Smbus Header (Smbus1); Internal Usb Headers (F_Usb2_1, F_Usb2_2 , Usb2_1) - AXIOMTEK IMB541 User Manual

2.3.15

SMBus Header (SMBUS1)

The SMBUS1 (4x1-pin p=1.25mm) is for SMBus (System Management Bus) interface.
Pin Signal
1 GND
3 SMB_CLK
Power on this Pin is 5V by default, 3.3V is available if specified. (resistor
selectable)
Note
2.3.16

Internal USB Headers (F_USB2_1, F_USB2_2 , USB2_1)

These are 5x2-pin p=2.54mm headers for USB 2.0 interface.
Pin Signal
1 +5 V_DUAL
3 USB -
5 USB +
7 GND
The USB2_1 is a Type-A 180D connector for USB2.0 signal.
Pin Signal
1 +5 V_DUAL
2 USB -
3 USB +
4 GND
Board and Pin Assignments
Pin Signal
2 SMB_DATA
4 5V
Pin Signal
2 +5 V_DUAL
4 USB -
6 USB +
8 GND
10 GND
IMB540 User's manual
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