MPC8540CVT667JC datasheet(11/104 Pages) FREESCALE

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MPC8540 Integrated Processor Hardware Specifications, Rev. 4

Freescale Semiconductor

Power Characteristics

2.1.4 Output Driver Characteristics

Table 3 provides information on the characteristics of the output driver strengths. The values are

preliminary estimates.

3 Power Characteristics

The estimated power dissipation on the VDD supply for the MPC8540 is shown in Table 4.

Table 3. Output Drive Capability

Driver Type

Programmable

Output Impedance

(

Ω)

Supply

Voltage

Notes

Local bus interface utilities signals

OVDD = 3.3 V

42 (default)

PCI signals

42 (default)

DDR signal

GVDD = 2.5 V

TSEC/10/100 signals

LVDD = 2.5/3.3 V

DUART, system control, I2C, JTAG

OVDD = 3.3 V

RapidIO N/A (LVDS signaling)

N/A

Notes:

1. The drive strength of the local bus interface is determined by the configuration of the appropriate bits in

PORIMPSCR.

2. The drive strength of the PCI interface is determined by the setting of the PCI_GNT1 signal at reset.

Table 4. MPC8540 VDD Power Dissipation

1,2

CCB Frequency

(MHz)

Core

Frequency (MHz)

Typical Power3,4

Maximum

Power5

Unit

200

400

4.6

7.2

500

4.9

7.5

600

5.3

7.9

267

533

5.5

8.2

667

5.9

8.7

800

6.4

10.2

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