參數(shù)資料
型號: MCC501RX200TD0B
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: SPECIALTY MICROPROCESSOR CIRCUIT, PBGA838
封裝: BGA-838
文件頁數(shù): 24/102頁
文件大?。?/td> 1929K
代理商: MCC501RX200TD0B
January 21, 2002— Preliminary Version
C-Port Confidential
28
CHAPTER 2: SIGNAL DESCRIPTIONS
Figure 3 GMII/TBI Transmit and Receive Pin Configurations
The unused CP pins in the two cluster configurations should be wired to ground using a
resistor.
Cluster
0
Cluster
1
Cluster
2
Cluster
3
Port 1
Port 2
Port 3
Port 4
}
Tx
Rx
Single Cluster Mode
Pin Configuration
Port 1
Port 2
}
Tx
Rx
Two Cluster Mode
Pin Configuration
nc
}
nc = not connected
Cluster
0
Cluster
1
Cluster
2
Cluster
3
Table 8 Gigabit Ethernet (GMII/MII) Signals One Cluster Example
Signal Name* Pin # Total
Type
I/O
Label
Signal Description
CPn_0
LVTTL
O
T_CLK
GMII Transmit Clock (125MHz). This clock is used to synchronize the
transmit data.
CPn_1
LVTTL
I
TCLKI
MII transmit clock. Transmit data aligned to this clock input from
phy in MII mode. 25 Mhz in 100BaseT, 2.5 in Mhz in 10BaseT
CPn_2
LVTTL
O
TXD(0)
Transmit Data (byte-wide data, least significant bit)
CPn_3
LVTTL
O
TXD(1)
Transmit Data
CPn_4
LVTTL
O
TXD(2)
Transmit Data
CPn_5
LVTTL
O
TXD(3)
Transmit Data
CPn_6
LVTTL
O
TX_EN
Transmit Enable. When asserted, the data on TXD is encoded and
transmitted on the twisted pair cable.
CPn+1_0
nc
CPn+1_1
LVTTL
I
COL
Collision. Asserted when both RX_DV and TX_EN are valid during
half duplex operation.
CPn+1_2
LVTTL
O
TXD(4)
Transmit Data
CPn+1_3
LVTTL
O
TXD(5)
Transmit Data
CPn+1_4
LVTTL
O
TXD(6)
Transmit Data
CPn+1_5
LVTTL
O
TXD(7)
Transmit Data (byte-wide receive data, most significant bit)
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