KSZ9031RNX Просмотр технического описания (PDF) - Micrel

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KSZ9031RNX

Gigabit Ethernet Transceiver with RGMII Support

Micrel 

Micrel, Inc.

RGMII Signal Diagram

The KSZ9031RNX RGMII pin connections to the MAC are shown in Figure 4.

KSZ9031RNX

Figure 4. KSZ9031RNX RGMII Interface

RGMII Pad Skew Registers

Pad skew registers are available for all RGMII pins (clocks, control signals, and data bits) to provide programming options

to adjust or correct the timing relationship for each RGMII pin. Because RGMII is a source-synchronous bus interface, the

timing relationship needs to be maintained only within the RGMII pin’s respective timing group.

• RGMII transmit timing group pins: GTX_CLK, TX_EN, TXD[3:0]

• RGMII receive timing group pins: RX_CLK, RX_DV, RXD[3:0]

May 14, 2015

23

Revision 2.2

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