• Ultra Low Voltage (ULV) mode to optimize the SOC voltage during idle/static
screen mode.
• Deep sleep on most clock domains to transition the clock to a very low frequency
state during idle.
• Support for ACPI D-states and BACO (Bus Alive Core Off) state.
• Critical Temperature Fault (CTF) support for fast shutdown of the voltage
regulators in the event that the GPU temperature exceeds a critical limit.
• Support for VRHOT and external thermal interrupt handling.
• Support for HBM CATTRIP handling to shut down the GPU in case of HBM
memory reaching a critical temperature.
2.8 Spread-spectrum Support
2.8.1 Engine Spread-spectrum Support
Internal engine spread-spectrum support programmable from 0% to 2% down spread
with modulation frequencies from 30 kHz to 33 kHz.
2.8.2 DisplayPort Internal Spread-spectrum Support
• From 0.25% to 0.5% down spread.
• Modulation frequency between 30 kHz and 33 kHz.
2.9 Internal Thermal Sensor
"Vega 10" has an integrated thermal sensor that offers the following advantages:
• Provides GPU die temperature (accuracy ± 3℃) without the need for an external
chip.
• High- and low-notification limits can be defined to generate interrupts and to
change power states.
• Can be used to control a fan through PWM (see Table 3–17 (p. 33)).
• A critical temperature limit can be defined to allow the system to protect the
GPU from damage (see CTF in Table 3–17 (p. 33)).
• Temperature information can be provided through software (ACPI control
methods) or directly through the SMBus hardware interface.
2.10 Thermal Diode
The thermal diode in "Vega 10" is a grounded collector PNP BJT. The thermal diode
has two pins for its interface—DPLUS and DMINUS (see Table 3–17 (p. 33)).
DPLUS connects to the emitter of the BJT while DMINUS connects to its base. The
collector is tied to substrate ground.
16 Functional Overview
"Vega 10" Databook
56006_1.00
© 2017 Advanced Micro Devices, Inc.
AMD Confidential - Do not duplicate.
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