Atmel AVR XMEGA AU series User Manual

259
8331B–AVR–03/12
Atmel AVR XMEGA AU
• Bit 15:0 - DPTR[15:8]: Endpoint Data Pointer High
This byte contains the eight msbs of the endpoint data pointer (DATAPTR).
20.14.7 AUXDATAL – Auxiliary Data Low
The AUXDATAL and AUXDATAH registers represent the 16-bit value, AUXDATA, that is used
for multipacket transfers.
For IN endpoints, AUXDATA holds the total number of bytes sent. AUXDATA should be written
to zero when setting up a new transfer. For OUT endpoints, AUXDATA holds the total data size
for the complete transfer. This value must be a multiple of the maximum packet size, except for
ISO 1023-byte endpoints.
See ”Multipacket Transfers” on page 243 for more details on setting up and using multipacket
transfers.
• Bit 7:0 – AUXDATA[7:0]: Auxiliary Data Low
This byte contains the eight lsbs of the auxiliary data (AUXDATA). When multipacket transfer is
not used, this SRAM location is free to use for other application data.
20.14.8 AUXDATAH – Auxiliary Data High
• Bit 7:0 – AUXDATA[15:8]: Auxiliary Data High
This byte contains the eight msbs of the auxiliary data (AUXDATA). When multipacket transfer is
not used, this SRAM location is free to use for other application data.
Bit 76543210
+0x06 AUXDATA[7:0] AUXDATAL
Read/Write R/W R/W R/W R/W R/W R/W R/W R/W
Initial ValueXXXXXXXX
Bit 76543210
+0x07 AUXDATA[15:8] AUXDATAH
Read/Write R/W R/W R/W R/W R/W R/W R/W R/W
Initial ValueXXXXXXXX

Atmel AVR XMEGA AU series Specifications

General

Brand	Atmel
Model	AVR XMEGA AU series
Category	Microcontrollers
Language	English