SAM9M10_14 Datasheet, PDF (802/1385 Pages) ATMEL Corporation – Atmel | SMART ARM-based Embedded MPU

37. USB High Speed Device Port (UDPHS)
37.1
Description
The USB High Speed Device Port (UDPHS) is compliant with the Universal Serial Bus (USB), rev 2.0 High Speed
device specification.
Each endpoint can be configured in one of several USB transfer types. It can be associated with one, two or three
banks of a dual-port RAM used to store the current data payload. If two or three banks are used, one DPR bank is
read or written by the processor, while the other is read or written by the USB device peripheral. This feature is
mandatory for isochronous endpoints.
37.2
Embedded Characteristics
The SAM9M10 features USB communication ports as follows:
 2 Ports USB Host full speed OHCI and High speed EHCI
 1 Device High speed
USB Host Port A is directly connected to the first UTMI transceiver.
The Host Port B is multiplexed with the USB device High speed and connected to the second UTMI port. The
selection between Host Port B and USB device high speed is controlled by a the UDPHS enable bit located in the
UDPHS_CTRL control register.
Figure 37-1. USB Selection
HS
Transceiver
HS
Transceiver
EN_UDPHS
0
1
PA
PB
HS EHCI
FS OHCI
DMA
HS
USB
DMA
 USB V2.0 high-speed compliant, 480 MBits per second
 Embedded USB V2.0 UTMI+ high-speed transceiver shared with UHP HS.
 Embedded 4-KByte dual-port RAM for endpoints
 Embedded 6 channels DMA controller
 Suspend/Resume logic
 Up to 2 or 3 banks for isochronous and bulk endpoints
 Seven endpoints:
̶ Endpoint 0: 64 bytes, 1 bank mode
̶ Endpoint 1 & 2: 1024 bytes, 2 banks mode, High Bandwidth, DMA
̶ Endpoint 3 & 4: 1024 bytes, 3 banks mode, DMA
̶ Endpoint 5 & 6: 1024 bytes, 3 banks mode, High Bandwidth, DMA
802
SAM9M10 [DATASHEET]
Atmel-6355G-ATARM-SAM9M10-Datasheet_02-Sept-14