The VMEbus specification (ANSI/VITA 1-1994) has been developed for 19" racks and supports bus sizes up to 21 slots.
The J1 backplane 3 U (16 bit) supports all data and control signals and thus functions as an independent backplane. The J2 backplane (3 U) complements the J1 backplane in the system to provide a higher transmission rate (32 bit).
The "Mono" backplane (6 U) enables fast assembly and easy power supply. It combines the J1 and the J2 backplanes into one unit.
Active and passive termination and daisy chain are available for bus termination.
J1, J2 = 3 U
J1, J2 Monolithic = 6 U
J1 = 6 layers
J2 = 2 layers
J1, J2 Monolithic = 8 layers
J1, J2 = 3.2 mm
J1, J2 Monolithic = 3.75 mm
Transmission rates and bus parameters compliant with VME specification
Connector class 2
Power connections M4