Siemens C541U User Manual page 112

Bit Function
INCEn Auto increment enable
If bit INCE is set, the address offset register ADROFF for CPU access to USB
memory is automatically incremented after each data write or data read action of
the USBVAL register. This allows the user to handle the USB memory like a FIFO
without modification of the address of the desired memory location by software.
After each modification of ADROFF the data value pointed to is automatically read
out of USB memory and transferred to the USBVAL register.
If INCE=0, the auto-increment function is disabled.
If INCE=1, the auto-increment function is enabled.
DBMn Dual buffer mode
Bit DBM allows the selection between single buffer mode and dual buffer mode.
If DBM=0, single buffer mode is selected.
If DBM=1, dual buffer mode is selected.
Note: For accessing the EPBCn registers SFR EPSEL(D2 H ) must be set with the appropriate
value.
Semiconductor Group
On-Chip Peripheral Components
6-67
C541U
1999-04-01