Altera Transceiver SI - Manual (Page 35)

Altera Corporation Getting Started User Guide A–7
June 2006 Transceiver Signal Integrity Development Kit, Stratix II GX Edition
Design
Walkthrough
With
Troubleshooting
and Debugging
Solutions This section walks you through a design example and also provides
troubleshooting and debugging solutions.
Design Walkthrough
The following steps walk you through an example sequence to run a
PRBS23 with the values of VOD = 2, preemphasis = 1, DC gain = 1, and
equalization = 3.
1
Please refer to “Stratix II GX Transceiver Signal Integrity
Development Board” on page 2–3 for all component number
references.
1. Power up the board.
2. If the on-board clock is used, ensure that the slide switch (S9) is in
the oscillator position (OSC).
3. Set switch 6 of the clock setting DIP switch bank (S8) to OPEN.
4. Set switch 7 of the user DIP switch bank (S7) to OPEN for serial
loopback.
5. To set the pattern generator to PRBS23, set switch 6 of the user DIP
switch bank (S7) to closed and switch 5 to OPEN.
6. Set the VOD, preemphasis, DC gain, and equalization values.
f
Refer to “Write PMA Values” on page A–6 .
7. This is an optional step. Refer to “Read PMA Values” on page A–6
to confirm whether the intended settings are written.
8. Assert the push button switch S2 to reset the data generators and
checkers.
9. Check the status of LED’s D1, D2, and D3. When all three LEDs are
illuminated, the transaction is successful.