STR720 datasheet(290/401 Pages) STMICROELECTRONICS

部件名	STR720

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

PDF	401 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

标志

290 / 401 page

STR720 - USB SLAVE INTERFACE (USB)

290/401

Buffer Table Address (USB_BTABLE)

Address Offset: 50h

Reset Value: 0000 0000 0000 0000 (0000h)

76543

BTABLE[15:3]

Reserved

Bits 15:3

BTABLE[15:3]: Buffer Table.

These bits contain the start address of the buffer allocation table inside the

dedicated packet memory. This table describes each endpoint buffer

location and size and it must be aligned to an 8 byte boundary (the 3 least

significant bits are always ‘0’). At the beginning of every transaction

addressed to this device, the USP peripheral reads the element of this

table related to the addressed endpoint, to get its buffer start location and

the buffer size (Refer to Section “Structure and Usage of Packet Buffers”).

Bits 2:0

Reserved.

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

always be written with ‘0’.

STR720 数据表(PDF) 290 Page - STMicroelectronics