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Datenblatt-Suchmaschine für elektronische Bauteile |
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Datenblatt-Suchmaschine für elektronische Bauteile |
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AK7755EN Datenblatt(PDF) 27 Page - Asahi Kasei Microsystems |
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AK7755EN Datenblatt(HTML) 27 Page - Asahi Kasei Microsystems |
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27 / 109 page  [AK7755] 014006643-E-00 2014/10 - 27 - 2-1. Master Mode (CKM mode 0, 1: Using XTI Input Clock) fs: Sampling Frequency CKM mode CKM [2:0] XTI Input Frequency Range (MHz) Use of Chrystal Oscillator fs:48kHz series fs:44.1kHz series 0 000 12.288MHz 11.2896MHz 11.0 to 12.4 Available 1 001 18.432MHz 16.9344MHz 16.7 to 18.6 Available Input system clock to the XTI pin by setting BITFS[1:0] bits. The internal counter which is synchronized to XTI generates LRCK(1fs) and BICK(64fs, 48fs, 32fs, 256fs). BICK frequency can be selected by BITFS[1:0] bits. The BICK output will be in two different frequencies if setting BITFS[1:0] bits = 1h (48kHz) when the sampling frequency is 12kHz, 24kHz, 48kHz or 96kHz (DFS[2:0]). LRCK and BICK are not output during system reset. XTO XTI XTO XTI External Clock AK7755 AK7755 Figure 17. Using Crystal Oscillator (CKM mode 0/1) Using External Clock (CKM mode 0/1) 2-2. Slave Mode1 (CKM mode 2: XTI Input Clock） fs: sampling frequency CKM mode CKM [2:0] XTI Input Frequency Range Use of Chrystal Oscillator fs:48kHz fs:44.1kHz (MHz) 2 010 12.288MHz 11.2896MHz 11.0 to 12.4 Not Available Required System Clocks are XTI, LRCK and BICK. XTI and LRCK must be synchronized, but the phase between these clocks is not important. The system sampling rate is controlled by DFS[2:0] bits. The sampling frequency of BICK is set by BITFS[1:0] bits. 2-3. Slave Mode 2 (CKM mode 3: BICK Input Clock) In CKM mode 3, required system clocks are BICK and LRCK. In this mode, BICK is used for clock source instead of XTI. This clock is multiplied directly by a PLL to generate the master clock (MCLK). Therefore BICK with two different frequencies cannot be used. BICK and LRCK must be synchronized. Set BICK frequency for LRCK by BITFS[1:0] bits. The sampling rate is determined by DFS[2:0] bits setting. In applications which do not need the XTI pin of the AK7755, leave this pin open. |
Ähnliche Teilenummer - AK7755EN_16 |
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Ähnliche Beschreibung - AK7755EN_16 |
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