X-Git-Url: http://sigrok.org/gitweb/?a=blobdiff_plain;f=spi%2Fmx25l1605d%2FREADME;h=920ae313a1643f9909e937fe8d18572296a82604;hb=b5ad4e978034aa34ecb579314ce08761b576f44f;hp=f65d44b7c390947731e6694f218eb580e22cdf60;hpb=d83eec54eb17d3f39e8a9e3cd8ae6af433e538cd;p=sigrok-dumps.git

diff --git a/spi/mx25l1605d/README b/spi/mx25l1605d/README
index f65d44b..920ae31 100644
--- a/spi/mx25l1605d/README
+++ b/spi/mx25l1605d/README
@@ -1,5 +1,10 @@
-This is an example capture of a Macronix MX25L1605D (MX25L1605DPI-12G)
-SPI flash chip (16MBit == 2Mbyte; NOR flash) that is being written to.
+-------------------------------------------------------------------------------
+Macronix MX25L1605D (SPI flash chip)
+-------------------------------------------------------------------------------
+
+This is a set of example captures of a Macronix MX25L1605D (MX25L1605DPI-12G)
+SPI flash chip (16MBit == 2Mbyte; NOR flash) that is probed, being written to,
+read, or erased.
 
 The SPI programmer hardware used is openbiosprog-spi, see
 
@@ -9,32 +14,94 @@ The software used for programming it is flashrom, see
 
   http://flashrom.org/FT2232SPI_Programmer
 
-The command line used was
+
+Logic analyzer setup
+--------------------
+
+The logic analyzer used was a ChronoVu LA8 (at 25MHz):
+
+  Probe       MX25L1605D pin
+  --------------------------
+  0 (green)   CS#
+  1 (orange)  SO/SIO1 (a.k.a MISO)
+  2 (white)   SCLK
+  3 (red)     SI/SIO0 (a.k.a MOSI)
+  4 (gray)    WP#/ACC
+  5 (brown)   HOLD#
+
+
+Probing
+-------
+
+The flashrom command line used was:
+
+  flashrom -p ft2232_spi:type=2232H,port=A
+
+The sigrok command line used was:
+
+  sigrok-cli -d 0:samplerate=25mhz --samples 8388608 \
+             -p '1=CS#,2=MISO,3=SCLK,4=MOSI,5=WP#,6=HOLD#' \
+             --wait-trigger --triggers 3=1 \
+             -o mx25l1605d_probe.sr
+
+The capturing starts when the SCLK signal is high for the first time
+(it's low per default). We capture as many samples as fit into the 8MByte
+buffer of the logic analyzer.
+
+The capture might not contain the complete flashrom chip detection sequence.
+
+
+Writing
+-------
+
+The flashrom 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
+The sigrok command line used was:
 
-  sigrok-cli -d 0:samplerate=2MHz --time 5s -o foo
+  sigrok-cli -d 0:samplerate=25mhz --samples 8388608 \
+             -p '1=CS#,2=MISO,3=SCLK,4=MOSI,5=WP#,6=HOLD#' \
+             -o mx25l1605d_write.sr
 
-The Saleae Logic probes were connected like this to the MX25L1605D chip:
+The capture is only partial, it contains a small part 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 that,
+the flashrom command took quite a bit longer than what the capture shows).
 
-  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).
+Reading
+-------
+
+The flashrom command line used was:
+
+  flashrom -p ft2232_spi:type=2232H,port=A -r dump.dd
+
+The sigrok command line used was:
+
+  sigrok-cli -d 0:samplerate=25mhz --samples 8388608 \
+             -p '1=CS#,2=MISO,3=SCLK,4=MOSI,5=WP#,6=HOLD#' \
+             -o mx25l1605d_read.sr
+
+The capture only contains a small part of the read procedure. The data in
+the chip consists of consecutive "HelloWorld" ASCII strings.
+
+
+Erasing
+-------
+
+The flashrom command line used was:
+
+  flashrom -p ft2232_spi:type=2232H,port=A -E
+
+The sigrok command line used was:
+
+  sigrok-cli -d 0:samplerate=25mhz --samples 8388608 \
+             -p '1=CS#,2=MISO,3=SCLK,4=MOSI,5=WP#,6=HOLD#' \
+             -o mx25l1605d_erase.sr
+
+The capture does not contain the full erase process, only a small part of it.