Compaq SmartCore Express SMA200 - Manual (Page 28)

DIGITAL-LOGIC AG SMA200 Manual V1.0
28
5.4.4. USB
Signal BUS Type Description
On Module
Termination Ext. Ter-
mination
Needed Max.
Length
in mm
Ohm
Matched
Length
in mm
USB_[0..7] +/- USB Dif Differential USB data signal
pair - - 300 100 0.2
USB_OC[0..7]# USB 3.3V
In
USB overcurrent signal PU 10k to
3.3V - 300 55
If the signals are not used:
All these USB signals may be left open.
Remarks:
EMV/EMI-filters:
Use a choke and clamping diode on each signal pair.