MPC8569E datasheet(55/127 Pages) FREESCALE

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MPC8569E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 1

Freescale Semiconductor

2.6.3

GMII, MII, RMII, SMII, TBI, RGMII, and RTBI AC Timing Specifications

This section describes the AC timing specifications for GMII, MII, RMII, SMII, TBI, RGMII, and RTBI.

2.6.3.1

GMII Timing Specifications

This section describe the GMII transmit and receive AC timing specifications.

2.6.3.1.1

GMII Transmit AC Timing Specifications

The following table provides the GMII transmit AC timing specifications.

The following figure shows the GMII transmit AC timing diagram.

Figure 12. GMII Transmit AC Timing Diagram

Input low current (VIN = GND)

IIL

–15

—

μA1, 2

Output high voltage (LVDD = min, IOH = –1.0 mA)

VOH

2.00

LVDD + 0.3

—

Output low voltage (LVDD =min, IOL = 1.0 mA)

VOL

GND – 0.3

0.40

—

Note:

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

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

Table 25. GMII Transmit AC Timing Specifications

For recommended operating conditions, see Table 3

Parameter

Symbol

Min

Typ

Max

Unit

Note

GTX_CLK clock period

tGTX

7.5

—

8.5

—

GMII data TXD[7:0], TX_ER, TX_EN setup time

tGTKHDV

2.5

—

—ns—

GTX_CLK to GMII data TXD[7:0], TX_ER, TX_EN delay

tGTKHDX

0.5

—

—ns—

GTX_CLK data clock rise time (20%–80%)

tGTXR

—

1.0

—ns—

GTX_CLK data clock fall time (80%–20%)

tGTXF

—

1.0

—ns—

Table 24. RGMII and RTBI DC Electrical Characteristics (continued)

At recommended operating conditions with LVDD =2.5 V

Parameter

Symbol

Min

Max

Unit

Note

GTX_CLK

TXD[7:0]

tGTKHDX

tGTX

tGTXH

tGTXR

tGTXF

tGTKHDV

TX_EN

TX_ER

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