S2004

The S2004 facilitates high-speed serial transmission of data in a variety of applications including Gigabit Ethernet, Fibre Channel, serial backplanes, and proprietary point to point links. The chip provides four separate transceivers which can be operated individually or locked together for an aggregate data capacity of >4 Gbps.

Each bi-directional channel provides 8B/10B coding/ decoding, 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 retiming on the four independent data inputs. The transmitter and receiver each support differential PECL-compatible I/O for copper or fiber optic component interfaces with excellent 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 S2004 and S2204 in a Gigabit Ethernet application. Figure 2 combines the S2004 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.