MPC8255ACZUMIBB Freescale Semiconductor, MPC8255ACZUMIBB Datasheet - Page 20

• Manufacturer Part Number: MPC8255ACZUMIBB
• Description: IC MPU POWERQUICC II 480-TBGA
• Manufacturer: Freescale Semiconductor

Specifications of MPC8255ACZUMIBB

• Processor Type: MPC82xx PowerQUICC II 32-bit
• Speed: 266MHz
• Voltage: 2V
• Mounting Type: Surface Mount
• Package / Case: 480-TBGA
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Features: -

Clock Configuration Modes
3
To configure the main PLL multiplication factor and the core, CPM, and 60x bus frequencies, the
MODCK[1–3] pins are sampled while HRESET is asserted.
modes. Another 49 modes are available by using the configuration pin (RSTCONF) and driving four pins
on the data bus.
3.1
Table 12
Table 13
Note also that basic modes are shown in boldface type.
20
MODCK_H–MODCK[1–3]
MODCK[1–3]
000
001
010
011
100
101
110
111
Clock Configuration Modes
0001_000
0001_001
0001_010
0001_011
0001_100
describes default clock modes for the MPC8260.
describes all possible clock configurations when using the hard reset configuration sequence.
MPC8260 PowerQUICC II Integrated Communications Processor Hardware Specifications, Rev. 2
Local Bus Mode
The UPM machine outputs change on the internal tick determined by the
memory controller programming; the AC specifications are relative to the
internal tick. Note that SDRAM and GPCM machine outputs change on
CLKin’s rising edge.
Clock configurations change only after POR is asserted.
Input Clock
Frequency
33 MHz
33 MHz
33 MHz
33 MHz
66 MHz
66 MHz
66 MHz
66 MHz
Frequency
Input Clock
33 MHz
33 MHz
33 MHz
33 MHz
33 MHz
CPM Multiplication
Table 13. Clock Configuration Modes
2,3,4
Table 12. Clock Default Modes
Factor
2.5
2.5
3
3
4
4
2
2
CPM Multiplication
Factor
2
2
2
2
2
NOTE
NOTE
2, 5
Frequency
100 MHz
100 MHz
133 MHz
133 MHz
133 MHz
133 MHz
166 MHz
166 MHz
CPM
Table 12
Frequency
66 MHz
66 MHz
66 MHz
66 MHz
66 MHz
CPM
Core Multiplication Factor Core Frequency
shows the eight basic configuration
1
2
Core Multiplication
2.5
2.5
4
5
4
5
3
3
Factor
4
5
6
7
8
Freescale Semiconductor
2, 6
133 MHz
166 MHz
133 MHz
166 MHz
166 MHz
200 MHz
166 MHz
200 MHz
Frequency
133 MHz
166 MHz
200 MHz
233 MHz
266 MHz
Core
2