
Document type:
Title:
Revision date:
Revision:
User's Manual (MUT)
Mod. V2718 VME PCI Optical Link Bridge
03/07/2018
11
NPO:
Filename:
Number of pages:
Page:
00106/03:V2718.MUTx/11
V2718_REV11.DOC
79
38
3.5. V2718 Internal hardware components
In the following some hardware setting components, located on the boards, are listed.
See
for their exact location on the PCB and their settings.
3.5.1. Switches
ROTARY SWITCHES
:
Type:
2 rotary switches.
Function:
they allow to select the VME base address
of the module, when it operates in slave mode.
Besides, they can be used as board indentifier (Board
ID) by reading their status through the register
address 0x36 (see §
).
PROG_0
6
:
Type:
DIP switch.
Function:
Forces the System Controller to be
enabled, regardless the 1
st
Slot detection
ON
: SYSTEM CONTROLLER enabled
OFF
: don’t care
PROG_1
:
Type:
DIP switch.
Function:
Forces the System Controller to be
disabled, regardless the 1
st
Slot detection
ON
: SYSTEM CONTROLLER disabled
OFF
: don’t care
PROG_2
:
Type:
DIP switch.
Function:
When this switch is ON, the master initiates
the VME cycles without waiting the Bus Grant from
the arbiter; this setting must be used only for test
purposes, since conflicts may occur when more VME
masters are present.
ON
: Requester bypassed
OFF
: don’t care
PROG_3
:
Type:
DIP switch.
Function:
Selects between A24 and A32 mode for the
SLAVE addressing (see Fig. 2.2)
ON
: The board responds only to A32 cycles (bits
[31..24] b.a.,
bits [23..16] don’t care)
OFF
: The board responds only to A24 cycles (bits
[31..24] b.a., bits [23..16] don’t care)
6
If PROG_0 is set to ON, then PROG_1 must be set to OFF and vice versa.