MPC8377E datasheet(23/126 Pages) FREESCALE

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MPC8377E PowerQUICC II Pro Processor Hardware Specifications, Rev. 4

Freescale Semiconductor

Ethernet: Enhanced Three-Speed Ethernet (eTSEC)

This section provides the AC and DC electrical characteristics for the enhanced three-speed Ethernet

controller.

8.1

Enhanced Three-Speed Ethernet Controller (eTSEC)

(10/100/1000 Mbps)—MII/RGMII/RTBI/RMII DC Electrical

Characteristics

The electrical characteristics specified here apply to media independent interface (MII), reduced gigabit

media independent interface (RGMII), reduced ten-bit interface (RTBI), reduced media independent

interface (RMII) signals, management data input/output (MDIO) and management data clock (MDC).

The MII and RMII interfaces are defined for 3.3 V, while the RGMII and RTBI interfaces can be operated

at 2.5 V. The RGMII and RTBI interfaces follow the Reduced Gigabit Media-Independent Interface

(RGMII) Specification Version 1.3. The RMII interface follows the RMII Consortium RMII Specification

Version 1.2.

8.1.1

MII, RMII, RGMII, and RTBI DC Electrical Characteristics

MII and RMII drivers and receivers comply with the DC parametric attributes specified in Table 24 and

Table 25. The RGMII and RTBI signals in Table 25 are based on a 2.5 V CMOS interface voltage as

defined by JEDEC EIA/JESD8-5.

Table 24. MII and RMII DC Electrical Characteristics

Parameter

Symbol

Min

Max

Unit

Notes

Supply voltage 3.3 V

LVDD1

LVDD2

3.13

3.47

Output high voltage

(LVDD1/LVDD2 = Min, IOH = –4.0 mA)

VOH

2.40

LVDD1/LVDD2 + 0.3

—

Output low voltage

(LVDD1/LVDD2 = Min, IOL = 4.0 mA)

VOL

GND

0.50

—

Input high voltage

VIH

2.0

LVDD1/LVDD2 + 0.3

—

Input low voltage

VIL

–0.3

0.90

—

Input high current

(VIN = LVDD1, VIN = LVDD2)

IIH

—30

μA

Input low current

(VIN = GND)

IIL

–600

—

μA—

Note:

1. LVDD1 supports eTSEC 1.

LVDD2 supports eTSEC 2.

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