SAM9G20 Atmel Corporation, SAM9G20 Datasheet - Page 592

• 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

35.5.3
35.6
592
Bus Topology
AT91SAM9G20
Interrupt
The MCI interface has an interrupt line connected to the Advanced Interrupt Controller (AIC).
Handling the MCI interrupt requires programming the AIC before configuring the MCI.
Figure 35-3. Multimedia Memory Card Bus Topology
The MultiMedia Card communication is based on a 7-pin serial bus interface. It has three com-
munication lines and four supply lines.
Table 35-2.
Notes:
Figure 35-4. MMC Bus Connections (One Slot)
Note:
Pin
Number
1
2
3
4
5
6
7
1. I: Input, O: Output, PP: Push/Pull, OD: Open Drain.
2. When several MCI (x MCI) are embedded in a product, MCCK refers to MCIx_CK, MCCDA to
When several MCI (x MCI) are embedded in a product, MCCK refers to MCIx_CK, MCCDA to
MCIx_CDA MCDAy to MCIx_DAy.
MCIx_CDA, MCCDB to MCIx_CDB, MCDAy to MCIx_DAy, MCDBy to MCIx_DBy.
Bus Topology
MCI
MCCDA
MCCK
MCDA0
Name
RSV
CMD
VSS1
VDD
CLK
VSS2
DAT[0]
Type
NC
I/O/PP/OD
S
S
I/O
S
I/O/PP
1
2 3 4 5 6
MMC1
(1)
1
2 3 4 5 6
MMC
7
Description
Not connected
Command/response
Supply voltage ground
Supply voltage
Clock
Supply voltage ground
Data 0
7
1
2 3 4 5 6
MMC2
7
1
2 3 4 5 6
MMC3
6384E–ATARM–05-Feb-10
MCI Pin Name
(Slot z)
-
MCCDz
VSS
VDD
MCCK
VSS
MCDz0
7
(2)