Features: • 1250 MHz (Gigabit Ethernet) operating rate - 1/2 Rate Operation• IEEE 802.3z Gigabit Ethernet Compatible• Quad Transmitter with phase-locked loop (PLL) clock synthesis from low speed reference• Quad Receiver PLL provides clock and data recovery• Internally...
S2204: Features: • 1250 MHz (Gigabit Ethernet) operating rate - 1/2 Rate Operation• IEEE 802.3z Gigabit Ethernet Compatible• Quad Transmitter with phase-locked loop (PLL) clock synthesis ...
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Parameter |
Min |
Typ |
Max |
Units |
Storage Temperature |
-65 |
|
150 |
° C |
Voltage on VDD with Respect to GND |
-0.5 |
|
+5.0 |
V |
Voltage on any TTL Input Pin |
-0.5 |
|
3.47 |
V |
Voltage on any PECL Input Pin |
0 |
|
VDD |
V |
TTL Output Sink Current |
|
|
8 |
mA |
TTL Output Source Current |
|
8 |
mA | |
High Speed PECL Output Source Current |
|
|
25 |
mA |
ESD Sensitivity 1 |
Over 500 V |
The S2204 facilitates high-speed serial transmission of data in a variety of applications including Gigabit Ethernet, serial backplanes, and proprietary point to point links. The chip provides four separate transceivers 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 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 S2204 and S2004 in a Gigabit Ethernet application. Figure 2 combines the S2204 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.