SAM9XE512 Atmel Corporation, SAM9XE512 Datasheet - Page 245

• Manufacturer Part Number: SAM9XE512
• Manufacturer: Atmel Corporation

Specifications of SAM9XE512

• Flash (kbytes): 512 Kbytes
• Pin Count: 217
• Max. Operating Frequency: 180 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): 2
• Uart: 6
• 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): 312
• 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): 1.65 to 1.95
• Fpu: No
• Mpu / Mmu: No / Yes
• Timers: 6
• Output Compare Channels: 6
• Input Capture Channels: 6
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: No

C.2
ARM DDI 0165B
Resetting the TAP controller
The boundary-scan interface includes a state machine controller called the TAP
controller. To force the TAP controller into the correct state after power-up, you must
apply a reset pulse to the DBGnTRST signal:
•
•
A clock on CLK with DBGTCKEN HIGH is not necessary to reset the device.
The action of reset is as follows:
1.
2.
System mode is selected. This means that the boundary-scan cells do not intercept
to ready the boundary-scan interface for use, drive DBGnTRST LOW, and then
HIGH again
to prevent the boundary-scan interface from being used, the DBGnTRST input
can be tied permanently LOW.
any of the signals passing between the external system and the core.
The IDCODE instruction is selected. When the TAP controller is put into the
SHIFT-DR state, and CLK is pulsed while enabled by DBGTCKEN, the
contents of the ID register are clocked out of DBGTDO.
Note
Copyright © 2000 ARM Limited. All rights reserved.
Debug in depth
C-5