Interfaces and Connectors
EBX-22 Reference Manual
40
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
OLID
S
TATE
D
RIVE
C
ONNECTOR
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.
Table 14: USB5 Solid State Drive Pinout
J13 Pin Signal Name Function
1 USB_PWR
+5.0V
(Protected)
2 NC
No
Connection
3 USBDT5
-
USB5
Data
-
4 NC
No
Connection
5
USB5 Data +
6 NC
No
Connection
7 GND
Ground
8 NC
No
Connection
9 Key
Pin
Removed
10 LED#
LED
Output
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.
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