USB-100 Fujitsu Semiconductor America Inc, USB-100 Datasheet - Page 83
USB-100
Manufacturer Part Number
USB-100
Description
KIT STARTER FOR USB
Manufacturer
Fujitsu Semiconductor America Inc
Type
MCUr
Datasheet
1.USB-100.pdf
(143 pages)
Specifications of USB-100
Contents
Board, Cable
For Use With/related Products
MB91F662
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
865-1108
- Current page: 83 of 143
- Download datasheet (7Mb)
5.3.2
USB initialization process
The figure below shows the details of the USB initialization process.
Start
USB operation enabled (USBEN=1)
Bus reset (RST=1)
USB register initial settings
- Bus power supply (PWC=0)
- EP0 setting (64 bytes)
- EP1 setting (INT-IN transfer/ 64 bytes)
Release bus reset (RST=0)
Clear EP0/EP1 receive buffer
Set V-BUS detection pin (PH3)
No
V-BUS detected?
Yes
Connect to HOST (HCONX = 0)
Enable USB Function interrupt
End
Figure 5.3.2-1 Operating flow of the USB initialization process (usb_mouse_ctrl.c)
82
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