VFAT readout electronics

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A VFAT board from CERN is evaluated for use as a readout board to convert the GEM output analog signal to a digital signal.

LVDS
I2C


Ribbon cable pinouts

# Name Value Test rig color
Primary/Second
B1 DGND Digital Ground Black/Grey (shared)
A1 DVDD +2.5V Red/Grey (shared)
B2 SDA I2C Data Green/Yellow
A2 SCL I2C Clock Yellow/Green
B3 DGND Digital Ground Black/Grey (shared)
A3 DVDD +2.5V Red/Grey (shared)
B4
A4
B5 I2C ADDR I2C Address (most or least significant??) White/Blue
A5 I2C ADDR I2C Address (most or least significant??)
B6 I2C ADDR I2C Address (most or least significant??)
A6 REH-S Soft Reset (Program saved)
B7
A7 REH-B Hard Reset
..............
B22 DGND Digital Ground??
A22 SCAN E
B23 AGND Analog Ground
A23 AVDD 2.5V Grey/Red
B24 AGND Analog Ground
A24 AVDD 2.5V Grey/Red
B25 AGNDD Analog Ground?? Grey/Black
A25 AVDD 2.5V Grey/Red