CS5535-UDCF AMD (ADVANCED MICRO DEVICES), CS5535-UDCF Datasheet - Page 51

• 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

Signal Definitions
AMD Geode™ CS5535 Companion Device Data Book
Function Name
PWR_BUT#
AC_S_IN2
SLP_CLK_EN#
SLEEP_BUT
Table 3-9. GPIOx Available Functions Descriptions (Continued)
Ball
No.
A8
A1
F2
J3
GPIO[x]
GPIO13
GPIO28
GPIO12
GPIO11
Type
O
I
I
I
Description
Power Button. This GPIO can be mapped to the PMC “button-
push” event, that may be used to implement the power ON and the
four-second-delay power OFF functions. Note that GPIO28 comes
up in the IN_AUX1 mode after reset, enabling this feature.
Any power button change on this input must be at least two
KHZ32_XCI edges (approximately 62 µs) in duration to be cor-
rectly detected. If spurious transitions smaller than this are possi-
ble, then use on-chip GPIO input filter function to insure proper
operation. Additionally, the rise or fall time on this input must be
less than 10 µs. If transition times longer than this are possible,
then use the on-chip GPIO input filter function to insure proper
operation.
From the first power-up of the Standby power domain under which
no filter is enabled, spurious transitions on the first high-to-low
power button push are acceptable as long as the input is eventu-
ally low at least two KHZ32_XCI edges. Additionally, transition
times as slow as 1 ms are acceptable for the first push. Note that
these relaxed requirements work because this input is effectively a
“don’t care” at the hardware level after the first power-up until soft-
ware enables use of the power button. Before enabling use, the
software can setup the GPIO filter or other functions as needed.
Per the discussion of the Skip feature in Section 5.17 "Power
Management Control" on page 172, this input may be tied to
ground in order for the system to come on immediately when
Standby and Working power are available. Specifically, systems
that do not incorporate a power button should tie this input to
ground.
One side effect of the Skip feature, is that the platform design must
insure that this input is not low when Standby power is applied if
the Skip feature is not desired. Specifically, systems that incorpo-
rate use of a power button must insure that this input ramps to a
high no more than 1 µs behind V
establish a high on this input during power up could result in a
spurious Skip. See Section 7.6 "Skip Parameter" on page 573 for
AC timing.
Audio Controller Serial Data Input 2. This input receives serial
data from a second codec. This data stream contains both control
data and ADC audio data. This input data is sampled on the falling
edge of AC_CLK. If the codec’s Ready bit is set in this stream (slot
0, bit 15), then it is functionally ORed with AC_SDATA_IN1. Con-
nect to second codec’s serial data output.
Sleep Clock Enable. This signal is a control that is intended to be
connected to the external system clock generator chip. The
intended use is, when high, the clock generator runs; when low,
the clock generator turns off. From reset, a pull-up makes this
GPIO high. The active state of this signal indicates that the Geode
CS5535 companion device is in the Sleep state.
Sleep Button. This GPIO can be mapped to a PME “button-push”
type event and used to request the system software to put the sys-
tem to Sleep.
IO_VSB
31506B
ramp-up. Failure to quickly
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