PIN board to board connector, which supports USB 2.0 protocol. The
detail information is given in Table 2-5.
Table 2-5 U6100 USB interface description
Signals of
USB interface
Pins of 60Pin
board to board connector
SN. of 60Pin
board to board connector
Description
USB_VBUS USB_VBUS 39 USB power
DM DM 10 USB Data-
DP DP 12 USB Data+
GND GND 7, 8, 13, 14, 16, 19, 22, 26, 27, 30,
36, 40, 42, 47, 55, 59
GND
2.2.3.2 Reference circuit
The reference circuit of USB interface is shown in Figure 2-7 below.
1) To get the reliable USB power supply, it is recommended to use a 10uF（C406) filter capacitor and a 22pF（C407)
filter capacitor which need to be grounded.
2) To reduce the reflection caused by the high frequency alternating signal in the transmission, it is recommended to