CS5535-UDCF AMD (ADVANCED MICRO DEVICES), CS5535-UDCF Datasheet - Page 126

• 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

5.10.12 Related Diverse Device Functions
FA20# and INIT are not passed directly to the processor.
SSM code manipulates equivalent functions in the proces-
sor.
The HCE registers are considered part of the USB opera-
tional register set for some software and hence share the
same memory mapped register space. The GLIU descrip-
tor
MSR_LBAR_KEL2 must all be set to the same base. The
GLIU will route accesses at memory offset 100h and above
to the Diverse Device and accesses below 100h to the
USB.
The address decoder in the DIVIL routes accesses to I/O
Addresses 060h and 064h to the KEL or LPC based on the
value of EmulationEnable in HCE_Control (KEL Memory
Offset 100h). If snoop mode is enabled and the Emulation-
Enable bit is not set, writes are made directly to both the
KEL and LPC.
The LPC IRQ1 and IRQ12 outputs are connected to both
KEL and the PIC subsystem. Masking logic in the sub-
system allows the LPC interrupts to be used directly or the
KEL set can be used.
The KEL ASMI is routed through the Diverse Device’s
Standard GLD_MSR_SMI (MSR 51400002h). It may be
masked
MSR_KELX_CTL (MSR 5140001Fh).
126
for
off
the
there,
USBs,
31506B
but
it
MSR_LBAR_KEL1,
is
only
cleared
and
via
5.10.13 Emulation Event Decode
Emulation Events are of two types: frame synchronous and
asynchronous. The conditions for a frame synchronous
interrupt are sampled by the KEL at each SOF interval and,
if an event condition exists, it is signaled at that time. For
asynchronous events, the event is signaled as soon as the
condition exists.
The equation for the synchronous Emulation Event condi-
tion is:
synchronousEvent =
HCE_Control.EmulationEnable
and
HCE_Control.CharacterPending
and not
HCE_Status.OutputFull
When this decode is true, an Emulation Event is generated
at the next SOF. The Event condition is latched until the
decode becomes false.
The equation for the asynchronous Emulation Event condi-
tion is:
asynchronousEvent =
HCE_Control.EmulationEnable
and
HCE_Status.InputFull
or
HCE_Control.ExternlIRQEn
and
HCE_Control.IRQ1Active
or
HCE_Control.IRQ12Active
AMD Geode™ CS5535 Companion Device Data Book
(KEL Memory Offset 100h[0])
(KEL Memory Offset 100h[2])
(KEL Memory Offset 10Ch[0]).
(KEL Memory Offset 100h[0])
(KEL Memory Offset 10Ch[1]),
(KEL Memory Offset 100h[4])
(KEL Memory Offset 100h[6])
(KEL Memory Offset 100h[7]).
Keyboard Emulation Logic