High-Speed Differential Interfaces in Cyclone II Devices
Figure 11–8. RSDS Single Resistor Network Note (1)
Cyclone II Device
≤ 1 inch
Resistor Network
LVDS Transmitter
RSDS Receiver
50 Ω
50 Ω
R
= 100 Ω
R
P
L
Note to Figure 11–8:
(1) Rp = 100 Ω.
RSDS Software Support
When designing for the RSDS I/O standard, assign the RSDS I/O
standard to the I/O pins intended for RSDS in the Quartus® II software.
Contact Altera Applications for reference designs.
mini-LVDS Standard Support in Cyclone II Devices
The mini-LVDS specification defines its use in chip-to-chip applications
between the timing controller and the column drivers on display panels.
Cyclone II devices meet the Texas Instruments mini-LVDS Interface
Specification and support the mini-LVDS output standard. Table 11–3
shows the mini-LVDS electrical characteristics for Cyclone II devices.
Table 11–3. mini-LVDS Electrical Characteristics for Cyclone II Devices Note (1)
Symbol
Parameters
Output supply voltage
Differential output voltage
Output offset voltage
Transition time
Condition
Min
2.375
300
Typ
Max
2.625
600
Units
V
VCCIO
2.5
VOD (2)
VOS (3)
Tr / Tf
RL = 100 Ω
RL = 100 Ω
20% to 80%
mV
mV
ps
1125
1250
1375
500
Notes to Table 11–3:
(1) The VOD specifications apply at the resistor network output.
(2) VOD = VOH – VOL
.
(3) VOS = (VOH + VOL) / 2.
Altera Corporation
February 2007
11–9
Cyclone II Device Handbook, Volume 1
ALTERA [ ALTERA CORPORATION ]
