®
DEVICE
SPECIFICATION
FIBRE CHANNEL/GIGABIT ETHERNET TRANSCEIVER
FIBRE CHANNEL/GIGABIT ETHERNET TRANSCEIVER
GENERAL DESCRIPTION
S2070
S2070
FEATURES
• 1062 Mbps (Fibre Channel) line rates
• 1250 Mbps (Gigabit Ethernet) line rates
• Half and full VCO output rates
• Functionally compliant to IEEE 802.3z Gigabit
Ethernet Specification and the ANSI X3T11
Fibre Channel Specification
• Transmitter incorporating phase-locked loop
(PLL) clock synthesis from low speed reference
• Receiver PLL provides clock and data recovery
• 10-bit parallel TTL compatible interface
• Low-jitter serial LVPECL compatible interface
• Local loopback
• Single +3.3 V supply, 620 mW power dissipation
• 64 PQFP package
• Continuous downstream clocking from receiver
• Drives 30 m of Twinax cable directly
The S2070 transmitter and receiver chip facilitates
high speed serial transmission of data over fiber op-
tic, coax, or twinax interfaces. The device conforms
to the requirements of the IEEE 802.3z Gigabit
Ethernet Specification and the ANSI X3T11 Fibre
Channel specification, and runs at 1062 Mbps or
1250 Mbps data rates with an associated 10-bit data
word.
The chip provides parallel-to-serial and serial-to-par-
allel conversion, clock generation/recovery, and
framing for block encoded data. The on-chip transmit
PLL synthesizes the high-speed clock from a low-
speed reference. The on-chip receive PLL performs
clock recovery and data re-timing on the serial bit
stream. The transmitter and receiver each support
differential LVPECL compatible I/O for copper or fi-
ber optic component interfaces with excellent signal
integrity. Local loopback mode allows for system di-
agnostics. The chip requires a +3.3 V power supply
and dissipates approximately 620 mW under typical
conditions.
The S2070 can be used for a variety of applications
including Fibre Channel, serial backplanes, and pro-
prietary point-to-point links. Figure 1 shows a typical
configuration incorporating the chip.
APPLICATIONS
•
•
•
•
Workstation
Frame buffer
Switched networks
Data broadcast environments
• Proprietary extended backplanes
Figure 1. System Block Diagram
Gigabit
Ethernet/
Fibre
Channel
Controller
S2070
Optical
Tx
Optical
Rx
Optical
Rx
S2070
Optical
Tx
Gigabit
Ethernet/
Fibre
Channel
Controller
March 7, 2001 / Revision G
1
AMCC [ APPLIED MICRO CIRCUITS CORPORATION ]
