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AT43USB355M-AC Datasheet(PDF) 84 Page - ATMEL Corporation

Part # AT43USB355M-AC
Description  Full-speed USB Microcontroller with Embedded Hub, ADC and PWM
PDF  115 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT43USB355M-AC Datasheet(HTML) 84 Page - ATMEL Corporation

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84
AT43USB355
2603G–USB–04/06
Hub End-point 0 Data Register – HDR0
Function End-point 0..3 Data Register – FDR0..3
This register is used to read data from or to write data to the Hub End-point 0 FIFO.
• Bit 7..0 – FDAT7..0: FIFO Data
Hub end-point 1 has a single byte data register instead of a FIFO. This data register contains
the hub and port status change bitmap. This data register is automatically updated by the USB
hardware and is not accessible by the firmware. The bits in this register when read by the host
will be:
• Bit 7...4 – Reserved
These bits are reserved in the AT43USB355 and will read as zero.
• Bit 3 – P3 SC: Port 3 Status Change
• Bit 2 – P2 SC: Port 2 Status Change
• Bit 1 – P1 SC: Port 1 Status Change
• Bit 0 – H SC: Hub Status Change
Bit
7
6
5
4
3
2
1
0
$1FD7
DATA7
DATA6
DATA5
DATA4
DATA3
DATA2
DATA1
DATA0
HDR0
$1FD5
DATA7
DATA6
DATA5
DATA4
DATA3
DATA2
DATA1
DATA0
FDR0
$1FD4
DATA7
DATA6
DATA5
DATA4
DATA3
DATA2
DATA1
DATA0
FDR1
$1FD3
DATA7
DATA6
DATA5
DATA4
DATA3
DATA2
DATA1
DATA0
FDR2
$1FD2
DATA7
DATA6
DATA5
DATA4
DATA3
DATA2
DATA1
DATA0
FDR3
Read/Write
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Initial Value
0
0
0
0
0
0
0
0
Bit
7
6
5
4
3
2
1
0
$
–
–
–
–
P3 SC
P2 SC
P1 SC
H SC
HDR1
Read/Write
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Initial Value
0
0
0
0
0
0
0
0



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