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SiLabs CP2110 serial-over-HID, UT612 LCR meter
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This is a capture of UART-over-HID communication to a UNI-T UT612 LCR meter
which contains the SiLabs CP2110 HID chip and the ES51919 LCR meter chip.
UART communication uses 9600/8n1, USB HID runs at full speed (USB1.1 12MHz).
The LCR meter actually exclusively transmits data to the PC's RX line. The
PC's TX traffic is just a development hack in preparation of bidirectional
communication where cables support it.
Logic analyzer setup
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The Asix Sigma analyzer was set to 50MHz samplerate. Capture length is 200M
samples, which translates to four seconds duration.
Probe CP2110 signals
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1 USB D+
2 USB D-
3 UART TX (sigrok to meter)
4 UART RX (meter to sigrok)
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