Network Hardware User Manual

UC864-E Hardware User Guide

1vv0300766a Rev.1 - 31/01/08

9 USB Port

UC864-E includes an integrated universal serial bus (USB) transceiver, compliant with USB 2.0

specification, for interfacing UC864-E to a computer as a USB peripheral or connecting the UC864-E

to other peripherals. It supports the USB low-speed (1.5 Mbits/s) and full-speed (12 Mb/s) modes. In

HSDPA (High Speed download Packet Access) mode, the downlink data speed rates up to 7.2Mbps.

Hence you need to interface UC864-E to your applications in full-speed (12Mbits/s) mode.

You can use USB for the following purposes: communication with external peripheral devices, debug

monitor

NOTE: the UC864-E is turned fully on also by connecting the module’s USB port as slave (considering

also the presence of VBATT supply).

9.1 Communication ports combinations

The following port combinations are available on the UC864-E module:

• UART (AT command) +USB (DATA/TRACE)

• USB (AT command) + USB (DATA/TRACE)

USB

Pin No.

Signal UC864-E

Pad No.

Usage

1 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.

2 USB_D- 80 Minus (-) line of the differential, bi-directional USB signal to/from

the peripheral device

3 USB D+ 79 Plus (+) line of the differential, bi-directional USB signal to/from

the peripheral device

4 USB_ID 35 Analog input used to sense whether a peripheral device is

connected, and determine the peripheral type, a host or a slave