58.8.2 System Power Consumption in Applicative Use Cases
Table 58-59 gives the processor
power consumption in the following conditions:
- fCPU_CLK = 600 MHz
- fMCK = 200 MHz
- I & D caches enabled
- External SDRAM memory: 16-bit DDR2 operating at 200 MHz
- Uses cases are run on Linux®
- Current consumptions are measured according to figure Current Measurement Schematic for Applicative Use Cases. Note that external component current consumptions are not counted. Either the 24-bit display or the 8-bit image sensor is connected to the SAM9X60, but not both.
| Use Case | Description of Test |
|---|---|
| 1 | After Linux boot root prompt |
| 2 | Video playback from USB mass storage (mp4 format, 480x272 @ 24fps, bitrate = 369 kbps) |
| 3 | Waveform (WAV) audio file decoding and playback on I2S. WAV file on USB mass storage |
| 4 | SAM9X60 running as iPerf server |
| 5 | Run Bonnie++ on USB mass storage |
| 6 | SAM9X60 running 2D graphic benchmark |
| 7 | Image sensor video recording with QVGA resolution - 10 fps |
| Use Case | VDDCORE (1.15V) | VDDIOM (1.8V) | VDDIN33 (3.3V) | VDDNF (1.8V) | VDDPIOP0 (3.3V) | VDDPIOP1 (3.3V) | Unit | Total Power | Unit |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 60.25 | 35.7 | 10 | 3.9 | 0.17 | 0.011 | mA | 174 | mW |
| 2 | 101 | 72.7 | 15.8 | 3.5 | 0.71 | 8.7 | 337 | ||
| 3 | 64 | 41.4 | 15.8 | 3.75 | 0.75 | 0.003 | 209 | ||
| 4 | 77.5 | 92.7 | 10 | 3.55 | 0.168 | 0.006 | 296 | ||
| 5 | 102 | 60 | 19.8 | 3.2 | 0.183 | 0.006 | 297 | ||
| 6 | 98 | 97 | 10 | 3.4 | 0.71 | 8.5 | 357 | ||
| 7 | 101 | 61.1 | 15.8 | 3.1 | 0.84 | 26 | 372 |