AT91SAM9G45-CU-999 Atmel, AT91SAM9G45-CU-999 Datasheet - Page 1001
AT91SAM9G45-CU-999
Manufacturer Part Number
AT91SAM9G45-CU-999
Description
IC MCU ARM9 APMC 324TFBGA
Manufacturer
Atmel
Series
AT91SAMr
Datasheet
1.AT91SAM9G45-EKES.pdf
(1218 pages)
Specifications of AT91SAM9G45-CU-999
Core Processor
ARM9
Core Size
16/32-Bit
Speed
400MHz
Connectivity
EBI/EMI, Ethernet, I²C, IrDA, MMC, SPI, SSC, UART/USART, USB
Peripherals
AC'97, DMA, I²S, LCD, POR, PWM, WDT
Number Of I /o
160
Program Memory Size
64KB (64K x 8)
Program Memory Type
ROM
Ram Size
128K x 8
Voltage - Supply (vcc/vdd)
0.9 V ~ 1.1 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
324-TFBGA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
Supplier Unconfirmed
Available stocks
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Part Number
Manufacturer
Quantity
Price
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Figure 41-16. DMAC Transfer Flow for Linked List Source Address and Contiguous Destination Address
41.4.6
6438F–ATARM–21-Jun-10
Disabling a Channel Prior to Transfer Completion
Under normal operation, software enables a channel by writing a ‘1’ to the Channel Handler
Enable Register, DMAC_CHER.ENABLE[n], and hardware disables a channel on transfer com-
pletion by clearing the DMAC_CHSR.ENABLE[n] register bit.
The recommended way for software to disable a channel without losing data is to use the SUS-
PEND[n] bit in conjunction with the EMPTY[n] bit in the Channel Handler Status Register.
Buffer Complete interrupt
HDMA Transfer Complete
interrupt generated here
generated here
SADDRx, CTRLAx,CTRLBx, DSCRx
Hardware reprograms
HDMA buffer transfer
Channel Enabled by
Writeback of control
Channel Disabled by
information of LLI
Is HDMA in
LLI Fetch
Row 1 ?
software
hardware
yes
no
AT91SAM9G45
1001
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