SVI3 Protocolos suportados
AlimentaçãoAMD Serial VID Interface 3
O que é SVI3?
SVI3 (Serial VID Interface 3) is AMD's proprietary serial bus protocol for communication between AMD processors and voltage regulator modules (VRMs). SVI3 uses three signals — SVC (clock), SVD (data), and SVT (telemetry) — to manage dynamic voltage and frequency scaling. The protocol enables the processor to command voltage changes, read VRM telemetry (current, temperature), and manage power states. SVI3 operates at clock speeds up to 50 MHz with a voltage range of 1.08V to 1.98V, and includes features for fast transient response and power state management that are critical for AMD Ryzen and EPYC processor platforms. Acute decoders cover SVI3 Rev. 1.01 and Rev. 2.0. Engineers debugging AMD power delivery systems need SVI3 decode to verify voltage requests, telemetry accuracy, and VRM response timing.
SVI3 Referência rápida
| type | Serial, synchronous |
| signals | SVC, SVD, SVT (3 wires) |
| max Speed | Up to 50 MHz |
| voltage Range | 1.08V – 1.98V |
| standard | AMD SVI3 Rev. 1.01, Rev. 2.0 |
Aviso importante
SVI3 protocol support is available only on the MSO2216B, MSO3124H, and MSO3124V. SVI3 decoding is provided to end customers upon request, and only to users who have been approved by AMD.
Pronto para analisar este protocolo?
Veja como os instrumentos Acute capturam e decodificam este protocolo em tempo real. Solicite uma demo ou entre em contato com nossa equipe.
Como analisar SVI3 com instrumentos Acute
Conecte seu analisador lógico Acute aos sinais SVI3 SVC, SVD e SVT entre o processador AMD e o regulador de tensão.
Conecte um fio terra a referência de terra da placa alvo.
No software Acute, selecione o SVI3 protocol decoder e atribua SVC, SVD e SVT aos canais de entrada correspondentes.
Configure o decodificador para expected bus speed and protocol version.
Capture e visualize os SVI3 transactions showing voltage ID commands, telemetry readbacks, and power state transitions.