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LAN9252/ML Datasheet(PDF) 29 Page - Microchip Technology

Part # LAN9252/ML
Description  2/3-Port EtherCAT® Slave Controller with Integrated Ethernet PHYs
PDF  329 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

LAN9252/ML Datasheet(HTML) 29 Page - Microchip Technology

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 2015 Microchip Technology Inc.
DS00001909A-page 29
LAN9252
4.0
POWER CONNECTIONS
Figure 4-1 and Figure 4-2 illustrate the device power connections for regulator enabled and disabled cases, respec-
tively. Refer to the device reference schematic and the device LANCheck schematic checklist for additional information.
Section 4.1 provides additional information on the devices internal voltage regulators.
FIGURE 4-1:
POWER CONNECTIONS - REGULATORS ENABLED
+1.8 V to
+3.3 V
VDDCR
Core Logic &
PHY digital
VDD12TX2
Ethernet PHY 1
Analog
1.0 µF
0.1
 ESR
VDD33BIAS
VDD33TXRX1
VSS
VDDCR
Ethernet PHY 2
Analog
VDD12TX1
VDD33TXRX2
Ethernet Master
Bias
IO Pads
To PHY1
Magnetics
To PHY2
Magnetics
Note: Bypass and bulk caps as needed for PCB
VDDIO
VDD33
+3.3 V
+3.3 V
470 pF
Crystal Oscillator
VSS
PLL
(exposed pad)
(or separate 2.5V)
(or separate 2.5V)
VDDIO
VDDIO
VDDIO
VDDIO
VDDCR
OSCVDD12
OSCVSS
+3.3 V
(IN)
+1.2 V
(OUT)
Internal 1.2 V Core
Regulator
enable
+3.3 V
(IN)
+1.2 V
(OUT)
Internal 1.2 V Oscillator
Regulator
VSS
enable
REG_EN
(Pin 6)



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