Examples For Configuring Clock Regiter To Produce Specific Frequency Of Amba Clocks - Samsung S3C2416 User Manual

S3C2416X RISC MICROPROCESSOR
5.7 EXAMPLES FOR CONFIGURING CLOCK REGITER TO PRODUCE SPECIFIC FREQUENCY OF AMBA
CLOCKS.
When PLL output frequency = 800MHz
Target frqeuency
ARMCLK = 400MHz, HCLK
SSMCCLK = 66MHz
Register value
ARMDIV = 4'b0001,
HALKHCLK = 1'b1
When PLL output frequency = 533MHz
Target frqeuency
ARMCLK = 266MHz, HCLK
SSMCCLK = 66MHz
Register value
ARMDIV = 4'b0001,
HALKHCLK = 1'b1
= 133MHz, PCLK
PREDIV = 2'b10,
= 133MHz, PCLK
PREDIV = 2'b01,
= 66MHz,
HCLKDIV = 2'b01,
= 66MHz,
HCLKDIV = 2'b01,
SYSTEM CONTROLLER
DDRCLK = 266MHz
PCLKDIV = 1'b1
DDRCLK = 266MHz
PCLKDIV = 1'b1
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