ep3c120f780c8nes Altera Corporation, ep3c120f780c8nes Datasheet - Page 197

• Manufacturer Part Number: ep3c120f780c8nes
• Description: Cyclone Iii Device Family
• Manufacturer: Altera Corporation

Figure 8–2. Typical LVDS Application
Altera Corporation-Preliminary
March 2007
Transmitting Device
txout -
txout +
f
50 Ω
50 Ω
For LVDS data rates in Cyclone III devices with different speed grades,
refer to the Cyclone III Device Datasheet: DC and Switching Characteristics
chapter in volume 2 of the Cyclone III Device Handbook.
Figure 8–2
Cyclone III dedicated transmitter in which the source of the data is an
LVDS transmitter. These LVDS signals are typically transmitted over a
pair of printed circuit board (PCB) traces, but a combination of a PCB
trace, connectors, and cable is a common application setup.
Figure 8–3
the left and right I/O banks.
with external resistor network on the top and bottom I/O banks.
Figure 8–3. LVDS Interface with Dedicated Output Buffer on the Left and Right
I/O Banks
100 Ω
rxin +
rxin -
Cyclone III Device
Dedicated LVDS
Trasnmitter
Input Buffer
shows the LVDS I/O interface with dedicated output buffer on
shows a simple point-to-point LVDS application using a
Cyclone III Device
Cyclone III
Logic
Array
Output Buffer
Figure 8–4
50 Ω
50 Ω
Cyclone III Device Handbook, Volume 1
txout +
txout -
High-Speed I/O Standards Support
shows the LVDS I/O interface
50 Ω
50 Ω
100 Ω
rxin +
rxin -
100 Ω
LVDS Receiver
Receiving Device
8–7