OPTICAL INTERFACE
LIGHT FROM FIBER
ELECTRICAL INTERFACE
RECEIVER
RD+ (RECEIVE DATA)
RD—(RECEIVE DATA)
Rx LOSS OF SIGNAL
AMPLIFICATION
& QUANTIZATION
PHOTO-DETECTOR
MOD-DEF2 (SDA)
CONTROLLER & MEMORY
MOD-DEF1 (SCL)
MOD-DEF0
TRANSMITTER
TX_DISABLE
LASER
DRIVER &
SAFETY
TD+ (TRANSMIT DATA)
TD—(TRANSMIT DATA)
TX_FAULT
LIGHT TO FIBER
VCSEL
CIRCUITRY
Figure 1. SFP Block Diagram
Overview
3 2 1
3 2 1
ENGAGEMENT
SEQUENCE
20
19
18
17
16
15
14
13
12
11
VEE
TD–
TD+
VEE
VCC
T
1
2
VEET
The AFBR-570xZ family of optical transceivers are
compliant with the specifications set forth in the
IEEE802.3 (1000BASE-SX), Fibre Channel (100-M5-SN-I,
100-M6-SN-I), and the Small Form-Factor Pluggable
(SFP) Multi-Source Agreement (MSA). This family of
transceivers is qualified in accordance with Telcordia
GR-468-CORE. Its primary application is servicing Gigabit
Ethernet and Fibre Channel links between optical
networking equipment.
TX FAULT
3
TX DISABLE
MOD-DEF(2)
MOD-DEF(1)
MOD-DEF(0)
RATE SELECT
LOS
T
4
T
5
V
CCR
EER
6
V
7
The AFBR-570xZ offers maximum flexibility to designers,
manufacturers, and operators of Gigabit Ethernet
networking equipment. A pluggable architecture allows the
module to be installed into MSA standard SFP ports at any
time – even with the host equipment operating and online.
This facilitates the rapid configuration of equipment to
precisely the user’s needs – reducing inventory costs and
network downtime. Compared with traditional transceivers,
the size of the Small Form Factor package enables higher
port densities.
RD+
RD–
8
9
VEE
VEE
R
R
VEE
R
10
TOP OF BOARD
BOTTOM OF BOARD
(AS VIEWED THROUGH TOP OF BOARD)
Figure 2. Pin description of the SFP electrical interface.
Module Diagrams
Figure 1 illustrates the major functional components of the
AFBR-570xZ. The external configuration of the module is
depicted in Figure 7. Figure 8 depicts the panel and host
board footprints.
2