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AT43USB351M Datasheet(PDF) 33 Page - ATMEL Corporation

Part # AT43USB351M
Description  Full-speed/Low-speed USB Microcontroller with ADC and PWM
PDF  101 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT43USB351M Datasheet(HTML) 33 Page - ATMEL Corporation

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AT43USB351M
3302E–USB–7/04
USB Interrupt Acknowledge Register – UIAR
• Bit 7 – SOF INTACK: Start of Frame Interrupt Acknowledge
The microcontroller firmware writes a 1 to this bit to clear the SOF INT bit.
• Bit 6, 5 – Res: Reserved bit
These bits are reserved and are always read as zero.
• Bit 4 – FEP4 INTACK: Function Endpoint 4 Interrupt Acknowledge
The microcontroller firmware writes a 1 to this bit to clear the FEP4 INT bit.
• Bit 3 – FEP3 INTACK: Function Endpoint 3 Interrupt Acknowledge
The microcontroller firmware writes a 1 to this bit to clear the FEP3 INT bit.
• Bit 2 – FEP2 INTACK: Function Endpoint 2 Interrupt Acknowledge
The microcontroller firmware writes a 1 to this bit to clear the FEP2 bit.
• Bit 1 – FEP1 INTACK: Function Endpoint 1 Interrupt Acknowledge
The microcontroller firmware writes a 1 to this bit to clear the FEP1 bit.
• Bit 0 – FEP0 INTACK: Function Endpoint 0 Interrupt Acknowledge
The microcontroller firmware writes a 1 to this bit to clear the FEP0 INT bit.
Bit
7
6
5
4
3
2
1
0
$1FF5
SOF INTACK
–
–
FEP4 INTACK
FEP3 INTACK
FEP2 IMSK
FEP1 INTACK
FEP0 INTACK
UIAR
Read/Write
W
R
R
W
W
W
W
W
Initial Value
0
0
0
0
0
0
0
0



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