README
=========================

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

* This package contains Verilog-A models for variable domain translation (VDT):
    v2phase     /   phase2v
    v2freq      /   freq2v
    v2delay     /   delay2v
    v2duty      /   duty2v

* For more details, refer to the ICCAD 2007 paper:
    Jaeha Kim, Kevin D. Jones, Mark A. Horowitz, ʺVariable Domain Transformation 
    for Linear PAC Analysis of Mixed‐Signal Systems,ʺ ACM/IEEE Int’l Conf. on 
    Computer‐Aided Design (ICCAD), Nov. 2007.

* The spectre directory contains the VDT modules suitable for performing PSS/PAC
  analyses (linearizable with no hidden states) while the hspice directory 
  contains the VDT modules suitable for TRAN simulation only.

* The testbench subdirectories contain the spectre/hspice testbenches for 
  testing the functionalities of the VDT modules.

