SAM9G10 Atmel Corporation, SAM9G10 Datasheet - Page 495
SAM9G10
Manufacturer Part Number
SAM9G10
Description
Manufacturer
Atmel Corporation
Datasheets
1.SAM9261.pdf
(1274 pages)
2.SAM9261.pdf
(43 pages)
3.SAM9G10.pdf
(750 pages)
4.SAM9G10.pdf
(39 pages)
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
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Figure 31-11. Multi-buffer DMAC Transfer with Source Address Auto-reloaded and Linked List Destination Address
11053B–ATARM–22-Sep-11
11053B–ATARM–22-Sep-11
Address of
Source Layer
Note:
The DMAC Transfer flow is shown in
18. The DMAC reloads the DMAC_SADDRx register from the initial value. Hardware sets
19. The DMAC fetches the next LLI from memory location pointed to by the current
SADDR
transfer. Only DMAC_CTRLAx register is written out, because only the
DMAC_CTRLAx.BTSIZE and DMAC_CTRLAx.DONE fields have been updated by
hardware within the DMAC. The LLI.DMAC_CTRLAx.DONE bit is asserted to indicate
buffer completion Therefore, software can poll the LLI.DMAC_CTRLAx.DONE field of
the DMAC_CTRLAx register in the LLi to ascertain when a buffer transfer has
completed.
the buffer complete interrupt. The DMAC samples the row number as shown in
31-3 on page
Hardware sets the transfer complete interrupt and disables the channel. You can either
respond to the Buffer Complete or Chained buffer Transfer Complete interrupts, or poll
for the Channel Enable (DMAC_CHSR.ENABLE) bit until it is cleared by hardware, to
detect when the transfer is complete. If the DMAC is not in Row 1 as shown in
3 on page
DMAC_DSCRx register, and automatically reprograms the DMAC_DADDRx,
DMAC_CTRLAx, DMAC_CTRLBx and DMAC_DSCRx channel registers. Note that the
DMAC_SADDRx is not re-programmed as the reloaded value is used for the next
DMAC buffer transfer. If the next buffer is the last buffer of the DMAC transfer then the
DMAC_CTRLBx and DMAC_DSCRx registers just fetched from the LLI should match
Row 1 of
ure 31-11 on page
Do not poll the DMAC_CTRLAx.DONE bit in the DMAC memory map. Instead poll the
LLI.DMAC_CTRLAx.DONE bit in the LLI for that buffer. If the polled LLI.DMAC_CTRLAx.DONE bit
is asserted, then this buffer transfer has completed. This LLI.DMAC_CTRLA.DONE bit was
cleared at the start of the transfer.
Source Buffers
Table 31-3 on page
483, the following step is performed.
483. If the DMAC is in Row 1, then the DMAC transfer has completed.
495.
483. The DMAC transfer might look like that shown in
Figure 31-12 on page
DADDR(N)
DADDR(0)
DADDR(2)
DADDR(1)
Buffer1
Destination Buffers
Buffer0
Buffer2
BufferN
Destination Layer
496.
Address of
SAM9G35
SAM9G35
Table 31-
Table
Fig-
495
495
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