MPC8308CVMADDA datasheet(20/95 Pages) NXP

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MPC8308 PowerQUICC II Pro Processor Hardware Specification, Rev. 4

Freescale Semiconductor

Ethernet: Three-Speed Ethernet, MII management

This figure shows the RGMII AC timing and multiplexing diagrams.

Figure 11. RGMII AC Timing and Multiplexing Diagrams

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

and RGMII are specified in Section 8.1, “Enhanced Three-Speed Ethernet Controller (eTSEC)

(10/100/1000 Mbps)—MII/RGMII electrical characteristics.”

8.3.1

MII Management DC electrical characteristics

The MDC and MDIO are defined to operate at a supply voltage of 3.3 V. This table provides the DC

electrical characteristics for MDIO and MDC.

Table 26. MII Management DC Electrical Characteristics When Powered at 3.3 V

Parameter

Symbol

Conditions

Min

Max

Unit

Supply voltage (3.3 V)

NVDD

—3.0

3.6

Output high voltage

VOH

IOH = –1.0 mA

NVDD = Min

2.10

NVDD +0.3

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