cs5535 National Semiconductor Corporation, cs5535 Datasheet - Page 418

• Manufacturer Part Number: cs5535
• Description: Geode Cs5535 Companion Multi-function South Bridge
• Manufacturer: National Semiconductor Corporation

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5.14 LOW PIN COUNT REGISTER DESCRIPTIONS
The registers for the Low Pin Count (LPC) port are divided
into two sets:
• Standard GeodeLink Device MSRs (Shared with DIVIL,
• LPC Specific MSRs
The MSRs are accessed via the RDMSR and WRMSR pro-
cessor instructions. The MSR address is derived from the
perspective of the CPU Core. See Section 3.2 "CS5535
MSR Addressing" on page 53 for more details on MSR
addressing.
MSR Address
see Section 5.6.1 on page 299.)
5140004Ch
5140004Dh
5140004Eh
5140004Fh
Type
R/W
R/W
RO
RO
Register Name
LPC Address Error (LPC_EADDR)
LPC Error Status (LPC_ESTAT)
LPC Serial IRQ Control (LPC_SIRQ)
LPC Reserved (LPC_RSVD)
Table 5-54. LPC Specific MSRs Summary
418
All MSRs are 64 bits, however, the LPC Specific MSRs are
called out as 32 bits. The LPC module treats writes to the
upper 32 bits (i.e., bits [63:32]) of the 64-bit MSRs as don’t
cares and always returns 0 on these bits.
The LPC Specific MSRs are summarized in Table 5-54.
The reference column in the summary table points to the
page where the register maps and bit descriptions are
listed.
Reset Value
00000000h
00000000h
00000000h
00000000h
Reference
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