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FTLX8561E2 Product Specification – October 2008
© Finisar Corporation – October 2008 Rev B Page 2
I. Pin Descriptions
Signal Name Level I/O Pin No. Description
Management and Monitoring Ports
MDIO Open Drain I/O 17 Management Data I/O. Requires
external 10 - 22 kΩ pull-up to the
APS on host.
MDC 1.2 V
CMOS
I 18 Management Data Clock Input
PRTAD4 1.2 V
CMOS
1 19 Port Address Input bit 4
PRTAD3 1.2 V
CMOS
I 20 Port Address Input bit 3
PRTAD2 1.2 V
CMOS
I 21 Port Address Input bit 2
PRTAD1 1.2 V
CMOS
I 22 Port Address Input bit 1
PRTAD0 1.2 V
CMOS
I 23 Port Address Input bit 0
LASI Open Drain O 9 Link Alarm Status Interrupt Output.
Open Drain Compatible Output with
10 - 20 kΩ pull-up on host.
Logic high = Normal Operation
Logic low = Status Flag Triggered
RESET Open Drain I 10 Reset Input.
Open Drain Compatible Input with
22 kΩ pull-up to APS internal to
transponder.
Logic high = Normal Operation
Logic low = RESET
Vendor Specific 11,15,16,24 Vendor Specific Pins.
Leave unconnected when not used.
TX ON/OFF Open Drain I 12 TX ON/OFF Input.
Open Drain Compatible Input with
22 kΩ pull-up to APS internal to
transponder.
Logic high = Transmitter On
Logic low = Transmitter Off
MOD DETECT O 14 Pulled low inside transponder
through a 1 kΩ resistor to Ground
Transmit Functions
Reserved
Reserved
I
I
68
67
Reserved For Future Use
Reserved For Future Use
TX LANE 3–
TX LANE 3+
I
I
65
64
Module XAUI Input Lane 3–
Module XAUI Input Lane 3+
TX LANE 2–
TX LANE 2+
I
I
62
61
Module XAUI Input Lane 2–
Module XAUI Input Lane 2+
TX LANE 1–
TX LANE 1+
I
I
59
58
Module XAUI Input Lane 1–
Module XAUI Input Lane 1+
TX LANE 0–
TX LANE 0+
AC-coupled,
Internally biased
differential
XAUI
I
I
56
55
Module XAUI Input Lane 0–
Module XAUI Input Lane 0+