Purpose: Indicates whether there is a fixed additional delay between the enable/disable time for a tristatable I/O. (A tristatable I/O is an I/O with three output states: high, low, and high impedance.) 2 ns delay on rising edge, 0 ns delay on falling edge.
Families |
Supported |
Fusion |
Yes |
ProASIC3E |
Yes |
ProASIC3 |
Yes |
ProASIC PLUS |
No |
Axcelerator |
No |
ProASIC |
No |
SX-A |
No |
SX |
No |
RTSX-S |
No |
eX |
No |
MX |
No |
Values: You can set the skew for a clock to either on or off.
Default value: The default skew displayed in the I/O Attribute Editor is off.
Note: A Tri State or "tristatable" logic gate has three output states: high, low, and high impedance. In a high impedance state, the output acts like a resistor with infinite resistance, which means the output is disconnected from the rest of the circuit.