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GS9090B Datasheet(PDF) 26 Page - Gennum Corporation |
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GS9090B Datasheet(HTML) 26 Page - Gennum Corporation |
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26 / 71 page  GS9090B Data Sheet 40749 - 2 January 2007 26 of 71 In Manual mode, the SMPTE_BYPASS and DVB_ASI input pins must be set LOW. If the GS9090B achieves lock to the input data signal, data will be passed directly to the parallel outputs without any further processing (see Section 3.8). 3.5.2 Auto Mode The GS9090B is in Auto mode when the AUTO/MAN input pin is set HIGH. In this mode, SMPTE_BYPASS and DVB_ASI become output status pins, as shown in Table 3-1. 3.5.3 Manual Mode The GS9090B is in Manual mode when the AUTO/MAN input pin is set LOW. In this mode, the SMPTE_BYPASS and DVB_ASI pins become input signals, and the operating mode of the device is set by these pins as shown in Table 3-2 . Table 3-1: Auto Mode Output Status Signals Pin Settings Format SMPTE_BYPASS DVB_ASI SD SMPTE HIGH LOW DVB-ASI LOW HIGH NOT SMPTE OR DVB-ASI* LOW LOW *NOTE: In this case the device will not be locked (LOCKED = LOW), and all digital output pins except PCLK will be set LOW (see Section 3.5.1) Table 3-2: Manual Mode Input Status Signals Pin Settings Format SMPTE_BYPASS DVB_ASI SD SMPTE HIGH LOW DVB-ASI X HIGH NOT SMPTE OR DVB-ASI (Data-Through mode)* LOW LOW *NOTE: See Section 3.8 for more detail on Data-Through mode |
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Similar Description - GS9090B |
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