MPC8640 datasheet(42/140 Pages) FREESCALE

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MPC8640 and MPC8640D Integrated Host Processor Hardware Specifications, Rev. 1

Freescale Semiconductor

Ethernet Management Interface Electrical Characteristics

9.1

MII Management DC Electrical Characteristics

The MDC and MDIO are defined to operate at a supply voltage of 3.3 V. The DC electrical characteristics

for MDIO and MDC are provided in Table 37.

9.2

MII Management AC Electrical Specifications

Table 38 provides the MII management AC timing specifications.

Table 37. MII Management DC Electrical Characteristics

Parameter

Symbol

Min

Max

Unit

Supply voltage (3.3 V)

OVDD

3.135

3.465

Output high voltage

(OVDD = Min, IOH = –1.0 mA)

VOH

2.10

—

Output low voltage

(OVDD =Min, IOL = 1.0 mA)

VOL

—0.50

Input high voltage

VIH

1.70

—

Input low voltage

VIL

—0.90

Input high current

(OVDD = Max, VIN

1 = 2.1 V)

IIH

—40

μA

Input low current

(OVDD = Max, VIN = 0.5 V)

IIL

–600

—

μA

Note:

1. Note that the symbol VIN, in this case, represents the OVIN symbol referenced in Table 1 and Table 2.

Table 38. MII Management AC Timing Specifications

At recommended operating conditions with OVDD is 3.3 V ± 5%.

Parameter/Condition

Symbol 1

Min

Typ

Max

Unit

Notes

MDC frequency

fMDC

2.5

—

9.3

MHz

2, 4

MDC period

tMDC

—

400

MDC clock pulse width high

tMDCH

—

MDC to MDIO valid

tMDKHDV

16*tMPXCLK

MDC to MDIO delay

tMDKHDX

—

16*tMPXCLK

3, 5

MDIO to MDC setup time

tMDDVKH

5—

—

MDIO to MDC hold time

tMDDXKH

0—

—

MDC rise time

tMDCR

—

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