KS8721BL TR Micrel Inc, KS8721BL TR Datasheet - Page 3

• Manufacturer Part Number: KS8721BL TR
• Description: IC TXRX PHY 10/100 3.3V 48LQFP
• Manufacturer: Micrel Inc
• Type: Transceiverr

Specifications of KS8721BL TR

• Number Of Drivers/receivers: 1/1
• Protocol: MII, RMII
• Voltage - Supply: 2.375 V ~ 2.625 V
• Mounting Type: Surface Mount
• Package / Case: 48-LQFP
• For Use With: 576-1007 - BOARD EVAL EXPERIMENT KS8721BL
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: KS8721BLTR

Micrel, Inc.
Revision History
June 2009
Revision
0.9
1.0
1.1
1.2
1.3
01/12/04
03/06/04
05/17/04
01/21/05
06/25/09
Date
Summary of Changes
Data sheet created.
Initial release. Change to new format. Added 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. Added 2 lead-free part options. Added
recommended reset circuit.
Update ordering information.
3
M9999-062509-1.3
KS8721BL/SL