ep2sgx30c Altera Corporation, ep2sgx30c Datasheet - Page 21

• Manufacturer Part Number: ep2sgx30c
• Description: Stratix Ii Gx Device Data Sheet
• Manufacturer: Altera Corporation

Altera Corporation
October 2007
Differential signaling conventions are shown in
differential amplitude represents the value of the voltage between the
true and complement signals. Peak-to-peak differential voltage is defined
as 2 × (V
mode voltage is the average of V
Figure 2–9. Differential Signaling
Programmable Pre-Emphasis
The programmable pre-emphasis module controls the output driver to
boost the high frequency components, and compensate for losses in the
transmission medium, as shown in
statically using the ALT2GXB megafunction or dynamically through the
dynamic reconfiguration controller.
Figure 2–10. Pre-Emphasis Signaling
V
= V
OD
high
(Differential)
Complement
−
V
low
HIGH
True
– V
Single-Ended Waveform
Differential Waveform
LOW
Pre-Emphasis % = (
) = 2 × single-ended voltage swing. The common
V
MAX
high
+V
Stratix II GX Device Handbook, Volume 1
V
V
V
MAX
MIN
OD
Figure
MIN
and V
V
V
− 1) × 100
high
low
+V
2 * V
-
low
2–10. The pre-emphasis is set
OD
.
OD
Figure
Stratix II GX Architecture
2–9. The
-V
OD
+400
0-V Differential
−400
2–13