projects / sigrok-dumps.git / blame
| Commit | Line | Data |
|---|---|---|
| 04aceb21 ZD |
1 | ------------------------------------------------------------------------------- |
| 2 | SD card / SD mode / i.MX6 | |
| 3 | ------------------------------------------------------------------------------- | |
| 4 | ||
| 5 | This is a set of example captures of SD cards in "SD mode" (not SPI mode). | |
| 6 | ||
| 7 | The cards were used in an eval board based on the Freescale i.MX6 Quad. | |
| 8 | ||
| 9 | - Working: Transcend 16GB micro SDHC | |
| 10 | - Failing: SanDisk 2GB class 2 SD card | |
| 11 | ||
| 12 | Details: | |
| 13 | http://wandboard.org/ | |
| 14 | http://boundarydevices.com/products/nitrogen6x-board-imx6-arm-cortex-a9-sbc/ | |
| 15 | ||
| 16 | ||
| 17 | Logic analyzer setup | |
| 18 | -------------------- | |
| 19 | ||
| 20 | The logic analyzer used was a Saleae Logic16 (at 40MHz): | |
| 21 | ||
| 22 | Probe SD card | |
| 23 | ------------------- | |
| 24 | 0 CLK | |
| 25 | 1 DAT0 | |
| 26 | 2 DAT1 | |
| 27 | 3 DAT2 | |
| 28 | 4 CMD | |
| 29 | 5 DAT3 | |
| 30 |