SAM9260 Atmel Corporation, SAM9260 Datasheet - Page 241
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SAM9260
Manufacturer Part Number
SAM9260
Description
Manufacturer
Atmel Corporation
Datasheets
1.M40800.pdf
(284 pages)
2.M40800.pdf
(153 pages)
3.SAM9260.pdf
(290 pages)
4.SAM9260.pdf
(802 pages)
5.SAM9260.pdf
(47 pages)
Specifications of SAM9260
Flash (kbytes)
0 Kbytes
Pin Count
217
Max. Operating Frequency
210 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)
312
Resistive Touch Screen
No
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
8
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
Fpu
No
Mpu / Mmu
No / Yes
Timers
6
Output Compare Channels
6
Input Capture Channels
6
32khz Rtc
Yes
Calibrated Rc Oscillator
No
- M40800 PDF datasheet
- M40800 PDF datasheet #2
- SAM9260 PDF datasheet #3
- SAM9260 PDF datasheet #4
- SAM9260 PDF datasheet #5
- Current page: 241 of 284
- Download datasheet (2Mb)
B.7.2
ARM DDI 0029G
Clock switch during test
2.
3.
Refer to Exit from debug state on page B-26.
When under serial test conditions, that is when test patterns are being applied to the
ARM7TM core through the JTAG interface, the ARM7TDMI core must be clocked
using DCLK. Entry into test is less automatic than debug and some care must be taken.
On the way into test, MCLK must be held LOW. The TAP controller can now be used
to serially test the ARM7TDMI core. If scan chain 0 and INTEST are selected, DCLK
is generated while the state machine is in the RUN-TEST-IDLE state. During EXTEST,
DCLK is not generated.
On exit from test, RESTART must be selected as the TAP controller instruction. When
this is done, MCLK can be enabled to resume.
After INTEST testing, care must be taken to ensure that the core is in a sensible state
before switching back. The safest way to do this is to either select RESTART and then
cause a system reset, or to insert
switching back.
At this point, RESTART must be clocked into the TAP instruction register.
The ARM7TDMI core now automatically resynchronizes back to MCLK and
starts fetching instructions from memory at MCLK speed.
Note
Copyright © 1994-2001. All rights reserved.
into the instruction pipeline before
Debug in Depth
B-23
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