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This is an example capture of a Macronix MX25L1605D (MX25L1605DPI-12G)
SPI flash chip (16MBit == 2Mbyte; NOR flash) that is being written to.
The SPI programmer hardware used is openbiosprog-spi, see
http://randomprojects.org/wiki/Openbiosprog-spi
The software used for programming it is flashrom, see
http://flashrom.org/FT2232SPI_Programmer
The command line used was
flashrom -p ft2232_spi:type=2232H,port=A -w filename
where 'filename' is a 2MByte file filled with lots of consecutive "HelloWorld"
ASCII character strings.
The logic analyzer used for capturing is a Saleae Logic at a sample rate
of 2MHz. The capture was done using sigrok (02/2011) via
sigrok-cli -d 0:samplerate=2MHz --time 5s -o foo
The Saleae Logic probes were connected like this to the MX25L1605D chip:
Probe SPI chip pin
------------------------
1 (black) CS#
2 (brown) SO/SIO1 (a.k.a MISO)
3 (red) SCLK
4 (orange) SI/SIO0 (a.k.a MOSI)
5 (yellow) WP#/ACC
6 (green) HOLD#
GND GND
The capture is only partial, it contains 5 seconds of the write process
(it does not contain the chip identification, chip erase, etc. which comes
before the actual write parts; it also does not contain anything after those
5 seconds, the flashrom command took quite a bit longer than 5 seconds).
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