VME64x

VME64x or VME64 Extensions is the further enhancement of the VME64 standard. VME64x is defined in ANSI/VITA 1.1-1997 standard.

The brief information on VMEbus may be found on official VME technology FAQ page.

VMEbus major enhancements specified in VME64 standard:

1. 64 bit data and address capability

2. Locks, Configuration ROM / Control & Status Registers (CR/CSR)

3. rescinding DTACK*
4. Auto system control detection, auto slot ID
5. Optional shielded DIN connectors

VME64 Extensions:

1. 160 pin P1/J1, P2/J2 connectors. "z" and "d" rows added
2. Optional 2 mm hard metric 95 signal pin plus 19 or 38 ground pins P0/J0 connector for more user I/O
3. +3.3V and auxiliary supply, more +5V power
4. 35 more signal ground returns on P1/J1, P2/J2
5. 46 more user defined I/O pins on P2/J2.
6. 14 bused spare pins and 2 unbused spare pins on P1/J1 reserved for future
7. Test and maintenance bus pins
8. Slot geographical addressing
9. Mechanical support for EMC and ESD control
10. Solder side covers with ESD protection
11. An injection/extraction handle with a locking feature
12. User installed board to slot keying
13. Alignment pin for keying, alignment, and ESD/EMC protection
14. Front Panel Safety Ground
15. Reserved area on the front panel for ID and/or bar code labels
16. Rear I/O transition boards
17. Added CR/CSR definition
18. Live insertion specifications
19. 2eVME: two-edge protocol