CS5535-UDCF AMD (ADVANCED MICRO DEVICES), CS5535-UDCF Datasheet - Page 61

• Manufacturer Part Number: CS5535-UDCF
• Manufacturer: AMD (ADVANCED MICRO DEVICES)

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

Global Concepts and Features
4.3
A typical or “generic” Geode CS5535 companion
GeodeLink Device is illustrated in Figure 4-4 along with
internal and external connections. The GeodeLink Device
consists of the Native Block, GeodeLink Adapter, MSRs,
and Clock Control Units (CCU). Each of these is discussed
in the following paragraphs.
Before going into the blocks of the typical device, it should
be noted that the following modules in the Geode CS5535
companion device follow this model very closely:
Specifically, they all use the GeodeLink Adapter.
The Native Block performs the “useful” work for the device.
For example, in a serial port device, the transmit parallel to
serial shift register is located in this block. The Native Block
connects to the outside world, that is, external devices, via
the I/O cells and pads. The Native Block contains registers
that are manipulated by software to perform the “work”.
These are operational registers that are typically manipu-
lated by device drivers. The Native Blocks are covered in
detail in the corresponding module’s register descriptions.
The GeodeLink Adapter sits between the GLIU and the
Local bus. The Local bus is a traditional address/data bus
supporting GeodeLink Adapter to Native Block transactions
(slave transactions) and Native Block to GeodeLink
AMD Geode™ CS5535 Companion Device Data Book
— AC97 Controller (ACC)
— ATA-5 Controller (ATAC)
— Diverse Device (DD)
Typical GeodeLink™ Device
Registers
Native
Native
Block
Block
Cells &
Pads
I/O
GeodeLink™ Device
Interface
MSRs
Local
Bus
Figure 4-4. Typical GeodeLink™ Device
External Device Interface
Side-band signals to other Native Blocks
GeodeLink™
Adapter
Adapter transactions (master transactions). However, it is
a single transaction bus in that any given slave or master
transaction runs to completion before another transaction
can start. This is compatible with the Native Blocks listed
above (i.e., ACC, ATAC, and DD), which are all single
transaction devices. As suggested by Figure 4-4, the
GeodeLink Adapter contains no registers and is strictly
speaking, just a bridge.
The MSRs are conceptually separate from the Native Block
and GeodeLink Adapter and generally provide overall
GeodeLink Device configuration and control. In most
designs they are physically separated as shown. There are
six standard MSRs that are detailed in Section 4.8 "Stan-
dard GeodeLink™ Device MSRs". All GeodeLink Devices
have these standard MSRs. GeodeLink Devices may also
incorporate additional MSRs as appropriate.
On the upper right of the figure, the connections between
the GeodeLink Adapter and GLIU are illustrated. All of
these signals were covered previously in Section 4.1
"GeodeLink™ Architecture Overview".
The Clock Control Units (CCU) are key components in the
Active Hardware Clock Gating (AHCG) infrastructure. They
provide the mechanism for turning off clocks to sections of
logic that are Not Busy. Furthermore, they take an asyn-
chronous global reset signal and synchronize it to the
applicable clock domain.
CCU
CCU
CCU
Reg In
Data In
Reg Out
Data Out
Diag
ASMI
ERR
Busy Signals
to GLCP
MSRs
GLIU
31506B
GeodeLink™ Device Clock
Local Bus Clock
Native Block Clock
Global Internal Reset
Other Device
Connections
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