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".
|