SAM9G10 Atmel Corporation, SAM9G10 Datasheet - Page 733

• Manufacturer Part Number: SAM9G10
• Manufacturer: Atmel Corporation

Specifications of SAM9G10

• Flash (kbytes): 0 Kbytes
• Pin Count: 217
• Max. Operating Frequency: 266 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: 4
• Ssc: 3
• Sd / Emmc: 1
• Graphic Lcd: Yes
• Video Decoder: No
• Camera Interface: No
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 16
• 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): 1.08 to 1.32
• Fpu: No
• Mpu / Mmu: No/Yes
• Timers: 3
• Output Compare Channels: 3
• Input Capture Channels: 3
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: No

42.2.8
42.2.8.1
6462B–ATARM–6-Sep-11
Shutdown Controller (SHDWC)
SHDWC: Boundary Scan Mode Outputs the 32 kHz clock
In boundary scan mode, the SHDN pin outputs the 32 kHz clock.
There is only one way to disable the 32 kHz clock on the SHDN pin.
• The assembler routine:
}
AREA TEST, CODE
soft_user_reset
;disable IRQs
;change refresh rate to block all data accesses
;prepare power down command
;prepare proc_reset and periph_reset
;perform power down command
;perform proc_reset and periph_reset (in the ARM pipeline)
END
Problem Fix/Workaround
if( (*AT91C_RSTC_RSR & AT91C_RSTC_URSTS ) == AT91C_RSTC_URSTS){
soft_user_reset();
//never reached
while(1);
}
INCLUDEAT91SAM9xxx.inc
EXPORTsoft_user_reset
MRS r0, CPSR
ORR r0, r0, #0x80
MSR CPSR_c, r0
LDR r0, =AT91C_SDRAMC_TR
LDR r1, =1
STR r1, [r0]
LDR r0, =AT91C_SDRAMC_LPR
LDR r1, =2
LDR r2, =AT91C_RSTC_RCR
LDR r3, =0xA5000005
STR r1, [r0]
STR r3, [r2]
SAM9G10
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