Datasheet

703
SAM9M10 [DATASHEET]
6355F–ATARM–12-Mar-13
35.13.6 HSMCI Command Register
Name: HSMCI_CMDR
Addresses: 0xFFF80014 (0), 0xFFFD0014 (1)
Access: Write-only
This register is write-protected while CMDRDY is 0 in HSMCI_SR. If an Interrupt command is sent, this register is only
writeable by an interrupt response (field SPCMD). This means that the current command execution cannot be interrupted
or modified.
• CMDNB: Command Number
• RSPTYP: Response Type
• SPCMD: Special Command
31 30 29 28 27 26 25 24
––––BOOT_ACKATACS IOSPCMD
23 22 21 20 19 18 17 16
– – TRTYP TRDIR TRCMD
15 14 13 12 11 10 9 8
– – – MAXLAT OPDCMD SPCMD
76543210
RSPTYP CMDNB
RSP Response Type
0 0 No response.
0 1 48-bit response.
1 0 136-bit response.
1 1 R1b response type
SPCMD Command
0 0 0 Not a special CMD.
001
Initialization CMD:
74 clock cycles for initialization sequence.
010
Synchronized CMD:
Wait for the end of the current data block transfer before sending the
pending command.
011
CE-ATA Completion Signal disable Command.
The host cancels the ability for the device to return a command
completion signal on the command line.
100
Interrupt command:
Corresponds to the Interrupt Mode (CMD40).