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AT90USB646 Datasheet(PDF) 295 Page - ATMEL Corporation

Part # AT90USB646
Description  8-bit Atmel Microcontroller with 64/128Kbytes of ISP Flash and USB Controller
PDF  456 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT90USB646 Datasheet(HTML) 295 Page - ATMEL Corporation

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295
7593L–AVR–09/12
AT90USB64/128
• 7-4 - Reserved
The value read from these bits is always 0. Do not set these bits.
• 3-0 - FNUM10:8 - Frame Number
The value contained in this register is the current SOF number.
This value can be modified by software.
• 7-0 - FNUM7:0 - Frame Number
The value contained in this register is the current SOF number.
This value can be modified by software.
• 7-0 - FLEN7:0 - Frame Length
The value contained the data frame length transmited.
24.16.2
USB Host Pipe registers
• 7-3 - Reserved
The value read from these bits is always 0. Do not set these bits.
• 2-0 - PNUM2:0 - Pipe Number
Select the pipe using this register. The USB Host registers ended by a X correspond then to this
number.
This number is used for the USB controller following the value of the PNUMD bit.
Bit
7
65
43
2
1
0
-
-
-
-
-
FNUM10
FNUM9
FNUM8
UHFNUMH
Read/write
RR
RR
R
R
R
R
Initial value
00
00
0
0
0
0
Bit
7
65
43
21
0
FNUM7
FNUM6
FNUM5
FNUM4
FNUM3
FNUM2
FNUM1
FNUM0
UHFNUML
Read/write
RR
RR
RR
RR
Initial value
00
00
00
00
Bit
7
65432
10
FLEN7
FLEN6
FLEN5
FLEN4
FLEN3
FLEN2
FLEN1
FLEN0
UHFLEN
Read/write
RR
RRRRRR
Initial value
0
00000
00
Bit
76543
2
1
0
PNUM2
PNUM1
PNUM0
UPNUM
Read/write
RW
RW
RW
Initial value
00000
0
0
0



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