Sundance SMT329 User Manual
Page 23
These registers are decoded in the VME A16 space, which means that the VME address
modifiers must be set to either of the following:
Hex Code VME
space
Function
2D
A16
Short supervisory access
29
A16
Short non privileged access
The VME address bits are decoded as follows:
VME Address
bit
Compare to Comment
15 1
Must
be
high
14 1
Must
be
high
13
SW1/1
On = 0 Off = 1
12
SW1/2
On = 0 Off = 1
11
SW1/3
On = 0 Off = 1
10
SW1/4
On = 0 Off = 1
9
SW1/5
On = 0 Off = 1
8
SW1/6
On = 0 Off = 1
7
SW1/7
On = 0 Off = 1
6
SW1/8
On = 0 Off = 1
5-1
-
Select individual registers
Note that VME address bits A16 and above are ignored.
Example: SW1 switches 1-7 set to off, switch 8 set to on gives a VME A16 base address of
0xff80.
VME address bits 5 and below decode the following 16 bit wide registers:
Offset (hex)
Register
00-01 Board
ID
02-03 Device
type
04-05
Status / Control
06-07 SRAM
base
address
08-09 I/O
base
address
0A-3B Unused
User Manual SMT329
Page 23 of 52 Last
Edited:
09/02/2007
10:58:00