blob: 7d2b16efcfd826a2d7abb1d88e4e522eeb8d7fed (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
|
-------------------------------------------------------------------------------
SD card / SD mode / R-Car H2
-------------------------------------------------------------------------------
This is a set of example captures of SD cards in "SD mode" (not SPI mode).
The cards were used in a board called "Lager" powered by a Renesas R-Car H2
(r8a7790) SoC. The SD card was a Samsung PRO 32GB microSDHC.
Details:
http://elinux.org/R-Car/Boards/Lager
http://www.samsung.com/de/consumer/memory-storage/memory-storage/memory-cards/MB-MG32EA/EU/
Logic analyzer setup
--------------------
The logic analyzer used was a OpenBench Logic Sniffer at 50MHz.
For easier measurement, the Linux driver for the SD controller was forced
at 1 bit bus width and 25MHz max frequency.
Obtained via PulseView, so no command-line.
Probe SD card
-------------------
0 CMD
1 CLK
|
