MPC8313E datasheet(30/88 Pages) FREESCALE

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

Freescale Semiconductor

Ethernet: Three-Speed Ethernet, MII Management

8.3

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

MII, RMII, RGMII, SGMII, and RTBI are specified in Section 8.1, “Enhanced Three-Speed Ethernet

Controller (eTSEC) (10/100/1000 Mbps)—MII/RMII/RGMII/SGMII/RTBI Electrical Characteristics.”

8.3.1

MII Management DC Electrical Characteristics

The MDC and MDIO are defined to operate at a supply voltage of 2.5V or 3.3 V. The DC electrical

characteristics for MDIO and MDC are provided in Table 29 and Table 30.

Table 29. MII Management DC Electrical Characteristics When Powered at 2.5 V

Parameter

Symbol

Conditions

Min

Max

Unit

Supply voltage (2.5 V) NVDDA/NVDDB

—2.37

2.63

Output high voltage

VOH

IOH = –1.0 mA NVDDA or NVDDB = Min

2.00

NVDDA + 0.3

NVDDB + 0.3

Output low voltage

VOL

IOL = 1.0 mA

NVDDA or NVDDB = Min

VSS – 0.3

0.40

Input high voltage

VIH

—NVDDA or NVDDB = Min

1.7

—

Input low voltage

VIL

—NVDDA or NVDDB = Min

–0.3

0.70

Input high current

IIH

VIN

1 = NV

DDA or NVDDB

—10

μA

Input low current

IIL

VIN = NVDDA or NVDDB

–15

—

μA

Note:

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

Table 30. MII Management DC Electrical Characteristics When Powered at 3.3 V

Parameter

Symbol

Conditions

Min

Max

Unit

Supply voltage (3.3 V) NVDDA/NVDDB

—

2.97

3.63

Output high voltage

VOH

IOH = –1.0 mA

NVDDA or NVDDB = Min

2.10

NVDDA +0.3

NVDDB +0.3

Output low voltage

VOL

IOL = 1.0 mA

LVDDA or LVDDB = Min

VSS

0.50

Input high voltage

VIH

—2.00

—

Input low voltage

VIL

——

0.80

Input high current

IIH

NVDDA or NVDDB = Max

VIN

1 = 2.1 V

—

μA

Input low current

IIL

NVDDA or NVDDB = Max

VIN = 0.5 V

–600

—

μA

Note:

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

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