Oracle Vacuum Cleaner CPU-56T User Manual

Table 26:

 Miscellaneous Control Register

Bit

Name

Description

Default

Access

0

TSOP EN

Used to switch between PLCC PROM access and flash
memory access in the address space for CS0#. After reset,
this bit is cleared (0).

a

0: If SW1−2 is OFF, the PLCC PROM is available in the
CS0# address space. If SW1−2 is ON the flash memory is
available in the CS0# address space.
1: The flash memory is available in the CS0# address
space.
Note

: You can only write a "1" to this bit. After doing so,

it can not be cleared anymore to "0".

a

0

2

r/w

1

PS/2 BACK

Used to switch between a rear connected and a front
connected PS/2 keyboard/mouse.

a

0: Front panel PS/2 keyboard/mouse is enabled.
1: Rear panel PS/2 keyboard/mouse is enabled.

0

2

r/w

2

SER2_RS422E
N

Used to enable the voltage supply for the RS−422 cable
connected to the serial B interface.

a

0: Voltage supply is disabled. The ring indicator of the
serial B interface can be used.

a

1: Voltage supply is enabled. The ring indicator of the
serial interface B cannot be used.

a

0

2

r/w

3..4

−

These bits are always zero.

0

2

r

5..7

ETH1/3CTRL

These bits determine whether Ethernet interface 1 at the
front panel or Ethernet interface 3 via IOBP is active. The
selection is made by OpenBoot or VxWorks at board
start−up. Per default, the selection is done automatically
and depends on which Ethernet interface has a link. If
both or no interfaces have a link, Ethernet interface 1 is
preferred
000

2

: No change of current status

0x1

2

: Ethernet interface 1 is enabled

010

2

: Ethernet interface 3 is enabled

1x1

2

: Selection is made automatically with preference of

interface 1
110

2

: Selection is made automatically with preference of

interface 3
Note

: You can only write a "1" to each of these bits. After

doing so, the respective bit can not be cleared anymore to
"0".

a

−

w

5

ETH1 EN

Status of Ethernet interface 1
0: Disabled
1: Enabled

a

1

2

r