ppc8572elpxavnd Freescale Semiconductor, Inc, ppc8572elpxavnd Datasheet - Page 121

• Manufacturer Part Number: ppc8572elpxavnd
• Description: Mpc8572e Powerquicc Iii Integrated Communications Processors
• Manufacturer: Freescale Semiconductor, Inc

Note that the DDR PLL reference clock input, DDRCLK, is only required in asynchronous mode.
MPC8572E does not support running one DDR controller in synchronous mode and the other in
asynchronous mode.
19.5
19.5.1
Table 82
clock to SYSCLK ratio.
Freescale Semiconductor
shows the expected frequency values for the platform frequency when using the specified CCB
Frequency Options
SYSCLK Ratio
Platform to Sysclk Frequency Options
CCB to
10
12
4
5
6
8
MPC8572E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 4
TSEC_1588_PULSE_OUT2 Signals
33.33
Table 82. Frequency Options for Platform Frequency
400
TSEC_1588_PULSE_OUT1,
TSEC_1588_CLK_OUT,
Binary Value of
41.66
417
500
000
001
010
011
100
101
110
111
Table 81. DDR Clock Ratio
400
500
600
50
Platform /CCB Frequency (MHz)
66.66
SYSCLK (MHz)
400
533
415
498
DDR:DDRCLK Ratio
83
Synchronous mode
10:1
12:1
14:1
3:1
4:1
6:1
8:1
100
400
500
600
111
444
555
133.33
533
Clocking
121