User's Guide

UC864-E-AUTO / AWS-AUTO Hardware User Guide
1vv0300795 Rev.11 – 2010/11/18
Reproduction forbidden without Telit Communications S.p.A’s. written authorization - All Rights Reserved. Page 38 of 78
9. USB Port
USB PortUSB Port
USB Port
UC864-E-AUTO / AWS-AUTO includes an integrated universal serial bus (USB)
transceiver, compatible with USB 2.0 specifications and supporting the USB Full-
Speed (12 Mb/s) mode. In HSDPA (High Speed downlink Packet Access) mode, the
downlink data speed rates up to 7.2Mbps. Hence OEMs need to interface UC864-E-
AUTO / AWS-AUTO to applications in full-speed (12Mbits/s) mode.
This is the main communication port suggested for the OEM application.
Signal
SignalSignal
Signal
UC864
UC864UC864
UC864-
--
-E
EE
E-
--
-AUTO
AUTOAUTO
AUTO
/ AWS
/ AWS/ AWS
/ AWS-
--
-AUTO
AUTOAUTO
AUTO
Pad No.
Pad No.Pad No.
Pad No.
Usage
UsageUsage
Usage
USB_VBUS 48
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- 80
Minus (-) line of the differential, bi-directional USB signal to/from the
peripheral device
USB D+ 79
Plus (+) line of the differential, bi-directional USB signal to/from the
peripheral device
USB_ID
(for future use)
35
Analog input used to sense whether a peripheral device is
connected and if connected, to determine the peripheral type, host or
slave
NOTE:
NOTE:NOTE:
NOTE:
UC864-E-AUTO / AWS-AUTO
does NOT support host device operation at the moment,
that is, it works as a slave device. Consequently USB_ID must be opened (not
connected).