cs5535 National Semiconductor Corporation, cs5535 Datasheet - Page 219

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

Revision 0.8
GLPCI_SB Register Descriptions
5.2.1.6
MSR Address
Type
Reset Value
This register is reserved for internal use by National and should not be written to.
5.2.2
5.2.2.1
MSR Address
Type
Reset Value
63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
63:60
59:56
55:52
51:49
Bit
Bit
1:0
FTH
GLPCI_SB Specific MSRs
Name
FTH
RTH
RSVD
(RO)
RTL
GeodeLink Device Diagnostic MSR (GLPCI_GLD_MSR_DIAG)
Global Control (GLPCI_CTRL)
Name
PMODE0
RSVD
51000005h
R/W
00000000_00000000h
51000010h
R/W
44000030_00000003h
RTH
IB/OB
OB
IB
IB
---
GLPCI_GLD_MSR_PM Bit Descriptions (Continued)
Description
Power Mode 0. Power mode for GLIU clock domain.
00: Disable clock gating. Clocks are always on.
01: Enable active hardware clock gating. Clock goes off whenever this module’s circuits
10: Reserved.
11: Reserved.
Description
In-Bound Flush Threshold. Controls the timing for requesting new read data while
concurrently flushing previously prefetched, stale read data. While flushing stale data, if
the number of prefetched 64-bit WORDs reaches this level, then a new read request is
made.
In-Bound Read Threshold. Controls the timing for prefetching read data. If the number
of prefetched 32-bit WORDs is decremented and reaches this threshold, a subsequent
GLIU request is generated to fetch the next cache-line of read data.
Reserved (Read Only). Returns 0.
Retry Transaction Limit. Limits the number of out-bound retries. If a target signals retry
indefinitely the PCI interface may be configured to abort the failing out-bound request.
000: No limit.
001: 8 retries.
010: 16 retries.
011: 32 retries.
SUS
RSVD
are not busy.
GLPCI_CTRL Bit Descriptions
GLPCI_CTRL Register Map
FPIDE
(Continued)
RTL
219
RSVD
100: 64 retries.
101: 128 retries.
110: 256 retries.
111: 512 retries.
9
ILTO
8
7
RSVD
6
LAT
5
4
CISM
3
www.national.com
0
2
0
1
0
0