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AT43USB370 Datasheet(PDF) 25 Page - ATMEL Corporation

Part # AT43USB370
Description  USB 2.0 Full-Speed Host/Function Processor
PDF  50 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT43USB370 Datasheet(HTML) 25 Page - ATMEL Corporation

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AT43USB370
3340B–USB–12/03
USBP_XFRADDR_REG – Transfer Address Register
The USB processor writes in this register.
• Bit 31:0 - XFR_ADDR
Address for the data transfer.
This register is used by the USB processor to specify the start address of the memory while
issuing a request to system processor software to transfer data. After power-up or reset, this
register will contain the value of 0x00.
USBP_XFRCNT_REG – Transfer Count Register
The USB processor writes in this register.
• Bit 31:0 - XFR_CNT
Transfer count in bytes.
This register is used by the USB processor to specify the number of bytes while issuing a
request to the system processor software to transfer data. This register specifies the count to
be transferred from the location specified in the Transfer Address Register. After power-up or
reset, this register will contain the value of 0x00.
Bit
31
0
0x64
XFR_ADDR
USBP_XFRADDR_REG
Read/Write
USB Processor
W
System Processor
R
Initial Value
0x0
Mode
Host/Device
Bit
31
0
0x68
XFR_CNT
USBP_XFRCNT_REG
Read/Write
USB Processor
W
System Processor
R
Initial Value
0x0
Mode
Host/Device



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