MPC8560CPXAPDB datasheet(25/108 Pages) FREESCALE

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MPC8560 Integrated Processor Hardware Specifications, Rev. 3.1

Freescale Semiconductor

Ethernet: Three-Speed, MII Management

This section provides the AC and DC electrical characteristics for three-speed and MII management.

7.1 Three-Speed Ethernet Controller (TSEC)

(10/100/1Gb Mbps)—GMII/MII/TBI/RGMII/RTBI Electrical

Characteristics

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

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

(reduced ten-bit interface) signals except MDIO (management data input/output) and MDC (management data

clock). The RGMII and RTBI interfaces are defined for 2.5 V, while the GMII, MII, and TBI interfaces can be

operated at 3.3 or 2.5 V. Whether the GMII, MII, or TBI interface is operated at 3.3 or 2.5 V, the timing is compliant

with the IEEE 802.3 standard. The RGMII and RTBI interfaces follow the Hewlett-Packard reduced pin-count

interface for Gigabit Ethernet Physical Layer Device Specification Version 1.2a (9/22/2000). The electrical

characteristics for MDIO and MDC are specified in Section 7.3, “Ethernet Management Interface Electrical

Characteristics.”

7.1.1 TSEC DC Electrical Characteristics

All GMII,MII, TBI, RGMII, and RTBI drivers and receivers comply with the DC parametric attributes specified in

Table 18 and Table 19. The potential applied to the input of a GMII,MII, TBI, RGMII, or RTBI receiver may exceed

the potential of the receiver’s power supply (i.e., a GMII driver powered from a 3.6 V supply driving VOH into a

GMII receiver powered from a 2.5 V supply). Tolerance for dissimilar GMII driver and receiver supply potentials

is implicit in these specifications. The RGMII and RTBI signals are based on a 2.5 V CMOS interface voltage as

defined by JEDEC EIA/JESD8-5.

Table 18. GMII, MII, and TBI DC Electrical Characteristics

Parameter

Symbol

Min

Max

Unit

Supply voltage 3.3 V

LVDD

3.13

3.47

Output high voltage

(LVDD = Min, IOH = –4.0 mA)

VOH

2.40

LVDD + 0.3

Output low voltage

(LVDD = Min, IOL = 4.0 mA)

VOL

GND

0.50

Input high voltage

VIH

1.70

LVDD + 0.3

Input low voltage

VIL

–0.3

0.90

Input high current

(VIN

1 = LV

DD)

IIH

—

µA

Input low current

(VIN

1 = GND)

IIL

–600

—

µA

Note:

1.The symbol VIN, in this case, represents the LVIN symbol referenced in Table 1 and Table 2.

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