Rev 2.0
Page 40 of 164
Generic Qseven Carrier Board Hardware User Guide
iWave Systems Technologies Pvt. Ltd.
2.5.3
USB Ports
2.5.3.1
USB Host0 & Host2 Ports
USB Host0 & Host2 interfaces from Qseven MXM connector are connected to dual stack USB Type-A
connector (J25B). Refer.
for the connector location.
Table 8: USB 2.0 Host Ports Connector Pin Outs
Pin No
Pin Name
Signal Type
Voltage Level/
Termination
Description
A1
VBUS1
Power
5V
USB Host Port 0, 5V Power (Bottom).
A2
D1-
Input/Output Differential
USB Host Port 0, Data negative (Bottom).
Connected to 94
th
Pin of Qseven MXM
Connector.
A3
D1+
Input/Output Differential
USB Host Port 0, Data Positive (Bottom).
Connected to 96
th
Pin of Qseven MXM
Connector.
A4
GND1
Power
0V
USB Host Port 0 Ground (Bottom).
B1
VBUS2
Power
5V
USB Host Port 2, 5V Power (Top).
B2
D2-
Input/Output Differential
USB Host Port 2 Data negative (Top).
Connected to 88
th
Pin of Qseven MXM
Connector.
B3
D2+
Input/Output Differential
USB Host Port 2 Data Positive (Top).
Connected to 90
th
Pin of Qseven MXM
Connector.
B4
GND2
Power
0V
USB Host Port 2 Ground (Top).
S1,S2
SHLD
Power
0V
Shield Ground (Bottom).
S3,S4
SHLD
Power
0V
Shield Ground USB2 (Top).