MPC8572ECVTATLD datasheet(40/140 Pages) FREESCALE

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MPC8572E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 4

Freescale Semiconductor

Ethernet: Enhanced Three-Speed Ethernet (eTSEC)

Figure 18 shows the RGMII and RTBI AC timing and multiplexing diagrams.

Figure 18. RGMII and RTBI AC Timing and Multiplexing Diagrams

8.2.7

RMII AC Timing Specifications

This section describes the RMII transmit and receive AC timing specifications.

8.2.7.1

RMII Transmit AC Timing Specifications

Table 34 shows the RMII transmit AC timing specifications.

Table 34. RMII Transmit AC Timing Specifications

At recommended operating conditions with LVDD/TVDD of 2.5/ 3.3 V ± 5%.

Parameter/Condition

Symbol 1

Min

Typ

Max

Unit

TSECn_TX_CLK clock period

tRMT

15.0

20.0

25.0

TSECn_TX_CLK duty cycle

tRMTH

TSECn_TX_CLK peak-to-peak jitter

tRMTJ

—

250

Rise time TSECn_TX_CLK (20%–80%)

tRMTR

1.0

—

2.0

Fall time TSECn_TX_CLK (80%–20%)

tRMTF

1.0

—

2.0

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 PHY)

tSKRGT

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