
3.0 Device Architecture and Configuration
(Continued)
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54
Revision1.2
P
3.7.7
This register provides a fast way to disable one or more modules, without having to access the Activate register of each (see
Section 3.3.1 on page 43).
Power Well:V
SB
Location:Index 26h
Type:
Varies per bit
ServerI/O Configuration 6 Register (SIOCF6)
Bit
7
6
5
4
3
2
1
0
Name
LOCKFDS
General-Purpose
Scratch
0
Reserved
SER1DIS
SER2DIS
PARPDIS
FDCDIS
Reset
0
0
0
0
0
0
0
Bit
Type
Description
7
R/W1S
LOCKFDS (Lock Fast Disable Configuration).
When set to 1, this bit locks itself, the SER1DIS,
SER2DIS, PARPDIS and FDCDIS bits in this register and the GLOBEN bit in the SIOCF1 register by
disabling writing to all these bits. Once set, this bit can be cleared either by V
DD
Power-Up reset (or
Hardware reset) or by V
SB
Power-Up reset, according to the VSBLOCK bit in the ACBLKCTL register
(see Section 6.3.4 on page 128). In addition, this bit is cleared by setting the UNLOCKF bit in the
ACBLKCTL register (
PC87413 and PC87417
).
0: R/W bits are enabled for write (default)
1: All bits are RO
6-5
R/W
General-Purpose Scratch.
4
-
Reserved.
3
R/W or
RO
SER1DIS (Serial Port 1 Disable).
When set to 1, this bit forces the Serial Port 1 module to be disabled
(and its resources released) regardless of the actual setting of its Activation bit (index 30).
0: Enabled or Disabled, according to Activation bit (default)
1: Disabled
2
R/W or
RO
SER2DIS (Serial Port 2 Disable).
When set to 1, this bit forces the Serial Port 2 module to be disabled
(and its resources released) regardless of the actual setting of its Activation bit (index 30).
0: Enabled or Disabled, according to Activation bit (default)
1: Disabled
1
R/W or
RO
PARPDIS (Parallel Port Disable).
When set to 1, this bit forces the Parallel Port module to be disabled
(and its resources released) regardless of the actual setting of its Activation bit (index 30).
0: Enabled or Disabled, according to Activation bit (default)
1: Disabled
0
R/W or
RO
FDCDIS (Floppy Disk Controller Disable).
When set to 1, this bit forces the Floppy Disk Controller
module to be disabled (and its resources released) regardless of the actual setting of its Activation bit
(index 30).
0: Enabled or Disabled, according to Activation bit (default)
1: Disabled