MPC8543EVUAQG 参数 Datasheet PDF下载

Ethernet Management Interface Electrical Characteristics

provides the AC test load for eTSEC.

Output

Z

0

= 50

Ω

R

L

= 50

Ω

LV

DD

/2

Figure 19. eTSEC AC Test Load

shows the RMII receive AC timing diagram.

t

RMR

TSECn_TX_CLK

t

RMRH

RXD[1:0]

CRS_DV

RX_ER

t

RMRDV

t

RMRDX

t

RMRF

Valid Data

t

RMRR

Figure 20. RMII Receive AC Timing Diagram

9

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, RMII, TBI, and RTBI are specified in “Section

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 36. 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

Symbol

OV

DD

V

OH

V

OL

V

IH

V

IL

Min

3.13

2.10

GND

2.0

—

Max

3.47

OV

DD

+ 0.3

0.50

—

0.90

Unit

V

V

V

V

V

MPC8548E PowerQUICC™ III Integrated Processor Hardware Specifications, Rev. 6

Freescale Semiconductor

39