IP101ALF-DS-R02 datasheet(26/36 Pages) ETC2

Part #	IP101ALF-DS-R02

Description	Single port 10/100 Fast Ethernet Transceiver

PDF	36 Pages

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Manufacturer	ETC2 [List of Unclassifed Manufacturers]

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26 / 36 page

IP101A LF

Data Sheet

Flexible Clock Source

Pin1

COL/RMII

Pin44

MII/SNIB

Function

RMII, ext 50MHz osc clk in to pin7

RMII, 25MHz crystal or osc from X1,X2; 50MHz clk out to pin16. (Please refer

to the following figure for our recommened application circuit.)

MII, 25MHz crystal or osc from X1,X2

SNI, 25MHz crystal or osc from X1,X2

While pin1=1 and pin44=0 has been selected, 50MHz clock will be provided by IP101A LF in RMII mode.

We suggest the application circuit as the following :

Buffer

IP101A

25M

Other PHY

CPU/Switch/MAC

Pin16

Pin7

Pin46

Pin47

50MHz colck

For this configuration, RMII reference clock for IP101A LF is from pin7. Clock skew could be eliminated by

adding an external buffer and placing equal trace lengths between buffer outputs and each chip.

Oct 22, 2007

26/36

IP101A LF-DS-R12

IP101ALF-DS-R02 Datasheet(PDF) 26 Page - List of Unclassifed Manufacturers