eldo_user

IBIS Models Support in Eldo
Example 2—Pseudo-Differential Tx-Rx System
Simulation Results
Figure 17-19. Single-Ended Tx-Rx System Simulation Results
Ringing is clearly observed in the waveform at the receiver side. This is due to the mismatch
between the TL Z0 and the Rx input impedance (ringing also means a mismatch exists between
the Tx output impedance and the TL Z0). However, the Rx recognizes the signal logic levels
and the digital output (d_receive) is given correctly without any undesired transitions due to the
received signal ringing.
Related Topics
Example 2—Pseudo-Differential Tx-Rx System
IBIS Examples
Example 2—Pseudo-Differential Tx-Rx System
Netlist file: diff_tx_rx.cir
IBIS file: diffsource.ibs
This example deals with a simple arrangement of a pseudo-differential output buffer (Tx),
transmission line and a pseudo-differential input buffer (Rx). Same as example#1, this
arrangement can be used for transmission line analysis mismatch as well as to assure that the
differential Rx correctly recognizes the logic associated with the received differential signal
levels.
792
Eldo® User's Manual, 15.3