SAM9G45 Atmel Corporation, SAM9G45 Datasheet - Page 148

• Manufacturer Part Number: SAM9G45
• Manufacturer: Atmel Corporation

Specifications of SAM9G45

• 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: No
• 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

Bus Interface Unit
6-8
ARM926EJ-S
processor
Multi-layer AHB is described in more detail in the Multi-layer AHB Overview.
Multi-AHB systems
It is possible that the ARM926EJ-S instruction and data AHB interfaces can be
connected to separate AHB systems, although there must be a mechanism to support
data side access to the instruction memory. Each AHB system can be running at
different frequencies. The ARM926EJ-S processor is able to cope with this by
providing two HCLKEN inputs:
•
•
Figure 6-2 on page 6-9 shows an example of a Multi-AHB system.
Copyright © 2001-2003 ARM Limited. All rights reserved.
DHCLKEN is used to specify the rising HCLK edge for the system in which the
data BIU is the master
IHCLKEN is used to specify the rising HCLK edge for the system in which the
instruction BIU is the master.
master
master
master
D-side
I-side
DMA
stage
stage
stage
Input
Input
Input
Decode
Decode
Decode
Figure 6-1 Multi-layer AHB system example
Interconnect
matrix
Mux
Mux
Mux
Mux
ARM DDI0198D
Slave
Slave
Slave
Slave
# 1
# 2
# 3
# 4