ICS85354 Datasheet, PDF (2/16 Pages) Integrated Circuit Systems – DUAL 2:1/1:2 DIFFERENTIAL -TO-LVPECL/ECL MULTIPLEXER

Integrated
Circuit
Systems, Inc.
PRELIMINARY
ICS85354
DUAL 2:1/1:2
DIFFERENTIAL -TO-LVPECL/ECL MULTIPLEXER
A TYPICAL APPLICATION FOR THE ICS85354
Used to connect a multi-rate PHY with the Tx/Rx pins of an
SFP Module.
Problem Addressed: How to mape the 2 Tx/Rx pairs of the
multi-rate PHY to the single Tx/Rx pair on the SFP Module.
MULTI-RATE PHY
Tx
100BaseFX
Rx
Tx
1000BaseX
Rx
➣
?
➣
SFP MODULE
➣ ^Rx
Tx
MODE 1, 100BASEX CONNECTED TO SFP
All lines are differential pairs, but drawn as single-ended to
simplify the drawing.
Bold red lines
signal path.
MULTI-RATE PHY
Tx
100BaseFX
Rx
CLK_SELA = 0
CLKA0
0
CLKA1
1
QB0
QA
CLKB
are active connections highlighting the
SFP MODULE
Rx
Tx
Tx
1000BaseX
Rx
QB1
ICS85354
CLK_SELB = 0
85354AK
www.icst.com/products/hiperclocks.html
2
REV. B JUNE 8, 2004