MPC8349E-MITX-GP Freescale Semiconductor, MPC8349E-MITX-GP Datasheet - Page 26

• Manufacturer Part Number: MPC8349E-MITX-GP
• Description: KIT REFERENCE PLATFORM MPC8349E
• Manufacturer: Freescale Semiconductor
• Series: PowerQUICC II™ PROr
• Type: MPUr

Specifications of MPC8349E-MITX-GP

• Contents: Module and Misc Hardware
• For Use With/related Products: MPC8349E
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Bit Setting
MPC8349E-mITX-GP Board
1.6.4.2
Issue the following uboot commands to change from 533/266 to 400/266 (CPU/CCB):
To make the changes take effect, power off the system and then power it on.
in bit settings from these uboot commands. There is no change in the SPMF field since 0b0100 is the
default value representing the 266 MHz CCB frequency. The COREPLL field is changed from the default
value of 0b000_0100 representing 533 MHz to the new value of 0b010_0011 representing 400 MHz core
frequency.
1.6.5
The MPC8349E requires a 3.3 V and 5 V power supply from the ATX power connector for normal
operation. The 3.3 V power supply is reduced to 1.2 V and 2.5 V. The 1.2 V power is generated from a
switching power supply for a CPU core. The 2.5 V power is generated from an LDO regulator for the DDR
controller.
26
Field
cp.b FE000000 100000 40
mw.b 100008 23 8
md 100000
erase FE000000 FE00FFFF
md FE000000
cp.b 100000 FE000000 40
md FE000000
reset
0
0
Power Supply
Example of Changing the RCW Register Using Uboot
1
Figure 19. Reset Configuration Word Low (RCW) Bit Settings Example
—
MPC8349E-mITX-GP Reference Design Platform User’s Guide, Rev. 0
0
3
0
Preliminary—Subject to Change Without Notice
4
0
1
SPMF
0
7
0
—
8
0
9
0
1
Figure 19
0
COREPLL
Freescale Semiconductor
0
shows the change
0
1
15
1