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Overview
The AFCT-570xZ family is compliant with both IEEE
802.3Z (1000BASE-LX) and Fibre Channel 100-SM-LC-L.
It also complies with the SFP Multi-Source Agreement
(MSA) speci cation. These transceivers are intended for
premise, public and access networking applications.
They are quali ed in accordance with GR-468-CORE,
and transmit data over single-mode (SM) ber for a link
distance of 10 km, in excess of the standard.
The AFCT-5705Z family of optical transceivers adds
digital diagnostic monitoring to standard SFP function-
ality, enabling fault isolation, components monitoring
and failure prediction capabilities.
General Features
The AFCT-570xZ is compliant to 1 GbE and 1G FC speci-
cations. This includes speci cations for the signal
coding, optical ber and connector types, optical and
electrical transmitter characteristics, optical and elec-
trical receiver characteristics, jitter characteristics, and
compliance testing methodology for the aforemen-
tioned.
This transceiver is capable of implementing both Single
Mode (SM) and Multimode (MM) optical ber applica-
tions in that order of precedence in the event of con-
icting speci cations. In addition, the SM link type
exceeds the 2 m to 5 km 1000BASE-LX speci cation by
achieving compliance over 2 m to 10 km. The MM link
type is expected to meet the 62.5 µm MMF speci cation
when used with an “o set launch” ber.
text
Photo-Detector
Amplification
&
Quantization
Laser
Laser Driver &
Safety Circuit
Electrical Interface
RD+ (Receive Data)
RD- (Receive Data)
Rx Loss Of Signal
MOD-DEF2 (SDA)
TX_DISABLE
TD+ (Transmit Data)
TD- (Transmit Data)
TX_FAULT
MOD-DEF0
MOD-DEF1 (SCL)
Receiver
Transmitter
Optical Interface
Light from Fiber
Light to Fiber
Controller & Memory
Figure 1. Transceiver Functional Diagram
SFP MSA Compliance
The product package is compliant with the SFP MSA with
the LC connector option. The SFP MSA includes speci ca-
tions for mechanical packaging and performance as well
as dc, ac and control signal timing and performance.
The power supply is 3.3 V dc.
The High Speed I/O (HSIO) signal interface is a Low
Voltage Di erential type. It is ac coupled and terminated
internally to the module. The internal termination is a
100 Ohm di erential load.
Installation
The AFCT-570xZ can be installed in or removed from
any MSA-compliant Pluggable Small Form Factor (SFP)
port regardless of whether the host equipment is oper-
ating or not. The module is simply inserted, electrical-
interface rst, under nger-pressure. Controlled hot-
plugging is ensured by 3-stage pin sequencing at the
electrical interface. This printed circuit board card-edge
connector is depicted in Figure 2.
As the module is inserted, rst contact is made by the
housing ground shield, discharging any potentially
component-damaging static electricity. Ground pins
engage next and are followed by Tx and Rx power sup-
plies. Finally, signal lines are connected. Pin functions
and sequencing are listed in Table 2.
