A file conforming to the openEPDA data format has the following structure.
The first line is a format identifier,
# openEPDA CDF. After
this, the data section follows, which adheres to the YAML format ,
and contains all settings (numeric and textual) data in the form of an
An example of a file recorded in the openEPDA CDF format is shown below.
The following keys are required to be present in the CDF:
_openEPDA: an object defining the format and its version.
cdf: a string with a unique identifier of the CDF
cell: a string with an identifier of the PIC design to be measured
unit: a string defining a unit for the coordinates in the file
bbox: a list with the coordinates of two bounding box corners, (south-west and north-east).
io: An object with IOs located on the chip.
The following keys are optional to be present in the CDF:
fiducial: an object with fiducial markers on the chip.
Example CDF file¶
# openEPDA CDF _openEPDA: format: openEPDA-CDF version: "0.2" link: "https://openEPDA.org" cdf: SP19-34 cell: SP19-34 unit: um bbox: - [-50, -50] - [4550, 3950] fiducial: target: - fidt0: [2250, 257.5] - fidt1: [2250, 3642.5] cornerUL: - cul0: [1737.5, 257.5] - cul1: [1737.5, 3642.5] disc: - dsk0: [1500.0, 1500.0] io: optical_port: - ioW001: [-50, 25] - ioW003: [-50, 50] - ioW005: [-50, 75] - ioW007: [-50, 100] - ioW009: [-50, 125] - ioE001: [4550, 25] - ioE003: [4550, 50] - ioE005: [4550, 75] - ioE007: [4550, 100] - ioE009: [4550, 125] dc_pad: - dc0N00: [4350, 3845] - dc0N01: [4200, 3845] - dc0S00: [150, 55] - dc0S01: [300, 55] rf_pad: - rf0W00: [150, 1200]