TVME201 User Manual Issue1.1.1
Page 13 of 26
3.3 VME A24/A32 Memory Enable and Size
If VME memory space is not required, switch S4 to “0” (VME A24/A32 memory disabled).
Figure 3-4 : VME A24/A32 Memory Enable and Size
IndustryPack Memory is mapped into the VME A24 or VME A32 memory space.
In VME A24 memory space, the memory size can be configured from 32 Kbytes to 2 Mbytes memory
per IP slot.
In VME A32 memory space, the memory size is fixed 8 Mbytes per IP slot.
Rotary switch S4 is used to enable/disable VME A24/A32 memory and to select the required VME
memory size. Default setting of S4 is “0”, which signifies VME A24/A32 memory is disabled.
Positions “1” to “7” of S4 represent several memory spaces in VME A24, and with S4 = “F”, each IP
has an 8 Mbytes memory space in VME A32 address space.
The Memory Spaces for all IPs have the same size. If i.e. one IP requires 128 Kbytes of
memory, one IP requires 64 Kbytes of memory and 2 IP require no memory, then S4 must be
set to “3”, which selects a VME A24 memory size of 512 Kbytes, 128 Kbytes memory for each
IP.
