Titanium Interfaces User Guide
Option Choices Description
Enable Dynamic
Delay
On or off For inputs, 64 steps with approximately 25 ps of delay per step. If
you enable this option, specify the enable, reset, and control pins
as well as the clock pin.
You can ony set the dynamic delay for individual signals, not
buses.
A clock is required when using the dynamic delay. If the input
register is used, the clock is the same as the input register.
Otherwise, you have to define a clock in the dynamic delay group
box.
Output Mode
Use output mode for output signals.
Table 36: Output Mode Options
Option Choices Description
Constant Output none, 1, 0 Choose whether the output is VCC (1) or GND (0). Otherwise,
leave this option as none.
Register Option none, register,
inv_register
Choose whether the output is registered or has an inverted
register.
If you choose register:
• Define an output clock pin name.
• Turn clock inversion on or off.
• Under Double Data I/O Option, select one of the following:
none Do not use double data I/O.
normal Data is passed to the core on both the
positive and negative clock edges
resync Data is resynchronized to pass both data
signals on the positive clock edge. <pin
name>_hi is the positive edge and <pin
name>_lo is the negative edge.
• To use the serializer, turn on Enable Serialization and specify the
serial clock pin name. (You cannot use the serializer with DDIO.)
The invert register option (inv_register) does not support DDIO.
Drive Strength Depends on I/O
standard
Choose the drive strength current in mA.
The HVIO and HSIO have different drive strength options
depending on the I/O standard you choose. If you change the I/O
standard, the Interface Designer resets the drive strength setting if
the value is out of range for the selected standard.
Enable Fast Slew
Rate
On or off Optionally enable slew rate.
Static Delay Settting 0 - 15 Choose the amount of static delay, each step adds approximately
60 ps of delay.
You can only set the static delay for individual signals, not buses.
Inout Mode
Use inout mode for bidirectional signals. Inout mode has the same options for the input and
output as the input and output modes.
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