MPC8569E datasheet(54/127 Pages) FREESCALE

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MPC8569E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 1

Ethernet Interface

Freescale Semiconductor

2.6

Ethernet Interface

This section provides the AC and DC electrical characteristics for the Ethernet interfaces inside the QUICC Engine block.

2.6.1

GMII/SGMII/MII/SMII/RMII/TBI/RGMII/RTBI Electrical Characteristics

The electrical characteristics specified here apply to all gigabit media independent interface (GMII), serial gigabit media

independent interface (SGMII), media independent interface (MII), ten-bit interface (TBI), reduced gigabit media independent

interface (RGMII), reduced ten-bit interface (RTBI), and reduced media independent interface (RMII) signals except

management data input/output (MDIO) and management data clock (MDC). The RGMII and RTBI interfaces are defined for

2.5 V, while the GMII and TBI interfaces are defined for 3.3 V. The GMII, MII, and TBI interface timing is compatible with

IEEE Std 802.3™. The RGMII and RTBI interfaces follow the Reduced Gigabit Media-Independent Interface (RGMII)

Specification Version 1.3 (12/10/2000). The RMII interface follows the RMII Consortium RMII Specification Version 1.2

(3/20/1998). The electrical characteristics for the SGMII is specified in Section 2.6.4, “SGMII Interface Electrical

Characteristics.” The electrical characteristics for MDIO and MDC are specified in Section 2.7, “Ethernet Management

Interface.”

2.6.2

GMII, MII, RMII, SMII, TBI, RGMII and RTBI DC Electrical

Characteristics

The following table shows the GMII, MII, RMII, SMII, and TBI DC electrical characteristics when operating from a 3.3 V

supply.

The following table shows the RGMII, and RTBI DC electrical characteristics when operating from a 2.5 V supply.

Table 23. GMII, MII, RMII, SMII, and TBI DC Electrical Characteristics

At recommended operating conditions with LVDD =3.3 V

Parameter

Symbol

Min

Max

Unit

Notes

Input high voltage

VIH

2.0

—

Input low voltage

VIL

—0.90

—

Input high current (VIN = LVDD)IIH

—40

μA2

Input low current (VIN = GND)

IIL

–600

—

μA2

Output high voltage (LVDD = min, IOH = –4.0 mA)

VOH

2.1

LVDD + 0.3

—

Output low voltage (LVDD = min, IOL = 4.0 mA)

VOL

GND

0.50

—

Note:

1. The min VILand max VIH values are based on the respective min and max LVIN values found in Table 3.

2. The symbol VIN, in this case, represents the LVIN symbols referenced in Table 2 and Table 3.

Table 24. RGMII and RTBI DC Electrical Characteristics

At recommended operating conditions with LVDD =2.5 V

Parameter

Symbol

Min

Max

Unit

Note

Input high voltage

VIH

1.70

—

Input low voltage

VIL

—0.70

—

Input high current (VIN = LVDD)IIH

—10

μA1

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