EP3C16F256I7N Altera, EP3C16F256I7N Datasheet - Page 200

• Manufacturer Part Number: EP3C16F256I7N
• Description: Cyclone III
• Manufacturer: Altera

High-Speed Differential Interfaces in Cyclone III Devices
Figure 8–7. Transmitter Output Signal Level Waveforms for RSDS
Note to
(1)
Figure 8–8. RSDS Interface with Dedicated Output Buffer on the Left and Right I/O Banks
8–10
Cyclone III Device Handbook, Volume 1
The p – n waveform is a function of the positive channel (
Figure
Single-Ended Waveform
Differential Waveform (Mathematical Function of Positive & Negative Channel)
8–7:
Cyclone III Device
Dedicated RSDS
Trasnmitter
V
OS
Figure 8–7
Designing with RSDS
No external resistor network is required when using a dedicated RSDS
output buffer.
output buffer on the left and right I/O banks. For a non-dedicated output
buffer on the top and bottom I/O banks, an external resistor network is
required, as shown in
shows the RSDS transmitter output signal waveforms.
V
V
OD
Figure 8–8
OD
50 Ω
50 Ω
Figure
shows the RSDS I/O interface with a dedicated
p
) and the negative channel (
8–9.
100 Ω
V
OD
0 V
p − n (1)
Positive Channel (p) = V
Negative Channel (n) = V
Ground
Altera Corporation-Preliminary
RSDS Receiver
n
).
OH
OL
March 2007