CS5535-UDCF AMD (ADVANCED MICRO DEVICES), CS5535-UDCF Datasheet - Page 49

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CS5535-UDCF

Manufacturer Part Number
CS5535-UDCF
Description
Manufacturer
AMD (ADVANCED MICRO DEVICES)
Datasheet

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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Signal Definitions
3.2.8.1
Functions listed in Table 3-9 are functions that may be
assigned to specific GPIO balls. The “Ball No.” column
AMD Geode™ CS5535 Companion Device Data Book
Function Name
32KHZ
AC_BEEP
DDC_SCL
DDC_SDA
LOW_BAT#
MFGPT0_C1
MFGPT0_C2
MFGPT0_RS
MFGPT1_C1
MFGPT1_C2
GPIO Functions and Recommended Usage
Ball
No.
C8
D3
D2
D2
K3
E1
E2
A9
K3
A1
Table 3-9. GPIOx Available Functions Descriptions
GPIO[x]
GPIO27
GPIO25
GPIO11
GPIO1
GPIO3
GPIO4
GPIO5
GPIO1
GPIO6
GPIO6
Type
I/O
I/O
O
O
O
O
O
O
I
I
Description
32 kHz Clock. When invoked, this ball produces a buffered output
of the 32 kHz clock provided on KHZ32_XCI and KHZ32_XCO
(balls A4 and B3, respectively).
This option is invoked by selecting the OUT_AUX2 option of
GPIO27. Note that since GPIO27 is in the Standby power domain,
the 32 kHz clock output will continue in Sleep and Standby states.
Legacy PC/AT Speaker Beep. Connect to codec’s PC_BEEP.
DDC Serial Clock. This is a “recommended use” for GPIO3,
because this is one of the few GPIOs that have a high drive capac-
ity, open-drain output. The serial clock function must be imple-
mented in software to support DDC monitors. There is no
dedicated DDC clock function within the Geode CS5535 compan-
ion device.
DDC Serial Data. This is a “recommended use” for GPIO4,
because this is one of the few GPIOs that have a high drive capac-
ity, open-drain output. The serial data function must be imple-
mented in software to support DDC monitors. There is no
dedicated DDC data function within the Geode CS5535 compan-
ion device.
Low Battery Detect. This is a “recommended use” for GPIO25 in
battery-powered systems. It is invoked by setting GPIO25 to the
IN_AUX1 mode. The signal is intended to be driven low by an
external circuit when the battery voltage falls below a preset value
(determined by the external circuit). It could be used to generate a
PME (interrupt) - connected to LowBat function in the Power Man-
agement Controller that would then de-assert WORKING and
WORK_AUX, if no software action is taken within a programmable
time.
Multi-Function General Purpose Counter #0 - Compare 1 Out.
An output from the counter that, when asserted, indicates the
counter has reached the conditions set up in the counter’s
Compare 1 registers.
Multi-Function General Purpose Counter #0 - Compare 2 Out.
An output from the counter that, when asserted, indicates the
counter has reached the conditions set up in the counter’s
Compare 2 registers.
Multi-Function General Purpose Counter #0 - Restart. An input
to the counter that causes it to be reset to initial conditions and
then to resume counting.
Multi-Function General Purpose Counter #1 - Compare 1 Out.
An output from the counter that, when asserted, indicates the
counter has reached the conditions set up in the counter’s
Compare 1 registers.
Multi-Function General Purpose Counter #1 - Compare 2 Out.
An output from the counter that, when asserted, indicates the
counter has reached the conditions set up in the counter’s
Compare 2 registers.
gives the ball that must be used if this function is selected,
and the “GPIOx” column gives the GPIO that the function is
associated with.
31506B
49

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