Datasheet

Electrical Characteristics
MPC5674F Microcontroller Data Sheet, Rev. 9
Freescale Semiconductor 43
2
Up to the maximum frequency rating of the device (refer to Table 1). The f
sys
speed is the nominal maximum frequency.
270 Mhz parts allow for 264 Mhz system clock + 2% FM.
3
See the MPC5674F Reference Manual for full description as not all bit combinations are valid.
4
EBI/Calibration bus is not available in all packages.
5
The EBI/Calibration Bus operating frequency, f
ebi_cal
, depends on clock divider settings of block’s max allowed
frequency of operation. Normally f
ebi_cal
=f
platf
/2, but can be limited to < f
platf
/2 in Full Mode.
Table 28. IPCLKDIV Settings
SIU_SYSDIV
[IPCLKDIV[0:1]]
Mode Description
00 Enhanced CPU frequency is doubled (Max 264Mhz). Platform,
peripheral, and eTPU clocks are 1/2 of CPU frequency
01 Full CPU and eTPU frequency is doubled (Max 200Mhz).
Platform and peripheral clocks are 1/2 of CPU frequency.
10 — Reserved
11 Legacy CPU, eTPU, platform, and peripheral’s clocks all run at
same speed (Max 132Mhz).
Table 29. SYSCLKDIV Settings
SIU_SYSDIV
[SYSCLKDIV[0:1]]
Description
00 Divide by 2.
01 Divide by 4.
10 Divide by 8.
11 Divide by 16.