SAM9G46 Atmel Corporation, SAM9G46 Datasheet - Page 484
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SAM9G46
Manufacturer Part Number
SAM9G46
Description
Manufacturer
Atmel Corporation
Datasheets
1.SAM9261.pdf
(248 pages)
2.SAM9261.pdf
(1274 pages)
3.SAM9261.pdf
(43 pages)
4.SAM9G46.pdf
(58 pages)
Specifications of SAM9G46
Flash (kbytes)
0 Kbytes
Pin Count
324
Max. Operating Frequency
400 MHz
Cpu
ARM926
Hardware Qtouch Acquisition
No
Max I/o Pins
160
Ext Interrupts
160
Usb Transceiver
3
Usb Speed
Hi-Speed
Usb Interface
Host, Device
Spi
2
Twi (i2c)
2
Uart
5
Lin
4
Ssc
2
Ethernet
1
Sd / Emmc
2
Graphic Lcd
Yes
Video Decoder
No
Camera Interface
Yes
Adc Channels
8
Adc Resolution (bits)
10
Adc Speed (ksps)
440
Resistive Touch Screen
Yes
Temp. Sensor
No
Crypto Engine
AES/DES
Sram (kbytes)
64
Self Program Memory
NO
External Bus Interface
2
Dram Memory
DDR2/LPDDR, SDRAM/LPSDR
Nand Interface
Yes
Picopower
No
Temp. Range (deg C)
-40 to 85
I/o Supply Class
1.8/3.3
Operating Voltage (vcc)
0.9 to 1.1
Fpu
No
Mpu / Mmu
No/Yes
Timers
6
Output Compare Channels
6
Input Capture Channels
6
Pwm Channels
4
32khz Rtc
Yes
Calibrated Rc Oscillator
No
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31.4.4.3
484
484
Suspension of Transfers Between buffers
SAM9G35
SAM9G35
Ending Multi-buffer Transfers
b u f f e r s i s a f u n c t i o n o f D M A C _ C T R L A x . S R C _ D S C R , D M A C _ C F G x . S R C _ R E P ,
DMAC_CTRLAx.DST_DSCR and DMAC_CFGx.DST_REP registers.
At the end of every buffer transfer, an end of buffer interrupt is asserted if:
Note:
At the end of a chain of multiple buffers, an end of linked list interrupt is asserted if:
All multi-buffer transfers must end as shown in Row 1 of
every buffer transfer, the DMAC samples the row number, and if the DMAC is in Row 1 state,
then the previous buffer transferred was the last buffer and the DMAC transfer is terminated.
F o r r o w s 9 , 1 0 a n d 1 1 o f
DMAC_CTRLBx.AUTO is set), multi-buffer DMAC transfers continue until the automatic mode is
disabled by writing a ‘1’ in DMAC_CTRLBx.AUTO bit. This bit should be programmed to zero in
the end of buffer interrupt service routine that services the next-to-last buffer transfer. This puts
the DMAC into Row 1 state.
For rows 2, 3, 4, 5, and 6 (DMAC_CRTLBx.AUTO cleared) the user must setup the last buffer
d e s c r i p t o r i n m e m o r y s u c h t h a t b o t h L L I . D M A C _ C T R L B x . S R C _ D S C R a n d
LLI.DMAC_CTRLBx.DST_DSCR are one and LLI.DMAC_DSCRx is set to 0.
• the channel buffer interrupt is unmasked, DMAC_EBCIMR.BTC[n] = ‘1’, where n is the
• the channel end of chained buffer interrupt is unmasked, DMAC_EBCIMR.CBTC[n] = ‘1’,
channel number.
when n is the channel number.
The buffer complete interrupt is generated at the completion of the buffer transfer to the
destination.
T a b l e 3 1 - 3 o n p a g e 4 8 3
Table 31-3 on page
, ( D M A C _ D S C R x = 0 a n d
11053B–ATARM–22-Sep-11
11053B–ATARM–22-Sep-11
483. At the end of
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