AT91SAM9G45-EKES Atmel, AT91SAM9G45-EKES Datasheet - Page 325

• Manufacturer Part Number: AT91SAM9G45-EKES
• Description: KIT EVAL FOR AT91SAM9G45
• Manufacturer: Atmel
• Series: AT91SAM Smart ARMr
• Type: MCUr

Specifications of AT91SAM9G45-EKES

• Contents: Board
• Processor To Be Evaluated: SAM9G45
• Data Bus Width: 32 bit
• Interface Type: I2C, SPI, UART
• Maximum Operating Temperature: + 50 C
• Minimum Operating Temperature: - 10 C
• Operating Supply Voltage: 1.8 V to 3.3 V
• For Use With/related Products: AT91SAM9G45
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: Q4626953

25.11.13 PMC Programmable Clock Register
Register Name:PMC_PCKx
Address:
Access Type:Read/Write
• CSS: Master Clock Selection
• PRES: Programmable Clock Prescaler
• SLCKMCK: Slow Clock or Master Clock Selection
0 = Slow clock is selected
1 = Master clock is selected
To select between Slow Clock and Master Clock, the CSS field must be programmed to ‘00’.
6438F–ATARM–21-Jun-10
31
23
15
–
–
–
7
–
0xFFFFFC40
0
0
0
0
1
1
1
1
0
0
1
1
30
22
14
–
–
–
6
–
CSS
29
21
13
–
–
–
5
–
PRES
0
0
1
1
0
0
1
1
0
1
0
1
28
20
12
–
–
–
4
Clock Source Selection
Slow Clock or Master Clock may be selected depending on
SLCKMCK field.
Main Clock is selected.
PLLACK/PLLADIV2 is selected.
UPLLCK is selected.
PRES
27
19
11
–
–
–
3
0
1
0
1
0
1
0
1
26
18
10
–
–
–
2
Programmable Clock
Selected clock
Selected clock divided by 2
Selected clock divided by 4
Selected clock divided by 8
Selected clock divided by 16
Selected clock divided by 32
Selected clock divided by 64
Reserved
AT91SAM9G45
25
17
–
–
–
9
1
CSS
SLCKMCK
24
16
–
–
8
0
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