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S2104
QUAD FIBRE CHANNEL DEVICE
July 14, 1999 / Revision C
S2104
QUAD FIBRE CHANNEL DEVICE
DEVICE
SPECIFICATION
MAC
(ASIC)
S2004
QUAD
FIBRE
CHANNEL
INTERFACE
MAC
(ASIC)
MAC
(ASIC)
MAC
(ASIC)
TO SERIAL BACKPLANE
S2104
FC INTERFACE
SERIAL BP DRIVER
Figure 1. Typical Quad Fibre Channel Application
FEATURES
1062 MHz (Fibre Channel) operating rate
- 1/2 Rate Operation
Quad Transmitter with phase-locked loop (PLL)
clock synthesis from low speed reference
Quad Receiver PLL provides clock and data
recovery
Internally series terminated TTL outputs
Low-jitter serial PECL interface
Individual local loopback control
JTAG 1149.1 Boundary scan on low speed I/O
signals
Interfaces with coax, twinax, or fiber optics
Single +3.3V supply, 2.5 W power dissipation
Compact 23mm x 23mm 208 TBGA package
APPLICATIONS
Workstation
Frame buffer
Switched networks
Data broadcast environments
Proprietary extended backplanes
GENERAL DESCRIPTION
The S2104 facilitates high-speed serial transmission
of data in a variety of applications including Fibre
Channel, serial backplanes, and proprietary point to
point links. The chip provides four separate trans-
ceivers which can be operated individually for a data
capacity of >4 Gbps.
Each bi-directional channel provides parallel to serial
and serial to parallel conversion, clock generation/
recovery, and framing. The on-chip transmit PLL
synthesizes the high-speed clock from a low-speed
reference. The on-chip quad receive PLL is used for
clock recovery and data re-timing on the four inde-
pendent data inputs. The transmitter and receiver
each support differential PECL-compatible I/O for
copper or fiber optic component interfaces with ex-
cellent signal integrity. Local loopback mode allows
for system diagnostics. The chip requires a 3.3V
power supply and dissipates 2.5 watts.
Figure 1 shows the S2104 and S2004 in a Fibre
Channel application. Figure 2 combines the S2104
with a crosspoint switch to demonstrate a serial
backplane application. Figure 3 is the input/output
diagram. Figures 4 and 5 show the transmit and
receive block diagrams, respectively.
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