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USB
The USB interface on the EBX-22 is UHCI (Universal Host Controller Interface) and EHCI
(Enhance Host Controller Interface) compatible, which provides a common industry
software/hardware interface. There are six USB ports. Four standard USB Series A sockets
(USB0-3) are located on the base board at locations J3, J4, J9, and J11. USB4 is available on the
CBR-4004 I/O board as a screw terminal connector at location J1. And USB5 is a 10-pin solid
state drive (SSD) interface on the base board at location J13.
These connectors use IEC 61000-4-2-rated TVS components to help protect against ESD damage.
BIOS C
ONFIGURATION
Three USB 1.1 controllers (UHCI) use PCI interrupt INTA#, INTB#, and INTC#. One USB 2.0
(EHCI) controller uses PCI interrupt INTD#. CMOS Setup is used to select the IRQ line routed to
each PCI interrupt line.
USB S
S
OLID
TATE
The USB SSD connector J13 accepts Intel Z-U130 low profile or equivalent drives. These drives
are available in capacities of 1 GB, 2 GB and 4 GB. The following table shows the pinout of the
J13 connector.
The USB SSD can be secured to the base board using 4.5 mm x 5 mm x M2.5 thread standoff,
such as the RAF Electronic Hardware part M2100-2545-SS.
EBX-22 Reference Manual
D
C
RIVE
ONNECTOR
Table 14: USB5 Solid State Drive Pinout
J13 Pin
Signal Name Function
1
USB_PWR
2
NC
3
USBDT5-
4
NC
5
USBDT5+
6
NC
7
GND
8
NC
9
Key
10
LED#
Interfaces and Connectors
+5.0V (Protected)
No Connection
USB5 Data -
No Connection
USB5 Data +
No Connection
Ground
No Connection
Pin Removed
LED Output
40
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