KSZ8721SL Micrel Inc, KSZ8721SL Datasheet - Page 9

• Manufacturer Part Number: KSZ8721SL
• Description: IC TXRX PHY 10/100 3.3V 48-SSOP
• Manufacturer: Micrel Inc
• Type: Transceiverr

Specifications of KSZ8721SL

• Number Of Drivers/receivers: 1/1
• Protocol: IEEE 802
• Voltage - Supply: 3 V ~ 3.6 V
• Mounting Type: Surface Mount
• Package / Case: 48-SSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 576-1630 - BOARD EVALUATION FOR KSZ8721SL
• Lead Free Status / RoHS Status: Compliant, Lead free / RoHS Compliant
• Other names: 576-1031-5; 576-1512-5; 576-1512-5; KSZ8721SL

Micrel, Inc.
Note:
June 2009
Pin Number
1.
44
45
46
47
48
P = Power supply.
Gnd = Ground.
I = Input.
O = Output.
I/O = Bi-directional.
Ipd = Input with internal pull-down.
Ipu = Input with internal pull-up.
Ipd/O = Input with internal pull-down during reset; output pin otherwise.
Ipu/O = Input with internal pull-up during reset; output pin otherwise.
Pin Name
VDDPLL
RST#
GND
XO
XI
Type
Gnd
Ipu
O
P
I
(1)
Pin Function
Ground.
XTAL feedback: Used with XI for Xtal application.
Crystal Oscillator Input: Input for a crystal or an external 25MHz clock.
If an oscillator is used, XI connects to a 3.3V tolerant oscillator, and X2 is a no-connect.
Analog PLL 2.5V power supply. See “Circuit Design Ref. for Power Supply” section for
details.
Chip Reset. Active low, minimum of 50µs pulse is required.
9
M9999-062509-1.3
KS8721BL/SL