EP2SGX60CF780C4N Datasheet, PDF (20/316 Pages) Altera Corporation – Support for numerous single-ended and differential I/O standards

Transceivers
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Refer to the Stratix II GX Transceiver Architecture Overview chapter in
volume 2 of the Stratix II GX Handbook.
The output buffer, as shown in Figure 2–8, is directly driven by the
high-speed data serializer and consists of a programmable output driver,
a programmable pre-emphasis circuit, a programmable termination, and
a programmable V_CM.
Figure 2–8. Output Buffer
Serializer
Output Buffer
Programmable
Output
Driver
Programmable
Pre-Emphasis
Programmable
Termination
Output
Pins
Programmable Output Driver
The programmable output driver can be set to drive out differentially
200 to 1,400 mV. The differential output voltage (V_OD) can be changed
dynamically, or statically set by using the ALT2GXB megafunction or
through I/O pins.
The output driver may be programmed with four different differential
termination values:
■ 100 Ω
■ 120 Ω
■ 150 Ω
■ External termination
2–12
Stratix II GX Device Handbook, Volume 1
Altera Corporation
October 2007