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參數(shù)資料
| 型號(hào)： | E-1110 |
| 英文描述： | E-1110 10/100/1000 Mbits/s Ethernet MAC preliminary technical manual 4/01 |
| 中文描述： | 電子1110 10/100/1000 Mbits /秒以太網(wǎng)MAC初步的技術(shù)手冊(cè)4 / 01 |
| 文件頁(yè)數(shù)： | 67/108頁(yè) |
| 文件大小： | 577K |
| 代理商： | E-1110 |
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PHY Interface Signals
3-23
E1110_PHY_RCLK
PHY Receive Clock
Input
In GMII mode, this is a GMII Receive 125 MHz clock
Input signal. It is used to synchronize the data in GMII
mode. In MII mode, this is a MII Receive 2.5/25 MHz
clock Input signal. It is used to synchronize the data in
MII mode. In TBI mode, this is a TBI Receive 125 MHz
clock input signal. It is used to synchronize the data in
1000BASE-SX/CX/LX TBI mode. The even byte lane
data is clocked out of the Physical Medium Attachment
(PMA) on this clock.
In the test scan mode, this clock acts as a scan clock and
is also output on MII_RCLK for scan mode testing of
E-110 core.
E1110_TXD[7:0]
MII/GMII/TBI Transmit Data
Output
E1110_TXD[7:0] is the transmit data to the PHY and is
synchronous to the GMII/TBI or MII clock. TXDATA[7] is
the most-signicant bit. In the MII mode, only the
E1110_TXD[3:0] signals are valid. In the TBI mode, the
data is 10 bits wide with E1110_TXD[9] as the MSB.
E1110_TXD[8]/E1110_TX_EN
Transmit Enable
Output
E1110_TX_EN is the active-HIGH transmit enable signal.
When it is asserted, the data on TXD[7:0] is encoded and
transmitted over the twisted-pair cable. This signal is
shared with bit 8 of the TBI transmit stream in the
MII/GMII/TBI mode of operation.
E1110_TXD[9]/E1110_TX_ER
Transmit Error
Output
E1110_TX_ER is an active-HIGH signal. When it is
asserted, it indicates an error to the PHY device. The
PHY then sends a “bad code” indication over the cable.
This signal is shared with bit 9 of the TBI transmit stream
in the MII/GMII/TBI mode of operation.
E1110_RXD[7:0]
MII/GMII/TBI Receive Data
Input
E1110_RXD[7:0] is the receive data from the PHY and is
synchronous to the GMII or MII clock. E1110_RXD[7] is
the most-signicant bit. In the MII mode, only
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