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STR720 Datasheet(PDF) 290 Page - STMicroelectronics

Part # STR720
Description  ARM720T 16/32-BIT MCU WITH 16K RAM, USB, CAN, 3 TIMERS, ADC, 6 COMMUNICATIONS INTERFACES
PDF  401 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STR720 Datasheet(HTML) 290 Page - STMicroelectronics

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STR720 - USB SLAVE INTERFACE (USB)
290/401
Buffer Table Address (USB_BTABLE)
Address Offset: 50h
Reset Value: 0000 0000 0000 0000 (0000h)
15
14
13
12
11
10
98
76543
21
0
BTABLE[15:3]
Reserved
rw
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’.
1



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