Altera ALTDQ_DQS2 - Manual (Page 14)

Parameter Editor GUI Setting
CLI Parameter
Description
Name
Legal Values
Name
Legal
Values (1)
Capture Strobe
Capture strobe
type
Single
Differential
Complemen‐
tary
CAPTURE_STROBE_TYPE
single
differen-
tial
complemen-
tary
This setting specifies the
type of capture strobe
(DQS signal from the
external device).
The default value is Single
(
single
).
Use inverted
capture strobe
— INVERT_CAPTURE_
STROBE
true
false
When enabled, this
parameter captures data
with an inverted capture
strobe.
Strobe inversion occurs
from
dqsbusout
(an
output port from the DQS
delay chain block) to the
clock input of the DDIO_
IN block.
This setting is enabled by
default.
DQS phase shift 0 degrees
45 degrees
90 degrees
135 degrees DQS_PHASE_SETTING
0
1
2
3
This setting specifies the
phase shift value for the
DQS delay chain to shift
the incoming strobe in the
data valid window during
read and write operations.
The default value is 90
degrees (
2
).
This setting is for Stratix V
devices only.
Use capture strobe
enable block
— USE_DQS_ENABLE
true
false
This setting enables the
capture strobe enable
block, which allows
control over the preamble
state of the capture strobe.
This setting is disabled by
default.
(1) All CLI parameter values are type string, therefore you must enclose the values in double quotes.
14 ALTDQ_DQS2 Parameter Settings
UG-01089
2014.12.17
Altera Corporation ALTDQ_DQS2 IP Core User Guide
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