KSZ8041FTLI Micrel Inc, KSZ8041FTLI Datasheet - Page 36

• Manufacturer Part Number: KSZ8041FTLI
• Description: Physical Layer Transceiver 10/100BASE-FX ( )
• Manufacturer: Micrel Inc
• Type: Transceiverr

Specifications of KSZ8041FTLI

• Number Of Drivers/receivers: 1/1
• Protocol: SMII
• Voltage - Supply: 3.135 V ~ 3.465 V
• Mounting Type: Surface Mount
• Package / Case: 48-TQFP, 48-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 576-3294 - BOARD EVALUATION KSZ8041FTL
• Lead Free Status / RoHS Status: Compliant, Lead free / RoHS Compliant
• Other names: 576-3347

Micrel, Inc.
Reference Circuit for Power and Ground Connections
The KSZ8041TL/FTL/MLL is a single 3.3V supply device with a built-in 1.8V low noise regulator. The power and ground
connections are shown in the following figure and table.
December 2009
Power Pin
V1.8_OUT
VDD_1.8
VDDA_1.8
VDDIO_3.3
VDDA_3.3
Figure 9. KSZ8041TL/FTL/MLL Power and Ground Connections
Pin Number
25, 26
Table 10. KSZ8041TL/FTL/MLL Power Pin Description
4, 5
7, 8
31
6
Pin Type
Output
Input
Input
Input
Input
Description
1.8V supply output from KSZ8041TL/FTL/MLL
Decouple with 22uF and 0.1uF capacitors to ground.
Connect to V1.8_OUT (pin 6) thru ferrite bead.
Decouple with 0.1uF capacitor to ground.
Connect to V1.8_OUT (pin 6) thru ferrite bead.
Decouple with 0.1uF capacitor on each pin to ground.
Connect to board’s 3.3V supply.
Decouple with 22uF and 0.1uF capacitors to ground.
Connect to board’s 3.3V supply thru ferrite bead.
Decouple with 22uF and 0.1uF capacitors to ground.
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KSZ8041TL/FTL/MLL
M9999-120909-1.2