MPC8315ECVRAGDA datasheet(31/112 Pages) FREESCALE

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MPC8315E PowerQUICC™ II Pro Processor Hardware Specifications, Rev. 0

Freescale Semiconductor

Ethernet: Three-Speed Ethernet, MII Management

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

Figure 16. RGMII and RTBI AC Timing and Multiplexing Diagrams

9.3

Ethernet Management Interface Electrical Characteristics

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

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

RGMII, and RTBI are specified in Section 9.1, “eTSEC (10/100/1000 Mbps)—MII/RMII/RGMII/RTBI

Electrical Characteristics.”

9.3.1

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 30.

Table 30. MII Management DC Electrical Characteristics 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

Output low voltage

VOL

IOL = 1.0 mA

NVDD = Min

VSS

0.50

Input high voltage

VIH

——

2.00

—

Input low voltage

VIL

———

0.80

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 Controller)

tSKRGT

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