MPC8313E datasheet(13/88 Pages) FREESCALE

13 / 88 page

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

Freescale Semiconductor

Clock Input Timing

This section provides the clock input DC and AC electrical characteristics for the MPC8313E.

4.1

DC Electrical Characteristics

Table 6 provides the clock input (SYS_CLK_IN/PCI_SYNC_IN) DC timing specifications for the

MPC8313E.

4.2

AC Electrical Characteristics

The primary clock source for the MPC8313E can be one of two inputs, SYS_CLK_IN or PCI_CLK,

depending on whether the device is configured in PCI host or PCI agent mode. Table 7 provides the clock

input (SYS_CLK_IN/PCI_CLK) AC timing specifications for the MPC8313E.

Table 6. SYS_CLK_IN DC Electrical Characteristics

Parameter

Condition

Symbol

Min

Max

Unit

Input high voltage

—

VIH

2.7

NVDD +0.3

Input low voltage

—

VIL

–0.3

0.4

SYS_CLK_IN Input current

0 V

≤ VIN ≤ NVDD

IIN

—±10

μA

PCI_SYNC_IN Input current

0 V

≤ VIN ≤ 0.5 V or

NVDD – 0.5 V ≤ VIN ≤ NVDD

IIN

—±10

μA

PCI_SYNC_IN Input current

0.5 V

≤ VIN ≤ NVDD – 0.5 V

IIN

—±50

μA

Table 7. SYS_CLK_IN AC Timing Specifications

Parameter/Condition

Symbol

Min

Typical

Max

Unit

Notes

SYS_CLK_IN/PCI_CLK frequency

fSYS_CLK_IN

—

MHz

SYS_CLK_IN/PCI_CLK cycle time

tSYS_CLK_IN

—

SYS_CLK_IN/PCI_CLK rise and fall time

tKH, tKL

0.6

0.8

1.2

SYS_CLK_IN/PCI_CLK duty cycle

tKHK/tSYS_CLK_IN

—

SYS_CLK_IN/PCI_CLK jitter

—

±150

4, 5

Notes:

1. Caution: The system, core, security block must not exceed their respective maximum or minimum operating frequencies.

2. Rise and fall times for SYS_CLK_IN/PCI_CLK are measured at 0.4 V and 2.7 V.

3. Timing is guaranteed by design and characterization.

4. This represents the total input jitter—short term and long term—and is guaranteed by design.

5. The SYS_CLK_IN/PCI_CLK driver’s closed loop jitter bandwidth should be < 500 kHz at –20 dB. The bandwidth must be set

low to allow cascade-connected PLL-based devices to track SYS_CLK_IN drivers with the specified jitter.

MPC8313E Datasheet(PDF) 13 Page - Freescale Semiconductor, Inc

MPC8313E Datasheet(HTML) 13 Page - Freescale Semiconductor, Inc

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