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Moteur de recherche de fiches techniques de composants électroniques |
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Moteur de recherche de fiches techniques de composants électroniques |
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ISL5416 Fiches technique(PDF) 8 Page - Intersil Corporation |
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ISL5416 Fiches technique(HTML) 8 Page - Intersil Corporation |
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8 / 71 page  8 SYNCInX Use SYNCInX main purpose is as a processing start-up signal after a reset to align the start of processing of multiple channels or chips. This assures that the carrier phases have a known relationship and that the output timing aligns for multiplexing outputs. It can also be used after start-up as a system timing synchronization signal. Two SYNCInX signals are provided so that one can be used as a regularly occurring signal (such as at time slot boundaries) and one as an infrequent signal (such as at start up or at 1 pps). If more than one air interface standard is processing in one part, one SYNCInX signal could be used for the slot timing for each standard. Register updates from a processor write are synchronized to the clock, so that the register updates in multiple channels of the same part are time aligned. However, when synchronizing multiple parts the processor will need knowledge of the SYNCInX timing so that enabling the SYNCInX in multiple parts occurs between SYNCInX pulses. Alternatively, SYNCIn1 could be used as a regularly occurring SYNCI signal and SYNCIn2 could be a gated version. The channel processing control register might only be updated on SYNCIn2 and the other SYNCI functions would respond to SYNCIn1. CLKC CLKX CLKC CLKX R1 R2 R3 R4 R1 R2 R3 R4 ^ ^ ^ INTERPOLATE SLOT# R1 R2 R3 R4 CLK/CLK M U X M U X CLKX/CLKC CLKX CLKC FIGURE 1. INPUT SECTION F M T D M U X R M A P R R E G R E G R E G R E G ^ R E G ^ M U X PROCESSING ENABLE TO CHANNELS AND RANGE CONTROL TO SERIAL FREQUENCY OFFSET CLK MANTISSA EXPONENT DIN (ONLY) OBIN BUS REVERSE FLOAT/FIX (16:0) (0:16) ENIX XIN(16:0) NOTE: To simplify the board routing, each of the four input data busses can be reversed, MSB for LSB (see IWA = 0*00h, bit 4) ISL5416 |
Numéro de pièce similaire - ISL5416_04 |
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Description similaire - ISL5416_04 |
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