
6.0 ACCESS.bus Interface
(Continued)
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128
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P
6.3.3
This register controls the configuration of the ACCESS.bus Interface. On reset, it is cleared (00h).
Power Well:
V
SB
Location:
Offset 01h
Type:
Varies per bit
ACCESS.bus Configuration Register (ACBCFG)
6.3.4
This register controls the configuration lock of the PC8741x device. On reset, it is cleared (00h).
Power Well: V
SB
Location:
Offset 02h
Type:
Varies per bit
ACCESS.bus Lock Control Register (ACBLKCTL)
Bit
7
6
5
4
3
2
1
0
Name
CSWRST
Reserved
ACCLMD
Reserved
ACTSTAT
Reset
0
0
0
0
0
0
0
0
Bit
Type
Description
7
R/W
CSWRST (Controller Software Reset).
When set to ‘1’, this bit triggers a Controller Software reset
sequence (see Section 2.2.3 on page 35) and then returns to ‘0’. It always returns ‘0’ when read.
0: Normal operation (default)
1: Enable the Controller Software Reset
6
Reserved.
5-4
R/W
ACCLMD (Locked Module Access Mode).
These bits control the behavior of the LPC Interface
whenever a locked module is accessed.
Bits
5 4
Function
0 0:
Complete cycle and generate Error SYNC; read 00h; ignore write (default).
0 1:
Complete cycle; read 00h; ignore write.
1 0:
Ignore cycle (do not generate SYNC).
1 1
:
Locked X-Bus chip-select (XCS3-XCS0): Generate Long Wait SYNC for read and write until
access lock is removed; then complete transaction normally.
Any other locked module: Complete cycle; read 00h; ignore write.
3-1
Reserved.
0
R/W
ACTSTAT (Module Activation Status Configuration).
This bit configures the behavior of the
Activation bit (for the Legacy modules) when read through the LPC bus (index 30; see Section 3.2.3 on
page 40). When this bit is set to ‘1’ and a specific module is disabled by the bits in the ACBFDIS
register (see Section 6.3.5 on page 130), or when the module is locked by the bits in the ACCLCF1
register (see Section 6.3.7 on page 132), the module Activation status that is read through the LPC
returns a ‘0’ value, ignoring the actual setting of the Activation bit.
0: Activation status reflects the value of the Activation bit (default)
1: Activation status reflects the value of the Activation bit, or returns ‘0’ if either the module is locked, or
disabled by the bits in the ACBFDIS register
Bit
7
6
5
4
3
2
1
0
Name
VSBLOCK
UNLOCKM
UNLOCKG
UNLOCKF
UNLOCKC
UNLOCKX
UNLOCKR
UNLOCKS
Reset
0
0
0
0
0
0
0
0