CS5535-UDCF AMD (ADVANCED MICRO DEVICES), CS5535-UDCF Datasheet - Page 48

• 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

Note 4.
Note 5.
Note 6.
Note 7.
Note 8.
Note 9.
Note 10. Any GPIO can be used as a Power Management Event (PME) wakeup input without restriction. PMEs are supported for both Sleep
Note 11. GPIOH_IN_EN (GPIO Offset A0h) and GPIOH_IN_AUX1_SEL (GPIO Offset B4h) are enabled.
Note 12. Reset default.
Note 13. If the GPIO28 function is desired, the power button functionality in the PMC must be disabled before the IN_AUX1 function is dis-
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Any GPIO can be used as an interrupt input without restriction. These particular GPIOs have PCI I/O buffer types for complete
PCI bus compatibility. However, such strict compatibility is generally not required.
Applications incorporating a CRT often require support for the Display Data Channel (DDC) serial interface. These particular
GPIOs have open collector SMB I/O buffer types required by the DDC interface specification. The DDC protocol supplied by AMD
is provided via software implementation and defaults to these GPIOs. However, any design not needing strict DDC electrical sup-
port can use other GPIOs. Lastly, applications not incorporating DDC use at all may use these GPIOs without restriction.
See section 5.15.5.6 "Auto-sense" on page 165 for an explanation of auto-sense.
Internal signal is active high. Use GPIO invert for active low external.
When both IN_AUX1 and AUX_OUTx are enabled, I/O direction on this ball is controlled by the SMB Controller.
and Standby wakeup. However, if Standby wakeup is desired, a GPIO on the Standby power domain must be used. Only
GPIO[24:28] are supplied via the Standby Power Rail and are typically used as follows:
GPIO24 - Auxiliary Working Power Control
GPIO25 - Low Battery Alarm
GPIO26 - PME
GPIO27 - MFGPT setup to provide a blink
GPIO28 - Power Button
Depending on application use, the PME function could be moved to GPIO[24:27]. If only external PME wakeup from Sleep is re-
quired, the PME function could be moved to GPIO[0:23]. Lastly, the PME function could simply not be used, making more GPIOs
available for other uses.
abled.
Defaults to LPC use. Use Ball Options MSR (see Table 3-6 on page 34) to switch this ball to GPIO control.
31506B
AMD Geode™ CS5535 Companion Device Data Book
Signal Definitions