SAM9263 Atmel Corporation, SAM9263 Datasheet - Page 109
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SAM9263
Manufacturer Part Number
SAM9263
Description
Manufacturer
Atmel Corporation
Datasheets
1.M40800.pdf
(284 pages)
2.M40800.pdf
(153 pages)
3.SAM9260.pdf
(290 pages)
4.SAM9261.pdf
(248 pages)
5.SAM9263.pdf
(1109 pages)
6.SAM9263.pdf
(51 pages)
Specifications of SAM9263
Flash (kbytes)
0 Kbytes
Pin Count
324
Max. Operating Frequency
240 MHz
Cpu
ARM926
Hardware Qtouch Acquisition
No
Max I/o Pins
160
Ext Interrupts
160
Usb Transceiver
3
Usb Speed
Full Speed
Usb Interface
Host, Device
Spi
2
Twi (i2c)
1
Uart
4
Can
1
Ssc
2
Ethernet
1
Sd / Emmc
2
Graphic Lcd
Yes
Video Decoder
No
Camera Interface
Yes
Resistive Touch Screen
No
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
96
Self Program Memory
NO
External Bus Interface
2
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
3
Output Compare Channels
3
Input Capture Channels
3
Pwm Channels
4
32khz Rtc
Yes
Calibrated Rc Oscillator
No
- M40800 PDF datasheet
- M40800 PDF datasheet #2
- SAM9260 PDF datasheet #3
- SAM9261 PDF datasheet #4
- SAM9263 PDF datasheet #5
- SAM9263 PDF datasheet #6
- Current page: 109 of 284
- Download datasheet (2Mb)
4.3
ARM DDI 0029G
Pipeline following signals
Every coprocessor in the system must contain a pipeline follower to track the
instructions in the ARM7TDMI processor pipeline. The coprocessors connect to the
configured ARM7TDMI core input data bus, D[31:0] or DIN[31:0], over which
instructions are fetched, and to MCLK and nWAIT.
It is essential that the two pipelines remain in step at all times. When designing a
pipeline follower for a coprocessor, the following rules must be observed:
•
•
•
•
Any instructions that are flushed from the ARM7TDMI processor pipeline:
•
•
There are no coprocessor instructions in the Thumb instruction set, and so coprocessors
must monitor the state of the TBIT signal to ensure that they do not decode pairs of
Thumb instructions as ARM instructions.
At reset, with nRESET LOW, the pipeline must either be marked as invalid, or
filled with instructions that do not decode to valid instructions for that
coprocessor.
The coprocessor state must only change when nWAIT is HIGH, except during
reset.
An instruction must be loaded into the pipeline on the falling edge of MCLK, and
only when nOPC, nMREQ, and TBIT were all LOW in the previous bus cycle.
These conditions indicate that this cycle is an ARM instruction fetch, so the new
opcode must be read into the pipeline.
The pipeline must be advanced on the falling edge of MCLK when nOPC,
nMREQ and TBIT are all LOW in the current bus cycle.
These conditions indicate that the current instruction is about to complete
execution, because the first action of any instruction performing an instruction
fetch is to refill the pipeline.
never signal on nCPI that they have entered execute
are automatically replaced in the coprocessor pipeline follower by the prefetches
required to refill the core pipeline.
Copyright © 1994-2001. All rights reserved.
Coprocessor Interface
4-5
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