MPC8323ECVRADDC datasheet(24/80 Pages) FREESCALE

24 / 80 page

MPC8323E PowerQUICC™ II Pro Integrated Communications Processor Family Hardware Specifications, Rev. 0

Freescale Semiconductor

Ethernet and MII Management

8.3.1

MII Management DC Electrical Characteristics

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 27.

8.3.2

MII Management AC Electrical Specifications

Table 28 provides the MII management AC timing specifications.

Table 27. MII Management DC Electrical Characteristics When Powered at 3.3 V

Parameter

Symbol

Conditions

Min

Max

Unit

Supply voltage (3.3 V)

OVDD

—

2.97

3.63

Output high voltage

VOH

IOH = –1.0 mA

OVDD = Min

2.10

OVDD + 0.3

Output low voltage

VOL

IOL = 1.0 mA

OVDD = Min

GND

0.50

Input high voltage

VIH

—2.00

—

Input low voltage

VIL

——

0.80

Input current

IIN

0 V

≤ VIN ≤ OVDD

—±5

μA

Table 28. MII Management AC Timing Specifications

At recommended operating conditions with OVDD is 3.3 V ± 10%.

Parameter/Condition

Symbol1

Min

Typical

Max

Unit

Notes

MDC frequency

fMDC

—2.5

—

MHz

MDC period

tMDC

—400

—

MDC clock pulse width high

tMDCH

—

MDC to MDIO delay

tMDKHDX

—

MDIO to MDC setup time

tMDDVKH

5—

—

MDIO to MDC hold time

tMDDXKH

0—

—

MDC rise time

tMDCR

—

MDC fall time

tMDHF

—

Note:

1. The symbols used for timing specifications follow the pattern of t(first two letters of functional block)(signal)(state)(reference)(state) for

inputs and t(first two letters of functional block)(reference)(state)(signal)(state) for outputs. For example, tMDKHDX symbolizes management

data timing (MD) for the time tMDC from clock reference (K) high (H) until data outputs (D) are invalid (X) or data hold time.

Also, tMDDVKH symbolizes management data timing (MD) with respect to the time data input signals (D) reach the valid state

(V) relative to the tMDC clock reference (K) going to the high (H) state or setup time. For rise and fall times, the latter

convention is used with the appropriate letter: R (rise) or F (fall).

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