AN2131-DK001 Cypress Semiconductor Corp, AN2131-DK001 Datasheet - Page 235

• Manufacturer Part Number: AN2131-DK001
• Description: KIT EZ-USB DEVELOPMENT BOARD
• Manufacturer: Cypress Semiconductor Corp

Specifications of AN2131-DK001

• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 428-1333

During the USB enumeration process, the host sends a device a unique 7-bit address,
which the EZ-USB core copies into this register. There is normally no reason for the CPU
to know its USB device address because the USB Core automatically responds only to its
assigned address.
Page 12-42
FNADDR
Note
During ReNumeration
respond to the default address 0.
b7
R
0
x
FA6
b6
R
x
the USB Core sets register to 0 to allow the EZ-USB chip to
FA5
b5
R
x
Figure 12-34. Function Address Register
Chapter 12. EZ-USB Registers
Function Address
FA4
b4
R
x
FA3
b3
R
x
FA2
b2
R
x
FA1
b1
R
x
EZ-USB TRM v1.9
FA0
7FDB
b0
R
x