050_328 Datasheet, PDF (6/15 Pages) Glenair, Inc. – PRODUCT BRIEF

050-328 Product Brief
PCB Mount Transceiver
10 Gbps, 10km, SMF, 3.3V
FUNCTIONAL DESCRIPTION
Figure 2
PCB Mount Transceiver Block Diagram
TRANSMITTER SECTION
Transmit Disable (Tx_Disable)
The transmitter section of the transceiver accepts a TTL and CMOS compatible transmit disable control signal input that
shuts down the transmitter optical output. A high signal disables the transmitter while a low signal allows normal
transceiver operation. Also laser is disabled when TX_Disable is open. In the event of a fault (e.g. eye safety circuit
activated), cycling this control signal resets the module. An internal pull-down resistor enables the transceiver transmitter
unless the host pulls the input high. Host systems should allow a 10ms interval between successive assertions of this
control signal.
Transmit Fault (Tx_Fault)
A catastrophic laser fault will activate the transmitter signal, TX_FAULT, and disable the laser. This signal is an open
collector output (pull-up required on the host board). A low signal indicates normal laser operation and a high signal
indicates a fault. The TX_FAULT will be latched high when a laser fault occurs and is cleared by toggling the
TX_DISABLE input or cycling the power of the transceiver. The transmitter fault condition can also be monitored via the 2-
wire serial interface (address A2, byte 110, bit 2).
©2014 Glenair, Inc.
GLENAIR, INC.
www.glenair.com
REV: 4
∙ 1211 AIR WAY
US Cage Code 06324
∙ GLENDALE, CA 91201-2497 ∙ TEL: [phone]
PAGE 6 of 15
Printed in USA
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