DLL_PHASE_SHIFT
|
String
|
Yes
|
Specifies the DLL phase shift. Values are
0 , 72 , and 90 .
|
DLL_USE_RESET
|
String
|
|
Values are "TRUE" and
"FALSE" .
|
DQS_OE_ASYNC_RESET
|
String
|
No
|
Specifies whether the dqs_areset
port clears, presets, or has no effect on the oe register. Values
are "CLEAR" , "PRESET" , and
"NONE" . If the DQS_OE_ASYNC_RESET
parameter is specified to CLEAR or
PRESET , the dqs_areset port is required.
If omitted, the default is "NONE" .
|
DQS_OE_POWER_UP
|
String
|
No
|
Specifies the power-up condition of the oe
registers. Values are "HIGH" and "LOW" .
If omitted, the default is "LOW" .
|
DQS_OE_REGISTER_MODE
|
String
|
No
|
Specifies whether the oe port is
registered. Values are "REGISTER" and
"NONE" . If omitted, the default is
"NONE" .
|
DQS_OE_SYNC_RESET
|
String
|
No
|
Specifies whether dqs_sreset port
clears, presets, or has no effect on the oe register. Values are
"CLEAR" , "PRESET" , and
"NONE" . If the DQS_OE_SYNC_RESET
parameter is specified to CLEAR or
PRESET , the dqs_sreset port is required.
If omitted, the default is "NONE" .
|
DQS_OPEN_DRAIN_OUTPUT
|
String
|
No
|
Specifies whether to use the open drain mode.
Values are "TRUE" and "FALSE" . If
omitted, the default is "FALSE" .
|
DQS_OUTPUT_ASYNC_RESET
|
String
|
No
|
Specifies whether the dqs_areset
port clears, presets, or has no effect on the DQS output registers.
Values are "CLEAR" , "PRESET" , and
"NONE" . If the DQS_OUTPUT_ASYNC_RESET
port is specified to "CLEAR" or "PRESET" ,
the dqs_areset is required. If omitted, the default is
"NONE" .
|
DQS_OUTPUT_POWER_UP
|
String
|
No
|
Specifies the power-up condition of the DQS
output registers. Values are "HIGH" and
"LOW" . If omitted, the default is
"LOW" .
|
DQS_OUTPUT_SYNC_RESET
|
String
|
No
|
Specifies whether the dqs_sreset
port clears, presets, or has no effect on the DQS output registers.
Values are "CLEAR" , "PRESET" , and
"NONE" . If the DQS_OUTPUT_SYNC_RESET port
is specified to "CLEAR" or "PRESET" ,
dqs_sreset is required. If omitted, the default is
"NONE" .
|
EXTEND_OE_DISABLE
|
String
|
No
|
Specifies whether to use the second
oe register. Values are "TRUE" and
"FALSE" . When EXTEND_OE_DISABLE is set to
"TRUE" , the output drive is held at high impedance for
an extra half clock cycle when oe port goes high.
|
INPUT_FREQUENCY
|
String
|
No
|
Specifies the frequency of the DQS inputs and
system reference clock.
|
NUMBER_OF_DQS
|
Integer
|
Yes
|
Specifies the number of DQS pins that are
implemented.
|
NUMBER_OF_DQS_CONTROLS
|
Integer
|
No
|
Specifies the number of DQS Controls. The
default value is 1 .
|
SIM_INVALID_LOCK
|
Integer
|
No
|
Specifies the number of half-cycles that the
DLL keeps locked after a bad clock is detected. The default is
100000 .
|
SIM_VALID_LOCK
|
Integer
|
No
|
Specifies the number of half-cycles required
before the DLL locks onto the signal. The default value is
1 .
|
TIE_OFF_DQS_OUTPUT_CLOCK_ENABLE
|
String
|
No
|
Specifies whether the clock enable for the
output registers are tied-off (does not affect the output
registers). Values are "TRUE" and
"FALSE" . If omitted, the default is
"FALSE" .
|
TIE_OFF_DQS_OE_CLOCK_ENABLE
|
String
|
No
|
Specifies whether the clock enable for the oe
registers that are controlled by the outclkena port
should be tied off. Values are "TRUE" and
"FALSE" . If omitted, the default is
"FALSE" .
|
DQS_DELAY_REQUIREMENT
|
String
|
No
|
Specifies the value of the delay requirement.
The DQS_DELAY_REQUIREMENT parameter is available only
if the HAS_DQS_DELAY_REQUIREMENT parameter is
specified to "TRUE" .
|
HAS_DQS_DELAY_REQUIREMENT
|
String
|
No
|
Specifies whether to use a delay requirement.
Values are "TRUE" and "FALSE" . If
omitted, the default is "FALSE" .
|