C5C5EDELTA-RMSLASHD datasheet(36/114 Pages) NXP

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CHAPTER 2: SIGNAL DESCRIPTIONS

C3EN

Gigabit Ethernet (GMII) Configuration

Gigabit Ethernet Media Independent Interface (GMII) is configured in one of two ways:

• Use one CP cluster when density is more important than wire-speed performance

because you can then implement up to four Gigabit Ethernet ports per C-3e NP.

• Use two CP clusters for wire-speed performance and additional processing power. You

can implement up to two Gigabit Ethernet ports per C-3e NP.

Table 10 lists the possible CP cluster combinations you can use and Figure 4 shows receive

and transmit pin configurations by cluster. Table 11 lists the signals and pinouts for

Gigabit Ethernet (GMII).

Figure 4 GMII/TBI Transmit and Receive Pin Configurations

Table 10 Transmit and Receive Pin Combinations for Gigabit Ethernet and Fibre Channel

CLUSTER

SINGLE CLUSTER MODE (TBI OR GMII)

TWO CLUSTER MODE (GMII)*

* The Two Cluster Mode column lists typical configurations. Any cluster can be set up to either receive

or transmit. So you could configure a dual cluster mode where cluster 0 receives and cluster 3

transmits.

Port 1 Tx and Rx

Port 1 Tx

Port 2 Tx and Rx

Port 1 Rx

Cluster

Port 1

Port 2

}

Single Cluster Mode

Pin Configuration

Port 1

}

Two Cluster Mode

Pin Configuration

nc = not connected

Cluster

NOTE: Cluster 2 & 3 are Internal Loopback Only.

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

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