Telit Wireless Solutions UC864 manual USB Port, Communication ports combinations

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

USB	Signal	UC864-E	Usage
Pin No.		Pad No.
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

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).

9.1Communication 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)

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