KS8721BL A4 Micrel Inc, KS8721BL A4 Datasheet - Page 3

• Manufacturer Part Number: KS8721BL A4
• Description: 10/100 Base-TX/FX Physical Layer Transceiver, Single 3.3V Supply, 48-LQFP
• Manufacturer: Micrel Inc

Specifications of KS8721BL A4

• Lead Free Status / Rohs Status: Not Compliant

Revision History
February 2005
KS8721BL/SL
Revision Date
0.90
1.0
1.1
1.2
1/12/04
3/06/04
5/17/04
1/21/05
Summary of Changes
Created.
Initial release. Change to new format. Add part-ordering information. Editorial changes on pin description,
RMII, and media converter operation. Update circuit design, reset timing, thermal resistance, electrical
characteristics, and strapping option circuit.
Added BLI product information.
MDIO Pull-up resistor value changed to 4.7kΩ.
Added note on strapping option pins.
Updated bits 1b.0 - 1b.7 to self clearing.
Updated electrical characteristics.
Updated reference schematic for strapping option configuration to 3.3V.
Crystal spec updated to 40Ω series resistance.
Added additional magnetics to qualified transformer table.
Add 2 lead-free part options.
Added recommended reset circuit.
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M9999-022105
Micrel