參數(shù)資料
型號(hào)： C3ENPB0-DS
英文描述： 4 Mbit (512 Kbit x 8) ZEROPOWER® SRAM
中文描述： ? - 3E的網(wǎng)絡(luò)處理器的數(shù)據(jù)資料硅修訂買0
文件頁數(shù)： 36/114頁
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代理商： C3ENPB0-DS
36
CHAPTER 2: SIGNAL DESCRIPTIONS
C3ENPA1-DS/D REV 03
MOTOROLA GENERAL BUSINESS INFORMATION
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.
0
Port 1 Tx and Rx
Port 1 Tx
1
Port 2 Tx and Rx
Port 1 Rx
Cluster
0
Cluster
1
Cluster
2
Cluster
3
Port 1
Port 2
}
}
Tx
Tx
Rx
Rx
Single Cluster Mode
Pin Configuration
Port 1
}
Tx
Tx
nc
Rx
Rx
nc
Two Cluster Mode
Pin Configuration
nc = not connected
Cluster
0
Cluster
1
Cluster
2
Cluster
3
NOTE: Cluster 2 & 3 are Internal Loopback Only.
NOTE: Cluster 2 & 3 are Internal Loopback Only.
F
n
.
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