KSZ8721BL Micrel Inc, KSZ8721BL Datasheet - Page 3

• Manufacturer Part Number: KSZ8721BL
• Description: IC TXRX PHY 10/100 3.3V 48-LQFP
• Manufacturer: Micrel Inc
• Type: Transceiverr

Specifications of KSZ8721BL

• Number Of Drivers/receivers: 1/1
• Protocol: MII, RMII
• Voltage - Supply: 3 V ~ 3.6 V
• Mounting Type: Surface Mount
• Package / Case: 48-LQFP
• Data Rate: 100Mbps
• No. Of Ports: 1
• Ethernet Type: IEEE 802.3u
• Supply Current: 151mA
• Supply Voltage Range: 3.3V
• Operating Temperature Range: 0°C To +70°C
• Digital Ic Case Style: LQFP
• No. Of Pins: 48
• Interface Type: MII, RMII
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 576-1627 - BOARD EVALUATION FOR KSZ8721BMC576-1626 - BOARD EVALUATION FOR KSZ8721BL
• Lead Free Status / RoHS Status: Compliant, Lead free / RoHS Compliant
• Other names: 576-1028-5; 576-1511-5; 576-1511-5; KSZ8721BL

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