AT91SAM9RL64-CU Atmel, AT91SAM9RL64-CU Datasheet - Page 593

• Manufacturer Part Number: AT91SAM9RL64-CU
• Description: IC ARM9 MCU 217-LFBGA
• Manufacturer: Atmel
• Series: AT91SAMr

Specifications of AT91SAM9RL64-CU

• Core Processor: ARM9
• Core Size: 16/32-Bit
• Speed: 240MHz
• Connectivity: EBI/EMI, I²C, MMC, SPI, SSC, UART/USART, USB
• Peripherals: AC'97, LCD, POR, PWM, WDT
• Number Of I /o: 118
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: ROM
• Ram Size: 72K x 8
• Voltage - Supply (vcc/vdd): 1.08 V ~ 1.32 V
• Data Converters: A/D 6x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 217-LFBGA
• Processor Series: AT91SAMx
• Core: ARM926EJ-S
• Data Bus Width: 32 bit
• Data Ram Size: 64 KB
• Interface Type: 2-Wire, SPI, SSC, USART
• Maximum Clock Frequency: 240 MHz
• Number Of Programmable I/os: 118
• Number Of Timers: 4
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: JTRACE-ARM-2M, MDK-ARM, RL-ARM, ULINK2
• Development Tools By Supplier: AT91SAM-ICE, AT91-ISP
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 6 Channel
• Controller Family/series: AT91SAM9xxx
• No. Of I/o's: 118
• Ram Memory Size: 64KB
• Cpu Speed: 240MHz
• No. Of Timers: 1
• Rohs Compliant: Yes
• Package: 217LFBGA
• Device Core: ARM926EJ-S
• Family Name: 91S
• Maximum Speed: 240 MHz
• Operating Supply Voltage: 1.8|3.3 V
• For Use With: AT91SAM9RL-EK - KIT EVAL FOR AT91SAM9RLAT91SAM-ICE - EMULATOR FOR AT91 ARM7/ARM9
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Figure 37-15. DMAC Transfer Flow for Linked List Source Address and Contiguous Destination Address
37.3.5
6289C–ATARM–28-May-09
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
AT91SAM9R64/RL64 Preliminary
information of LLI
Is HDMA in
LLI Fetch
Row 1 ?
software
hardware
yes
no
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