Datasheet

949
SAM3X / SAM3A [DATASHEET]
Atmel-11057C-ATARM-SAM3X-SAM3A-Datasheet_23-Mar-15
• OPDCMD: Open Drain Command
0 (PUSHPULL) = Push pull command.
1 (OPENDRAIN) = Open drain command.
• MAXLAT: Max Latency for Command to Response
0 (5) = 5-cycle max latency.
1 (64) = 64-cycle max latency.
• TRCMD: Transfer Command
• TRDIR: Transfer Direction
0 (WRITE) = Write.
1 (READ) = Read.
• TRTYP: Transfer Type
• IOSPCMD: SDIO Special Command
• ATACS: ATA with Command Completion Signal
0 (NORMAL) = Normal operation mode.
1 (COMPLETION) = This bit indicates that a completion signal is expected within a programmed amount of time
(HSMCI_CSTOR).
• BOOT_ACK: Boot Operation Acknowledge.
The master can choose to receive the boot acknowledge from the slave when a Boot Request command is issued. When
set to one this field indicates that a Boot acknowledge is expected within a programmable amount of time defined with
DTOMUL and DTOCYC fields located in the HSMCI_DTOR register. If the acknowledge pattern is not received then an
acknowledge timeout error is raised. If the acknowledge pattern is corrupted then an acknowledge pattern error is set.
Value Name Description
0 NO_DATA No data transfer
1 START_DATA Start data transfer
2 STOP_DATA Stop data transfer
3–Reserved
Value Name Description
0 SINGLE MMC/SDCard Single Block
1 MULTIPLE MMC/SDCard Multiple Block
2 STREAM MMC Stream
4 BYTE SDIO Byte
5 BLOCK SDIO Block
Value Name Description
0 STD Not an SDIO Special Command
1 SUSPEND SDIO Suspend Command
2 RESUME SDIO Resume Command