{'fraction_non_alphanumeric': 0.026373626373626374, 'fraction_numerical': 0.006593406593406593, 'mean_word_length': 5.162162162162162, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Front-end interface of the SVD readout system for BELLE

The data-acquisition system for a Si micro-vertex detector of the BELLE experiment is described with special emphasis placed on the front-end circuits and their interfaces. The description includes a 128-channel preamplifier chip, a silicon-based double-sided hybrid card, and readout control chips for digital interfaces, which are discussed in terms of both architectural and operational aspects.