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According to the diagnostic mode of the original firmware, the display can apparently be one of two types: Visionox or WiseChip. The Visionox display could be a Visionox M00230/M00231 OLED module, the display controller is unknown. The WiseChip display appears to be controlled by a SEPS114A OLED controller. The tuner chip is the SiLabs Si4703, which is the RDS capable brother of the SiLabs Si4702 (used in several other Sansa players).
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