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PDP83TG720SWCSTQ1 Datasheet(PDF) 41 Page - Texas Instruments

Part # PDP83TG720SWCSTQ1
Description  DP83TG720S-Q1 1000BASE-T1 Automotive Ethernet PHY
PDF  199 Pages
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

PDP83TG720SWCSTQ1 Datasheet(HTML) 41 Page - Texas Instruments

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7.4.8.2 Serial Gigabit Media Independent Interface
The Serial Gigabit Media Independent Interface (SGMII) provides a means for data transfer between MAC and
PHY with significantly less signal pins (4 pins) compared to RGMII (12 pins). SGMII uses low-voltage differential
signaling (LVDS) to reduce emissions and improve signal quality.
The DP83TG720S-Q1 SGMII is capable of operating in 4-wire mode. In 4-wire operation, two differential pairs
are used to transmit and receive data. Clock and data recovery are performed in the MAC and in the PHY in the
case of the RX and TX directions, respectively.
SGMII Auto-Negotitation can be disabled by setting bit[0] = 0b0 in the SGMII Configuration Register (SGMIICTL,
address 0x608).
The SGMII signals are summarized in Table 7-12.
Table 7-12. SGMII Signals
FUNCTION
PINS
Data Signals
TX_M, TX_P
RX_M, RX_P
Figure 7-17. SGMII Connections
www.ti.com
DP83TG720S-Q1
SNLS604 – SEPTEMBER 2020
Copyright © 2020 Texas Instruments Incorporated
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