MPC8313E datasheet(10/88 Pages) FREESCALE

10 / 88 page

MPC8313E PowerQUICC™ II Pro Processor Hardware Specifications, Rev. 0

Freescale Semiconductor

Electrical Characteristics

Figure 3 shows the undershoot and overshoot voltage of the PCI interface of the MPC8313E for the 3.3-V

signals, respectively.

Figure 3. Maximum AC Waveforms on PCI Interface for 3.3-V Signaling

2.1.3

Output Driver Characteristics

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

preliminary estimates.

2.2

Power Sequencing

The MPC8313E does not require the core supply voltage and IO supply voltages to be applied in any

particular order. Note that during the power ramp-up, before the power supplies are stable, there might be

a period when IO pins are actively driven. After the power is stable, as long as PORESET is asserted, most

IO pins are tri-stated. In order to minimize the time that IO pins are being actively driven, it is

Table 3. Output Drive Capability

Driver Type

Output Impedance

(

Ω)

Supply

Voltage

Local bus interface utilities signals

NVDD = 3.3 V

PCI signals

DDR signal

GVDD = 2.5 V

DDR2 signal

GVDD = 1.8 V

DUART, system control, I2C, JTAG,SPI

NVDD = 3.3 V

GPIO signals

NVDD = 3.3 V

eTSEC signals

LVDDA, LVDDB = 2.5/3.3 V

USB Signals

LVDDB = 2.5/3.3 V

Undervoltage

Waveform

Overvoltage

Waveform

11 ns

(Min)

+7.1 V

7.1 V p-to-p

(Min)

4 ns

(Max)

–3.5 V

7.1 V p-to-p

(Min)

62.5 ns

+3.6 V

0 V

4 ns

(Max)

MPC8313E Datasheet(PDF) 10 Page - Freescale Semiconductor, Inc

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