Altera Transceiver SI Bedienungsanleitung PDF herunterladen (Seite 31)

Altera Corporation Getting Started User Guide A–3

June 2006 Transceiver Signal Integrity Development Kit, Stratix II GX Edition

7-Segment Display

The 7-segment displays are used to:

■ Display the VOD, pre-emphasis, DC gain, and equalization values

when reading or writing the PMA settings.

f Refer to the “Write and Read PMA values” on page A–6 for more

information.

■ Display the design file name when the system_reset push button

switch is asserted.

■ Display the error count when show_error_count push button

switch is asserted.

1 The VOD values shown by the 7-segment display indicates the

value in mV when multiplied by 100. For example, to show a

VOD of 200mV the 7-segment display shows 02. The display

setting is for a VCCHTX of 1.5 V.

DIP Switches

The DIP switch S7 is used for controlling the different transceiver

parameters. Table A–2 lists the DIP switch names and describes the

individual switch functions. The DIP switch numbers are shown on the

board’s silkscreen.

8 Serial_loopback The LED is ON when serial loopback

is enabled

1D8 AC28

Note to Ta bl e A – 1:

(1) The first, second, and third digits display the approximate error count range.

Table A–1. LED Display (Part 2 of 2)

Number Signal Name Description Width

Board

Reference

Number

Connected

to FPGA Pin

Number

1 2 ... 26 27 28 29 30 31 32 33 34 35 36 37 38

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Altera Transceiver SI Bedienungsanleitung Seite 31