
USB1.1 Interface
USB1.1 Interface
A USB 1.1 (Universal Serial Bus) connector provides a common interface to connect a wide
variety of keyboards, modems, mice, and telephony devices to the
EPM-CPU-10
. With USB 1.1,
there is no need to have separate connectors for many common PC peripherals.
The USB 1.1 interface on the
EPM-CPU-10
is UHCI (Universal Host Controller Interface)
compatible, which provides a common industry software/hardware interface.
This connector is protected with IEC 61000-4-2 (Level 4) rated TVS components to help protect
against ESD damage.
Table 17: USB 1.1 Interface Connector
JS4
Pin
Signal
Name
Function
JD
Pin
1B U5V
(Protected) 1
2B GND
Ground
6
3B USBP00
Channel 0 Data –
2
4B GND1
Cable
Shield
7
5B USBP01
Channel 0 Data +
3
6B USBP11
Channel 1 Data +
8
7B GND1
Cable
Shield
4
8B USBP10
Channel 1 Data –
9
9B GND
Ground
5
10B U5V
(Protected) 10
Warning!
Connector JD is not numbered in the conventional manner as most dual-row
headers. Care must be taken to attach the USB 1.1 adapter cables as shown below
to prevent voltage reversal.
Figure 8. USB 1.1 Connector Orientation Diagram
36 – Reference
EPM-CPU-10 Reference Manual