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5 This directory contains a capture of the communication between a Cypress
6 CY7C63813 and an Avago ADNS-5020 optical mouse sensor.
8 This is the internals of a fairly generic Dell optical mouse.
10 It is not nearly a complete sample of what types of traffic are possible,
11 specifically, it doesn't include a capture of "Burst Mode" traffic, which the
12 mouse firmware doesn't appear to use, even though Avago "highly recommends"
13 that burst mode be used for all devices.
16 adns5020-cy7c63813_init.sr
17 --------------------------
19 Captures the traffic from power on of the device (USB plug in) for 1 second.
20 Traces the initialization and reset pins as well as some general traffic.
26 The logic analyzer used was a generic Saleae Logic clone (at 6MHz).
28 Avago documents max speed as 1MHz. 6MHz is used to try and avoid catching
32 --------------------------
33 0 VDD Used to trigger sampling
34 3 SDIO Bidir, but we use the MOSI stack from SPI
38 7 XY_LED Chip LED control, not used by this configuration
44 The sigrok command line used was:
46 sigrok-cli -d fx2lafw --config samplerate=6M --time 1s \
47 -o adns5020-cy7c63813_init.sr -t VDD=r \
48 --channels 3=SDIO,5=NCS,4=SCK,6=NRESET,7=XY_LED,0=VDD