ESD VME-DIO32-L, Hardware Manual

Page: 13 / 22

Hardware
VME-DIO32-L Hardware Manual Doc. Nr.: M.1607.27 / Rev. 1.0 Page 13 of 22
2.3.3 VME Base Address
The VME base address can be set via the DIP-switches SW110, SW120, SW121 on the board and
the rotary switch ADDR (SW111) in the front panel.
Switch SW121 SW120 SW110 SW111
Position 1 2 3 4 1 2 3 4 1 2 3 4
Via rotary switch
ADDR
Address
bit
A23 A22 A21 A20 A19 A18 A17 A16 A15 A14 A13 A12 A11 A10 A09 A08
Descript
-ion
VMEbus base
address A[23:20]
VMEbus base
address A[19:16]
VMEbus base
address
A[15:12]
VMEbus base
address A[11:08]
Example (Default setting on delivery):
Adress
bit:
1 1 1 0 0 0 0 1 0 1 0 0 0 0 0 0
E
h
1
h
4
h
0
h
Meaning
VMEbus base address A[23 :08]): E140
h
The address bits A[07:01] are local decoded: xx
h,
VMEbus base address:
E14000
h
Table 3: VME base address
2.3.4 Address-Modifier (SW130)
The VME-DIO32-L can be operated with access modes A24/D16 (standard).
At the default setting of the DIP-switch SW130 (see
Table 2 , page 12), A24/D16 accesses to the
board are enabled.
AM2 will be ignored, so user mode as well as supervisory mode can be used for addressing.
Default setting: Standard supervisory or non-privileged data access (A24-Mode)
AM0, AM1 and AM4 are evaluated
‘individually’. AM2 and AM2E form a unit and are always
evaluated together. AM3, AM4 and AM5 are
always ‘1’.
AM0, AM1 and AM2 and AM2E are evaluated as follows:
Switch SW130
Position 1 2 3 4
Address bit
Modifier
AM2E AM2 AM1 AM0
ON 0 0 0 0
OFF 1 1 1 1