MPC8347VRAGDB datasheet(32/99 Pages) FREESCALE

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MPC8347EA PowerQUICC II Pro Integrated Host Processor Hardware Specifications, Rev. 12

Freescale Semiconductor

Ethernet: Three-Speed Ethernet, MII Management

Figure 16 shows the RBMII and RTBI AC timing and multiplexing diagrams.

Figure 16. RGMII and RTBI AC Timing and Multiplexing Diagrams

8.3

Ethernet Management Interface Electrical Characteristics

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

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

RGMII, TBI and RTBI are specified in Section 8.1, “Three-Speed Ethernet Controller

(TSEC)—GMII/MII/TBI/RGMII/RTBI Electrical Characteristics.”

8.3.1

MII Management DC Electrical Characteristics

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

characteristics for MDIO and MDC are provided in Table 32 and Table 33.

Table 32. MII Management DC Electrical Characteristics Powered at 2.5 V

Parameter

Symbol

Conditions

Min

Max

Unit

Supply voltage (2.5 V)

LVDD

—

2.37

2.63

Output high voltage

VOH

IOH = –1.0 mA

LVDD = Min

2.00

LVDD +0.3

Output low voltage

VOL

IOL = 1.0 mA

LVDD = Min

GND – 0.3

0.40

Input high voltage

VIH

—LVDD = Min

1.7

—

Input low voltage

VIL

—LVDD = Min

–0.3

0.70

GTX_CLK

tRGT

tRGTH

tSKRGT

TX_CTL

TXD[8:5]

TXD[7:4]

TXD[9]

TXERR

TXD[4]

TXEN

TXD[3:0]

(At Transmitter)

TXD[8:5][3:0]

TXD[7:4][3:0]

TX_CLK

(At PHY)

RX_CTL

RXD[8:5]

RXD[7:4]

RXD[9]

RXERR

RXD[4]

RXDV

RXD[3:0]

RXD[8:5][3:0]

RXD[7:4][3:0]

RX_CLK

(At PHY)

tSKRGT

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