SAM9G20 Atmel Corporation, SAM9G20 Datasheet - Page 611

• Manufacturer Part Number: SAM9G20
• Manufacturer: Atmel Corporation

Specifications of SAM9G20

• Flash (kbytes): 0 Kbytes
• Pin Count: 217
• Max. Operating Frequency: 400 MHz
• Cpu: ARM926
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 96
• Ext Interrupts: 96
• Usb Transceiver: 3
• Usb Speed: Full Speed
• Usb Interface: Host, Device
• Spi: 2
• Twi (i2c): 1
• Uart: 7
• Ssc: 1
• Ethernet: 1
• Sd / Emmc: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: Yes
• Adc Channels: 4
• Adc Resolution (bits): 10
• Adc Speed (ksps): 95
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 32
• Self Program Memory: NO
• External Bus Interface: 1
• Dram Memory: sdram
• Nand Interface: Yes
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.8/3.3
• Operating Voltage (vcc): 0.9 to 1.1
• Fpu: No
• Mpu / Mmu: No/Yes
• Timers: 6
• Output Compare Channels: 6
• Input Capture Channels: 6
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: No

35.9.6
Name:
Access Type: Write-only
This register is write-protected while CMDRDY is 0 in MCI_SR. If an Interrupt command is sent, this register is only write-
able 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
• OPDCMD: Open Drain Command
0 = Push pull command
1 = Open drain command
6384E–ATARM–05-Feb-10
31
23
15
–
–
–
7
0
0
1
1
0
0
0
0
1
1
MCI Command Register
RSPTYP
MCI_CMDR
RSP
30
22
14
–
–
–
6
SPCMD
0
0
1
1
0
0
0
1
0
1
29
21
13
Response Type
No response.
48-bit response.
136-bit response.
Reserved.
–
–
5
0
1
0
1
0
1
MAXLAT
TRTYP
28
20
12
–
4
Command
Not a special CMD.
Initialization CMD:
74 clock cycles for initialization sequence.
Synchronized CMD:
Wait for the end of the current data block transfer before sending the
pending command.
Reserved.
Interrupt command:
Corresponds to the Interrupt Mode (CMD40).
Interrupt response:
Corresponds to the Interrupt Mode (CMD40).
OPDCMD
27
19
11
–
3
CMDNB
TRDIR
26
18
10
–
2
AT91SAM9G20
SPCMD
25
17
9
1
IOSPCMD
TRCMD
24
16
8
0
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