PC87591L datasheet(315/437 Pages) NSC

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Host Controller Interface Modules (Continued)

Revision 1.07

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Lock SuperI/O Host Access Register (LKSIOHA)

This register controls locking of host access to the Host-Controlled modules. All bits of this register, except bit 1, are cleared

on reset. The bit 1 reset value is defined by RTC Lock Default bit in “Protection Word” on page 226.

Location: 00 FCE416

Type: R/W

SuperI/O Access Lock Violation Register (SIOLV)

This register provides an error indication when a host lock violation occurs on Host-Controlled modules access.

Location: 00 FCE616

Type: R/W1C

Bit

76543210

Name

Reserved

LKRTCHA

LKCFG

Reset

000000

see text

Bit

Name

Reserved

Reset

00000000

Bit

Description

LKCFG (Lock Conﬁguration Registers Host Access).

0: Host processor access to the Configuration registers is enabled

1: Host processor access to the Configuration registers is blocked

LKRTCHA (Lock Real-Time Clock (RTC) Host Access).

0: Host processor access to the RTC registers is enabled

1: Host processor access to the RTC registers is blocked

15-2

Reserved.

Bit

76543210

Name

Reserved

RTCLV

CFGLV

Reset

00000000

Bit

Name

Reserved

Reset

00000000

Bit

Description

CFGLV (Conﬁguration Register Lock Violation). The bit is set (1) when the host processor attempts to access

the conﬁguration registers while LKFDCHA bit in LKSIOHA register is set.

RTCLV (Real-Time Clock (RTC) Lock Violation). The bit is set (1) when the host processor attempts to access

the RTC while LKRTCHA bit in LKSIOHA register is set.

15-2

Reserved.

PC87591L Datasheet(PDF) 315 Page - National Semiconductor (TI)

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