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12048231 Rev. 00 (Draft)
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4.10. USB 3.0 19-pin Pin-header
Reference Designator: J25
2.0mm Pitch Pin-header, THT, straight, 19 circuits
Description
The J25 standard USB3.0 internal pin-header provides two USB3.0 ports via PCIexpress to USB3.0 Bridge
TUSB7320.
The TUSB7320 is connected to PCIe Lane “C” of the SMARC module.
Interfaces used
USB 2.0 port 6 and 7 of the USB controller
USB 3.0 port 6 and 7 of the USB controller
Supplied by 5V S0 voltage (V_5V0_S0). Current limited to 0.9 A per port
Connector drawing and contact-numbering scheme
Figure 19 USB2.0 Pin-header
– J25
Pinout
J25
Pin
Signal / Function
Pin Type
Signal Description
1
V_5V0_S0_USB6
Power (5V)
5V/900mA power-supply for device 6
2
USB_SSRX6_N
I DP
neg. signal of the differential Port 6 RX datapair
3
USB_SSRX6_P
I DP
pos. signal of the differential Port 6 RX datapair
4
GND_USB6
GND
Power ground for port 6
5
USB_SSTX6_N
O DP
neg. signal of the differential Port 6 TX datapair
6
USB_SSTX6_P
O DP
pos. signal of the differential Port 6 TX datapair
7
GND_USB6
GND
Power ground for port 6
8
USB2_6_N
IO DP
neg. signal of the differential Port 6 datapair
9
USB2_6_P
IO DP
pos. signal of the differential Port 6 datapair
10
ID
NC
n/a
11
USB2_7_P
IO DP
pos. signal of the differential Port 7 datapair
12
USB2_7_N
IO DP
neg. signal of the differential Port 7 datapair
13
GND_USB7
GND
Power ground for port 7
14
USB_SSTX7_P
O DP
pos. signal of the differential Port 7 TX datapair
15
USB_SSTX7_N
O DP
neg. signal of the differential Port 7 TX datapair
16
GND_USB7
GND
Power ground for port 7
17
USB_SSRX7_P
O DP
pos. signal of the differential Port 7 RX datapair
18
USB_SSRX7_N
O DP
neg. signal of the differential Port 7 RX datapair
19
V_5V0_S0_USB7
Power (5V)
5V/900mA power-supply for device 6
20
Key (removed pin)
Key
n/a