AFBR-57R6APZ Avago Technologies US Inc., AFBR-57R6APZ Datasheet - Page 4

• Manufacturer Part Number: AFBR-57R6APZ
• Description: MM 4/2/1 Gb RoHS W Rate Select
• Manufacturer: Avago Technologies US Inc.

Specifications of AFBR-57R6APZ

• Data Rate: 4.25Gbps
• Wavelength: 850nm
• Applications: Ethernet
• Voltage - Supply: 2.97 V ~ 3.63 V
• Connector Type: LC Duplex
• Mounting Type: SFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Receiver Section
The receiver section includes the Receiver Optical
SubAssembly (ROSA) and the amplification/
quantization circuitry. The ROSA, containing a PIN
photodiode and custom transimpedance amplifier,
is located at the optical interface and mates with the
LC optical connector. The ROSA output is fed to a
custom IC that provides post-amplification and
quantization.
Fibre Channel Rate Select (Rate_Select)
The AFBR-57R6APZ transceiver contains a
parametric optimiza-tion circuit to insure compliant
performance for 1.0625 Gb/s, 2.125 Gb/s and 4.25
Gb/s data rates. When Rate_Select (pin 7) is asserted,
the transceiver receiver bandwidth is optimized for
4.25G/2.125G performance as defined in document
SFF-8079 Section 5.1 (currently on Draft 1.7) and
ANSI FC-PI-2. When deasserted (or open),
performance is optimized for 2.125G/1.065G
performance per SFF-8074i and SFF-8079.
Rate_Select can also be asserted via the two-wire
serial interface (address A2h, byte 110, bit 3) and
monitored (address A2h, byte 110, bit 4).
The contents of A2h, byte 110, bit 3 are logic OR’d
with hardware Rate_Select (pin 7) to control
transmitter operation.
Receiver Loss of Signal (Rx_LOS)
The post-amplification IC also includes transition
detection circuitry which monitors the ac level of
incoming optical signals and provides a TTL/CMOS
compatible status signal to the host (pin 8). An
adequate optical input results in a low Rx_LOS
output while a high Rx_LOS output indicates an
unusable optical input. The Rx_LOS thresholds are
factory set so that a high output indicates a definite
optical fault has occurred. Rx_LOS can also be
monitored via the two-wire serial interface (address
A2h, byte 110, bit 1).
Functional Data I/O
The AFBR-57R6APZ interfaces with the host circuit
board through twenty I/O pins (SFP electrical
connector) identified by function in Table 2. The
board layout for this interface is depicted in Figure 6.
The AFBR-57R6APZ high speed transmit and receive
interfaces require SFP MSA compliant signal lines on
the host board. To simplify board requirements, biasing
resistors and ac coupling capacitors are incorporated
into the SFP transceiver module (per SFF-8074i) and
hence are not required on the host board. The
Tx_Disable, Tx_Fault, Rx_LOS, and Rate_Select lines
4
require TTL lines on the host board (per SFF-8074i) if
used. If an application chooses not to take advantage of
the functionality of these pins, care must be taken to
ground Tx_Disable (for normal operation).
Figure 2 depicts the recommended interface circuit
to link the AFBR-57R6APZ to supporting physical
layer ICs. Timing for MSA compliant control signals
implemented in the transceiver are listed in Figure 4.
Application Support
An Evaluation Kit and Reference Designs are available
to assist in evaluation of the AFBR-57R6APZ. Please
contact your local Field Sales representative for
availability and ordering details.
Caution
There are no user serviceable parts nor maintenance
requirements for the AFBR-57R6APZ. All mechanical
adjustments are made at the factory prior to shipment.
Tampering with, modifying, misusing or improperly
handling the AFBR-57R6APZ will void the product
warranty. It may also result in improper operation and
possibly overstress the laser source. Performance
degradation or device failure may result. Connection of
the AFBR-57R6APZ to a light source not compliant with
ANSI FC-PI or IEEE 802.3 specifications, operating
above maximum operating conditions or in a manner
inconsistent with it’s design and function may result in
exposure to hazardous light radiation and may
constitute an act of modifying or manufacturing a laser
product. Persons performing such an act are required
by law to re-certify and re-identify the laser product
under the provisions of U.S. 21 CFR (Subchapter J) and
TUV.
Ordering Information
Please contact your local field sales engineer or one of
Avago Technologies franchised distributors for ordering
information. For technical information, please visit
Avago Technologies’ WEB page at www.Avago.com or
contact Avago Technologies Semicon-ductor Products
Customer Response Center at 1-800-235-0312. For
information related to SFF Committee documentation
visit www.sffcommittee.org.
Regulatory Compliance
The AFBR-57R6APZ complies with all applicable laws
and regulations as detailed in Table 1. Certification
level is dependent on the overall configuration of the
host equipment. The transceiver performance is offered
as a figure of merit to assist the designer.