Altera DQ (ALTDQ) Uživatelský manuál stáhnout pdf (Strana 11)

Getting Started Page 11

November 2010 Altera Corporation DQ (ALTDQ) and DQS (ALTDQS) Megafunctions

Page 7 of the ALTDQS parameter editor is the Dsqn_padio Port page. Table 6 on

page 11 describes options available on page 7 of the ALTDQS megafunction.

Table 6. DQSn_padio Port Settings

Option Description

Supported Devices

Cyclone II

Cyclone III, Cyclone IV GX

Stratix, Stratix GX,

Stratix II, Stratix II GX, Arria GX, HardCopy II

How do you want to use the

‘dqsn_padio’ port?

Use negative DQS pin as an input during read cycles,

and output during write cycles or a bidirectional signal

for read and write.

If the Allow DQS to be disabled during read post

amble option has been selected on page 3, only Not

used and Output modes options are available.

If Allow DQS to be disabled during read post-amble

option selected on page 3, all modes are available.

Yes Yes No Yes

What is the phase shift when

used in timing analysis?

This is the phase shift amount (0°, 30°, 60°, 90°, 120°)

assumed during timing analysis. This is to compute the

static delay during timing analysis.

Yes Yes No Yes

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 30 31

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Altera DQ (ALTDQ) Uživatelský manuál Strana 11