Part Number: LM98725 Summary: All signals toggle indefinitely except SH1. There is no "readout window" I can catch on the scope by triggering to SH1. Please help. Details: I lock the registers (start CCD readout), and watch SH1, PHIA1, PHIB1, CP, RS with scope (high-Z), not loaded at all. When I toggle "SH1 active" register field on/off in unlocked state, the corresponding output changes DC value from 0 to 3.3V and vice versa. This means, I look at the proper output. But it doesn't toggle during locked state. Total current consumption: locked: 124mA, unlocked: 116mA The registers I touch during configuration: Signal outputs (5 MHz input clock): My test circuit based on datasheet circuit:
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Forum Post: LM98725: SH1 output doesn't toggle during CCD readout. phiA, CP, RS toggle, but look bad
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