MSC7119 datasheet(30/56 Pages) FREESCALE

No. de pieza	MSC7119

Descripción Electrónicos	Low-Cost 16-bit DSP with DDR Controller and 10/100 Mbps Ethernet MAC

PDF	56 Pages

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Fabricante Electrónico	FREESCALE [Freescale Semiconductor, Inc]

Página de inicio	http://www.freescale.com

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MSC7119 10/100 Mbps Ethernet MAC Data Sheet, Rev. 6

Electrical Characteristics

Freescale Semiconductor

2.5.6.2

Transmit Signal Timing

2.5.6.3

Asynchronous Input Signal Timing

Table 22. Transmit Signal Timing

No.

Characteristics

Min

Max

Unit

800

Transmit clock period:

• MII: TXCLK

• RMII: REFCLK

—

801

Transmit clock pulse width high—as a percent of clock period

• MII: RXCLK

• RMII: REFCLK

—

802

Transmit clock pulse width low—as a percent of clock period:

• MII: RXCLK

• RMII: REFCLK

—

805

Transmit clock to TXDn, TX_EN, TX_ER invalid

—

806

Transmit clock to TXDn, TX_EN, TX_ER valid

—

Figure 11. Ethernet Receive Signal Timing

Table 23. Asynchronous Input Signal Timing

No.

Characteristics

Min

Max

Unit

807

• MII: CRS and COL minimum pulse width (1.5

× TXCLK period)

• RMII: CRS_DV minimum pulse width (1.5 x REFCLK period)

—

Figure 12. Asynchronous Input Signal Timing

Valid

Transmit

TX_EN

TXDn

TX_ER

805

806

clock

800

801

802

CRS

COL

807

CRS_DV

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