Altera Stratix GX Transceiver - Manual (Page 44)

2–26 Altera Corporation
Stratix GX Transceiver User Guide January 2005
MegaWizard Analog Features
Figure 2–18. MegaWizard Plug-In Manager - ALTGXB (Page 6 of 7) - Transmitter Notes (1) , (2)
Notes to Figure 2–18 :
(1) The Use V
OD
control signal option enables dynamic V
OD
adjustment via the optional tx_vodctrl input port. If
this control signal is not used, set the V
OD
in the MegaWizard Plug-In Manager via the Select the V
OD
control
setting option. The valid values are based on your transmitter termination value and range from 400 to 1,600 mV.
(2) The Use Preemphasis control signal option enables dynamic pre-emphasis control using the optional
tx_preemphasisctrl
input port. If this control signal is not used, set the pre-emphasis in the MegaWizard
Plug-In Manager using the Select the preemphasis control setting. The valid values are 1 through 5, where 1 is the
smallest pre-emphasis value and 5 is the largest. The amount of pre-emphasis is based on your V
OD
values.