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LAN7430 датащи(PDF) 34 Page - Microchip Technology

номер детали LAN7430
подробное описание детали  Low Power PCIe to Gigabit Ethernet Controller with Integrated Ethernet MAC / PHY
PDF  77 Pages
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производитель  MICROCHIP [Microchip Technology]
домашняя страница  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

LAN7430 датащи(HTML) 34 Page - Microchip Technology

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LAN7430/LAN7431
DS00002631D-page 34
 2018-2019 Microchip Technology Inc.
• The 125MHz clock is provided from an external clock source.
• The LAN7431 can output a 25MHz reference Clock that can be converted for generating the RGMII TXC Signal.
Table 6-1 describes the RGMII signals. Refer to the RGMII Version 2.0 Specification for more detailed information.
The LAN7431 RGMII pin connections to a MAC are detailed in Figure 6-1.
TABLE 6-1:
RGMII SIGNAL DEFINITION
RGMII Signal
Name
Pin Type
(with respect to LAN7431)
Pin Type
(with respect to MAC)
Description
TXC
Output
Input
Transmit Reference Clock
(125MHz for 1000Mbps, 25MHz for 100
Mbps, 2.5MHz for 10 Mbps)
TX_CTL
Output
Input
Transmit Control
TXD[3:0]
Output
Input
Transmit Data [3:0]
RXC
Input
Output
Receive Reference Clock
(125MHz for 1000Mbps, 25MHz for 100
Mbps, 2.5MHz for 10 Mbps)
RX_CTL
Input
Output
Receive Control
RXD[3:0]
Input
Output
Receive Data [3:0]
FIGURE 6-1:
RGMII SIGNAL DIAGRAM
TXC
TX_CTL
TD[3:0]
RXC
RX_CTL
RXD[3:0]
ETH Ref CLK
LAN7431 MAC Interface
MAC Interface
TXC
TX_CTL
TXD[3:0]
RXC
RX_CTL
RXD[3:0]
CLK125
RGMII
OSC
125MHz



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