STR720 datasheet(289/401 Pages) STMICROELECTRONICS

Part #	STR720

Description	ARM720T 16/32-BIT MCU WITH 16K RAM, USB, CAN, 3 TIMERS, ADC, 6 COMMUNICATIONS INTERFACES

PDF	401 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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289 / 401 page

STR720 - USB SLAVE INTERFACE (USB)

289/401

USB Device Address (USB_DADDR)

Address Offset: 4Ch

Reset Value: 0000 0000 0000 0000 (0000h)

This register is also reset when a USB reset is received from the USB bus or forced through

bit FRES in the USB_CNTR register.

Reserved

ADD[6:0]

Bits 15:8

Reserved

These are reserved bits. These bits are always read as ‘0’ and must

always be written with ‘0’.

Bit 7

EF: Enable Function

This bit is set by the software to enable the USB device. The address of

this device is contained in the following ADD[6:0] bits. If this bit is at ‘0’ no

transactions are handled, irrespective of the settings of USB_EPnR

registers.

Bits 6:0

ADD[6:0]: Device Address

These bits contain the USB function address assigned by the host PC

during the enumeration process. Both this field and the Endpoint Address

(EA) field in the associated USB_EPnR register must match with the

information contained in a USB token in order to handle a transaction to

the required endpoint.

STR720 Datasheet(PDF) 289 Page - STMicroelectronics