MPC8610EC datasheet(20/96 Pages) FREESCALE

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MPC8610 Integrated Host Processor Hardware Specifications, Rev. 0

Electrical Characteristics

Freescale Semiconductor

2.2

Power Sequencing

The MPC8610 requires its power rails to be applied in a specific sequence in order to ensure proper device operation. These

requirements are as follows:

The chronological order of power up is:

OVDD, BVDD

VDD_PLAT, AVDD_PLAT, VDD_Core, AVDD_Core, AVDD_PCI, SnVDD, XnVDD, SDnAVDD (this rail must reach

90% of its value before the rail for GVDD and MVREF reaches 10% of its value)

GVDD, MVREF

SYSCLK

The order of power down is as follows:

SYSCLK

GVDD, MVREF

VDD_PLAT, AVDD_PLAT, VDD_Core, AVDD_Core, AVDD_PCI, SnVDD, XnVDD, SDnAVDD

ODD, BVDD

NOTE

AVDD type supplies should be delayed with respect to their source supplies by the RC time

constant of the PLL filter circuit described in Section 3.2, “Power Supply Design and

Sequencing.”

Local bus

BVDD = 3.3 V

BVDD = 2.5 V

45 (default)

125

BVDD = 3.3 V

BVDD = 2.5 V

BVDD = 1.8 V

PCI, DUART, DMA, interrupts, system control and clocking, debug,

test, JTAG, power management, and miscellaneous I/O voltage

OVDD = 3.3 V

I2C

150

OVDD = 3.3 V

PCI Express

100

XVDD = 1.0 V

Notes:

1. See the DDR control driver registers in the

MPC8610 Integrated Host Processor Reference Manual, for more information.

2. See the POR impedance control register in the

MPC8610 Integrated Host Processor Reference Manual, for more information

about local bus signals and their drive strength programmability.

3. See Section 1.1, “Pin Assignments,” for details on resistor requirements for the calibration of SD

n_IMP_CAL_TX and

n_IMP_CAL_RX transmit and receive signals.

4. Stub series terminated logic (SSTL-25) type pins.

5. Stub series terminated logic (SSTL-18) type pins.

6. The drive strength of the DDR interface in half strength mode is at Tj = 105°C and at GVDD (min).

Table 4. Output Drive Capability (continued)

Driver Type

Programmable

Output Impedance

(

Ω)

Supply

Voltage

Notes

MPC8610EC Datasheet(PDF) 20 Page - Freescale Semiconductor, Inc

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