EP2C20F256C8N Datasheet, PDF (331/470 Pages) Altera Corporation – Cyclone II Device Handbook, Volume 1

High-Speed Differential Interfaces in Cyclone II Devices
Figure 11–8. RSDS Single Resistor Network Note (1)
Cyclone II Device
LVDS Transmitter
≤ 1 inch
Resistor Network
RP
50 Ω
50 Ω
RSDS Receiver
RL = 100 Ω
Note to Figure 11–8:
(1) R_p = 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
Condition
V_CCIO
V_OD (2)
V_OS (3)
T_r / T_f
Output supply voltage
Differential output voltage
Output offset voltage
Transition time
R_L = 100 Ω
R_L = 100 Ω
20% to 80%
Notes to Table 11–3:
(1) The V_OD specifications apply at the resistor network output.
(2) V_OD = V_OH – V_OL.
(3) V_OS = (V_OH + V_OL) / 2.
Min
2.375
300
1125
Typ
2.5
1250
Max
2.625
600
1375
500
Units
V
mV
mV
ps
Altera Corporation
February 2007
11–9
Cyclone II Device Handbook, Volume 1