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XFP MSA – Electrical Reference Model<br />
Finisar<br />
■ Previous Transceiver Designs Will Not Meet Optical Jitter Specs<br />
�� Host Board Jitter Contribution at <strong>10</strong> <strong>Gb</strong>/s is Too Large<br />
■ Design Assumes A Signal Conditions (CDR) in bothTX and RX Paths<br />
■ Goal is support of 8 – 12” on FR-4 host boards.<br />
Electrical<br />
Compliance<br />
Points<br />
Host<br />
ASIC<br />
D<br />
A<br />
Host Board<br />
<strong>10</strong> <strong>Gb</strong>“XFI”<br />
Interface<br />
8–12”FR-4<br />
C’<br />
B’<br />
C<br />
B<br />
30 pin TYCO SFP<br />
Style Connector<br />
RX<br />
CDR<br />
TX<br />
CDR<br />
XFP Module<br />
PA ROSA<br />
LDR<br />
TOSA<br />
Optical<br />
Interface<br />
Lew Aronson October 17, 2002
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