User's Guide

HE863 Family Hardware User Guide
1vv0300891 Rev.5
- 2011-03-18
Reproduction forbidden without Telit Communications S.p.A’s. written authorization - All Rights
Reserved. Page 65 of 89
10. USB Port
The HE863 Family module includes a Universal Serial Bus (USB)
transceiver, which operates at USB low-speed (1.5Mbits/sec),
USB full-speed (12Mbits/sec) and USB high-speed (480Mbits/sec).
It is compliant with the USB 2.0 specification and can be used
for diagnostic monitoring, control and data transfers.
The table below describes the USB interface signals:
TIP:
The HE863 Family does NOT support host device operation at the
moment, that is, it works as a slave device.
10.1. USB transceiver specifications (TBD)
Signal
HE863
Family
Ball
Usage
USB_VBUS S8
Power supply for the internal USB transceiver.
This pin is configured as an analog input or an
analog output depending upon the type of
peripheral device connected.
USB_D- R8
Minus (-) line of the differential, bi-
directional USB signal to/from the peripheral
device
USB D+ R9
Plus (+) line of the differential, bi-
directional USB signal to/from the peripheral
device
USB_ID
(TBD)
S9
Analog input used to sense whether a peripheral
device is
connected and if connected, to determine the
peripheral type, host or slave