MPC855TZQ80D4 Freescale Semiconductor, MPC855TZQ80D4 Datasheet - Page 67

• Manufacturer Part Number: MPC855TZQ80D4
• Description: IC MPU POWERQUICC 80MHZ 357PBGA
• Manufacturer: Freescale Semiconductor
• Series: PowerQUICCr

Specifications of MPC855TZQ80D4

• Processor Type: MPC8xx PowerQUICC 32-Bit
• Speed: 80MHz
• Voltage: 3.3V
• Mounting Type: Surface Mount
• Package / Case: 357-PBGA
• Processor Series: MPC8xx
• Core: MPC8xx
• Data Bus Width: 32 bit
• Maximum Clock Frequency: 80 MHz
• Operating Supply Voltage: 2.5 V, 3.3 V
• Maximum Operating Temperature: + 95 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: 0 C
• Core Size: 32 Bit
• Program Memory Size: 8KB
• Cpu Speed: 80MHz
• Digital Ic Case Style: BGA
• No. Of Pins: 357
• Supply Voltage Range: 3.135V To 3.465V
• Rohs Compliant: No
• Features: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

15.2
The platform clock is the clock that drives the L2 cache, the DDR SDRAM data rate, and the e500 core
complex bus (CCB), and is also called the CCB clock. The values are determined by the binary value on
LA[28:31] at power up, as shown in
There is no default for this PLL ratio; these signals must be pulled to the desired values.
For specifications on the PCI_CLK, refer to the PCI 2.2 Specification.
Freescale Semiconductor
MPC8555E PowerQUICC™ III Integrated Communications Processor Hardware Specification, Rev. 4.2
Platform/System PLL Ratio
LA[28:31] Signals
Binary Value of
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
Table
Table 46. CCB Clock Ratio
46.
16:1 ratio CCB clock: SYSCLK (PCI bus)
Reserved
2:1 ratio CCB clock: SYSCLK (PCI bus)
3:1 ratio CCB clock: SYSCLK (PCI bus)
4:1 ratio CCB clock: SYSCLK (PCI bus)
5:1 ratio CCB clock: SYSCLK (PCI bus)
6:1 ratio CCB clock: SYSCLK (PCI bus)
Reserved
8:1 ratio CCB clock: SYSCLK (PCI bus)
9:1 ratio CCB clock: SYSCLK (PCI bus)
10:1 ratio CCB clock: SYSCLK (PCI bus)
Reserved
12:1 ratio CCB clock: SYSCLK (PCI bus)
Reserved
Reserved
Reserved
Ratio Description
Clocking
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