MPC8540CPX667JC 参数 Datasheet PDF下载

Ethernet: Three-Speed,10/100, MII Management

shows the MII receive AC timing diagram.

t

MRX

RX_CLK

t

MRXH

RXD[3:0]

RX_DV

RX_ER

t

MRDVKH

t

MRDXKH

t

MRXF

Valid Data

t

MRXR

Figure 15. MII Receive AC Timing Diagram

8.4 Ethernet Management Interface Electrical Characteristics

The electrical characteristics specified here apply to MII management interface signals MDIO

(management data input/output) and MDC (management data clock). The electrical characteristics for

GMII, RGMII, TBI and RTBI are specified in

8.4.1 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 33. MII Management DC Electrical Characteristics

Parameter

Supply voltage (3.3 V)

Output high voltage

(OV

DD

= Min, I

OH

= –1.0 mA)

Output low voltage

(OV

DD

= Min, I

OL

= 1.0 mA)

Input high voltage

Input low voltage

Input high current

(OV

DD

= Max, V

IN 1

= 2.1 V)

Input low current

(OV

DD

= Max, V

IN

= 0.5 V)

Symbol

OV

DD

V

OH

V

OL

V

IH

V

IL

I

IH

I

IL

Min

3.13

2.10

Max

3.47

OV

DD

+ 0.3

0.50

Unit

V

V

GND

V

1.70

—

—

—

0.90

40

V

V

μA

μA

–600

—

Note:

1.Note that the symbol V

IN

, in this case, represents the OV

IN

symbol referenced in

and

MPC8540 Integrated Processor Hardware Specifications, Rev. 4

34

Freescale Semiconductor