Datasheet

791
SAM9M10 [DATASHEET]
6355F–ATARM–12-Mar-13
Control endpoints can generate interrupts and use only 1 bank.
All endpoints (except endpoint 0) can be configured either as Bulk, Interrupt or Isochronous. See Table 38-1.
UDPHS Endpoint Description.
The maximum packet size they can accept corresponds to the maximum endpoint size.
Note: The endpoint size of 1024 is reserved for isochronous endpoints.
The size of the DPRAM is 4 KB. The DPR is shared by all active endpoints. The memory size required by the
active endpoints must not exceed the size of the DPRAM.
SIZE_DPRAM = SIZE _EPT0
+ NB_BANK_EPT1 x SIZE_EPT1
+ NB_BANK_EPT2 x SIZE_EPT2
+ NB_BANK_EPT3 x SIZE_EPT3
+ NB_BANK_EPT4 x SIZE_EPT4
+ NB_BANK_EPT5 x SIZE_EPT5
+ NB_BANK_EPT6 x SIZE_EPT6
+... (refer to 38.6.11 UDPHS Endpoint Configuration Register)
If a user tries to configure endpoints with a size the sum of which is greater than the DPRAM, then the EPT_MAPD
is not set.
The application has access to the physical block of DPR reserved for the endpoint through a 64 KB logical address
space.
The physical block of DPR allocated for the endpoint is remapped all along the 64 KB logical address space. The
application can write a 64 KB buffer linearly.