MPC8349E-MITXE Freescale Semiconductor, MPC8349E-MITXE Datasheet - Page 36

• Manufacturer Part Number: MPC8349E-MITXE
• Description: BOARD REFERENCE FOR MPC8349
• Manufacturer: Freescale Semiconductor
• Series: PowerQUICC II™ PROr
• Type: MPUr

Specifications of MPC8349E-MITXE

• Contents: Module and Misc Hardware
• Processor To Be Evaluated: MPC8349E
• Interface Type: Ethernet, USB
• Silicon Manufacturer: Freescale
• Core Architecture: Power Architecture
• Core Sub-architecture: PowerQUICC
• Silicon Core Number: MPC83xx
• Silicon Family Name: PowerQUICC II PRO
• Rohs Compliant: Yes
• For Use With/related Products: MPC8349E
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: MPC8349E-MITXE

Bit Setting
MPC8349E-mITXE 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.
36
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
Example of Changing the RCW Register Using Uboot
1
66.666 MHz
66.666 MHz
66.666 MHz
66.666 MHz
66.666 MHz
66.666 MHz
66.666 MHz
66.666 MHz
66.666 MHz
Figure 26. Reset Configuration Word Low (RCW) Bit Settings Example
—
CLKIN
0
MPC8349E-mITXE Reference Design Platform User’s Guide, Rev. 2
3
0
0101
0100
0011
0101
0100
0011
0101
0100
0011
SPMF
[0–3]
Preliminary—Subject to Change Without Notice
4
0
333 MHz
266 MHz
200 MHz
333 MHz
266 MHz
200 MHz
333 MHz
266 MHz
200 MHz
CCB
Table 22. Core PLL Ratio
1
SPMF
CLKIN
clock:
Ratio
0
CCB
5:1
4:1
3:1
5:1
4:1
3:1
5:1
4:1
3:1
7
0
COREPLL
00 0010 0 667 MHz
00 0010 1 667 MHz
00 0010 0 600 MHz
01 0001 1 500 MHz
00 0010 0 533 MHz
00 0010 1 500 MHz
00 0001 0
01 0001 1 400 MHz
01 0010 0 400 MHz
[0–6]
—
8
0
333 MHz
Frequency
9
0
Core
1
Figure 26
CLKIN Ratio
CCB Clock:
0
2.5:1
1.5:1
2.5:1
1.5:1
COREPLL
2:1
3:1
2:1
1:1
2:1
Freescale Semiconductor
0
shows the change
0
1
15
1