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zh/docs/dev_doc/evb/a316_hf_dac_v1/LP_Testing_Guide.md Normal file
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title: A316-HF-DAC-V1 USB HiFi音频解码器评估板使用手册
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--8<-- "common/phaten_xmos_support_img.md"
# 低功耗测试指南
## 1. 测试点接线说明
### 1.1 测试点位置
1. USB-5V
2. A316 - 3.3V
3. A316 - 1.8V
4. A316 - 0.9V
![测试点位置示意图](/assets/images/evb/a316_hf_dac/Low_power_Consumption_Testing_Guide/低功耗指导1.PNG)
## 2. 测试方法说明
### 2.1 测试步骤（以 USB-5V 为例）
1. 断开需要测试的测试点
2. 接上 USB - TYPE-C 供电
3. 串接电流表
4. 读取测量电流
![测试方法示意图](/assets/images/evb/a316_hf_dac/Low_power_Consumption_Testing_Guide/低功耗指导2.PNG)
## 3. 测试结果
### 3.1 功耗测试数据
!!! info "XU316 USB低功耗HiFi解码功耗测试对比结果"
<div class="sticky-column" markdown>
| 芯片类型 | DSD 512 | PCM 768KHz | PCM 384KHz | PCM 192KHz |
|---------|---------|------------|------------|------------|
| **低功耗芯片** | 113 mW | 146 mW | 128 mW | 123 mW |
| **标准功耗芯片** | 227 mW | 232 mW | 227 mW | 222 mW |
| **节省功耗** | 114 mW | 86 mW | 99 mW | 99 mW |
| **节省功耗%** |50.22% | 37.07% | 43.61% | 44.59% |
</div>