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UPSD3422EB40U6 Fiches technique(PDF) 158 Page - STMicroelectronics

No de pièce UPSD3422EB40U6
Description  Turbo Plus Series Fast Turbo 8032 MCU with USB and Programmable Logic
PDF  293 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

UPSD3422EB40U6 Fiches technique(HTML) 158 Page - STMicroelectronics

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USB interface
uPSD34xx
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USB IN FIFO NAK Interrupt Enable Register (UIE3)
When an endpoint’s IN FIFO is empty and an IN transaction to that endpoint has been
received, the SIE sends a NAK handshake token since there is no data ready for it to
send.
The UIE3 register (see Table 75) is used to enable each endpoint’s IN FIFO NAK
Interrupt.
Table 75.
USB IN FIFO NAK interrupt enable register (UIE3 0E7h, reset value 00h)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
–
–
–
NAK4IE
NAK3IE
NAK2IE
NAK1IE
NAK0IE
Bit
Symbol
R/W
Definition
7
–
–
Reserved
6
–
–
Reserved
5
–
–
Reserved
4
NAK4IE
R/W
Enable Endpoint 4 IN FIFO NAK interrupt
3
NAK3IE
R/W
Enable Endpoint 3 IN FIFO NAK interrupt
2
NAK2IE
R/W
Enable Endpoint 2 IN FIFO NAK interrupt
1
NAK1IE
R/W
Enable Endpoint 1 IN FIFO NAK interrupt
0
NAK0IE
R/W
Enable Endpoint 0 IN FIFO NAK interrupt



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