KSZ8895FLXC View Datasheet(PDF) - Microchip Technology

Part Name

Description

MFG CO.

KSZ8895FLXC

Integrated 5-Port 10/100 Managed Ethernet Switch with MII/RMII Interface

Microchip Technology 

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KSZ8895MQX/RQX/FQX/MLX

FIGURE 3-4:

RECOMMENDED 1.2V POWER CONNECTION USING INTERNAL 1.2V LDO

CONTROLLER

ȍ

3.3V

S

Nȍ

Nȍ

D

G

126

9,18,24,37

VDDAT

59,77,100

VDDIO

125

VDDAR

VDDC

1.2V

47μF

3,15,31

50,89,117

2,6,12,16,21,27,30,34,127

49,58,76,88,99,116

3.2.2 USING EXTERNAL 1.2V LDO REGULATOR

The KSZ8895MQX/RQX/FQX/MLX can use an external 1.2V LDO regulator too. When use an external 1.2V LDO reg-

ulator solution, the Pin 126 should be pulled down by the pull-down resistor to disable the internal 1.2V LDO controller.

There is no a power sequence request if all power rails voltage are ready after the power-up reset done.

Using the external 1.2V LDO regulator is illustrated in Figure 9. The number of capacitors, values of capacitors, and

exact placement of components will depend on the specific design.

FIGURE 3-5:

RECOMMENDED 1.2V POWER CONNECTION USING AN EXTERNAL 1.2V

REGULATOR

Nȍ

126

9,18,24,37

VDDAT

59,77,100

VDDIO

1.2V

125

VDDAR

3,15,31

VDDC

50,89,117

2,6,12,16,21,27,30,34,127

49,58,76,88,99,116

DS00002246A-page 26

 2016 Microchip Technology Inc.

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