ATSAM3U-EK Atmel, ATSAM3U-EK Datasheet - Page 1009

Manufacturer Part Number

KIT EVAL FOR AT91SAM3U CORTEX

Manufacturer

Processor To Be Evaluated

Data Bus Width

Interface Type

Operating Supply Voltage

Silicon Manufacturer

Core Architecture

Core Sub-architecture

Silicon Core Number

Silicon Family Name

Kit Contents

Board CD Docs

Rohs Compliant

For Use With/related Products

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Manufacturer

Part Number:

Manufacturer:

• BUFF_LENGTH: Buffer Byte Length (Write-only)

This field determines the number of bytes to be transferred until end of buffer. The maximum channel transfer size

(64 KBytes) is reached when this field is 0 (default value). If the transfer size is unknown, this field should be set to 0, but

the transfer end may occur earlier under UDPHS device control.

When this field is written, The UDPHS_DMASTATUSx register BUFF_COUNT field is updated with the write value.

6430D–ATARM–25-Mar-11

1. Bits [31:2] are only writable when issuing a channel Control Command other than “Stop Now”.

2. For reliability it is highly recommended to wait for both UDPHS_DMASTATUSx register CHAN_ACT and CHAN_ENB flags

are at 0, thus ensuring the channel has been stopped before issuing a command other than “Stop Now”.

SAM3U Series