CS5535-UDCF AMD (ADVANCED MICRO DEVICES), CS5535-UDCF Datasheet - Page 82
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CS5535-UDCF
Manufacturer Part Number
CS5535-UDCF
Description
Manufacturer
AMD (ADVANCED MICRO DEVICES)
Datasheet
1.CS5535-UDCF.pdf
(579 pages)
Specifications of CS5535-UDCF
Operating Temperature (min)
0C
Operating Temperature (max)
85C
Operating Temperature Classification
Commercial
Mounting
Surface Mount
Lead Free Status / RoHS Status
Compliant
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5.1
Many traditional architectures use buses to connect mod-
ules together, usually requiring unique addressing for each
register in every module. This requires that some kind of
house-keeping be done as new modules are designed and
new devices are created from the module set. Module
select signals can be used to create the unique addresses,
but that can get cumbersome and it requires that the mod-
ule selects be sourced from some centralized location.
To alleviate this issue, AMD developed an internal bus
architecture called GeodeLink. The GeodeLink architecture
connects the internal modules of a device using the data
channels provided by GeodeLink Interface Units (GLIUs).
Using GLIUs, all internal module port addresses are
derived from the distinct port that the module is connected
to. In this way, a module’s Model Specific Registers
(MSRs) do not have unique addresses until a device is
defined. Also, as defined by the GeodeLink architecture, a
module’s port address depends on the location of the mod-
ule sourcing the cycle, or source module.
The Geode CS5535 companion device incorporates one
GLIU into its device architecture. Except for the configura-
tion registers that are required for x86 compatibility, all
internal registers are accessed through a Model Specific
Register (MSR) set. MSRs have a 32-bit address space
and a 64-bit data space. The full 64-bit data space is
always read or written when accessed.
82
GeodeLink™ Interface Unit
31506B
5.1.1
Table 5-1 shows the GeodeLink Devices connected to
each of the seven GLIU ports on the Geode CS5535 com-
panion device.
Port #
1
2
3
4
5
6
7
AMD Geode™ CS5535 Companion Device Data Book
Table 5-1. GLIU Port Connections
GLIU Port Connections
GeodeLink™ Device
GeodeLink PCI South Bridge (GLPCI_SB)
USB Controller #2 (USBC2)
ATA-5 Controller (ATAC)
Diverse Device (DD)
AC97 Audio Controller (ACC)
USB Controller #1 (USBC1)
GeodeLink Control Processor (GLCP)
GeodeLink™ Interface Unit
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