XVME-6500
USER
’S MANUAL
Acromag, Inc. Tel: 248-295-0310
- 18 -
http://www.acromag.com
- 18 -
www.acromag.com
3.1.3 VME Configuration Switch SW4
Table 3.1.c summarizes the functions, settings, and descriptions for dip switch
SW4.
Table 3.1.c: VME Configuration Switch SW4
VME Configuration Switch SW4
Position
Function
Function Description
1-2
VME_
SYSCON
Sw.1
–
Sw.2
OFF
–
OFF : Disable VME System Controller
OFF
–
ON : Enable VME system Controller
(default)
ON
–
OFF : Enable in VME64x mode while
GA = “00001”
ON
–
ON : Enable Auto-ID mode by BGIN#3
detected low
3
SYSRESET_in
_ENA
VME SYSRESETn assertion on VME backplane
will cause a local reset (OFF by default)
4
VME64x_
AUTOID_ENA
Enable VME Auto Slot Identification Logic (ON
by default)
5
PON_FSM_
DIS
Disable PON_FSM micro-sequencer (ON by
default)
6
SYSRESET_ou
t_ENA
A local reset will generate a VME SYSRESETn
assertion on VME backplane (ON by default)
7
SPI_WR_
PROT
Enable Write Protect for SPI Flash EEPROM
configuration (ON by default)
8
SPI_CFG_
ENA
Enable SPI Flash EEPROM configuration (ON by
default)
SW4 is used to configure the VME system controller properties, as well as the
reset behavior, start-up behavior and properties of the EEPROM which holds
the FPGA firmware.
SW4-1 and SW4-2 are used to manually enable or disable the system controller
functionality of the bridge. System controller can also be automatically
enabled in 64x mode when the geographic addres
s of the board is “00001,” or
slot 1. If both switches are on, Auto-ID mode is selected and system controller
will be enabled if the BGIN#3 signal from the backplane is detected low at
power-up.
If SW4-3 is on, a VME SYSRESETn assertion on the backplane will cause a local
reset. Otherwise, the signal will be isolated from the backplane.
If a VME64x backplane is being used, SW4-4 can be used to enable Auto Slot
Identification.
