Motorola MVME3100 User Manual
Chapter 1 Hardware Preparation and Installation
MVME3100 Installation and Use (V3100A/IH1)
5
Configuration Switch (S4)
An 8-position SMT configuration switch controls the VME SCON setting, Flash bank write-
protect, and the safe start ENV settings. It also selects the Flash boot image. The default setting
on all switch positions is OFF.
protect, and the safe start ENV settings. It also selects the Flash boot image. The default setting
on all switch positions is OFF.
Table 1-2. Configuration Switch (S4) Settings
Switch
Pos.
Setting
Notes
OFF (Factory Default)
ON
SAFE_START
1
Normal ENV settings
should be used.
should be used.
Safe ENV settings
should be used.
should be used.
This switch status is
readable from System
Status register 1, bit 5.
Software may check
this bit and act
accordingly.
readable from System
Status register 1, bit 5.
Software may check
this bit and act
accordingly.
BOOT BLOCK
SELECT
SELECT
2
Flash memory map is
normal and boot block A is
selected.
normal and boot block A is
selected.
Boot block B is
selected and mapped
to the highest
address.
selected and mapped
to the highest
address.
FLASH BANK WP
3
Entire Flash is not write-
protected.
protected.
Flash is write-
protected.
protected.
Reserved
4
VME SCON
AUTO/MANUAL
MODE
AUTO/MANUAL
MODE
5
Auto-SCON mode.
Manual SCON mode.
Manual SCON mode
works in conjunction
with the VME SCON
SELECT switch.
works in conjunction
with the VME SCON
SELECT switch.
MANUAL VME
SCON SELECT
SCON SELECT
6
Non-SCON mode.
Always SCON mode.
This switch is only
effective when the
VME SCON
AUTO/MANUAL
MODE switch is ON.
effective when the
VME SCON
AUTO/MANUAL
MODE switch is ON.
sATA Mode
7
Legacy Mode
sATA Mode
Sets GD31244 to
legacy or sATA mode
during reset
legacy or sATA mode
during reset
TRST SELECT
8
Normal MPC8540 TRST
mode where the board
HRESET will assert
TRST.
mode where the board
HRESET will assert
TRST.
Isolates the board
HRESET from TRST
and allows the board
to reset without
resetting the
MPC8540 JTAG/COP
interface.
HRESET from TRST
and allows the board
to reset without
resetting the
MPC8540 JTAG/COP
interface.
This switch should
remain in the OFF
position unless a
MPC8540 emulator is
attached.
remain in the OFF
position unless a
MPC8540 emulator is
attached.