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AK4635 Datasheet(PDF) 13 Page - Asahi Kasei Microsystems |
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AK4635 Datasheet(HTML) 13 Page - Asahi Kasei Microsystems |
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13 / 81 page  [AK4635] Rev. 0.6 2007/10 - 13 - Parameter Symbol min typ max Units PLL Slave Mode (PLL Reference Clock: FCK pin) (Figure 10, Figure 11) FCK: Frequency DSP Mode: Pulse Width High Except DSP Mode: Duty Cycle fFCK tFCKH duty 7.35 tBCK −60 45 8 - - 48 1/fFCK −tBCK 55 kHz ns % BICK: Period Pulse Width Low Pulse Width High tBCK tBCKL tBCKH 1/64fFCK 0.4 x tBCK 0.4 x tBCK - - - 1/16fFCK - - ns ns ns PLL Slave Mode (PLL Reference Clock: BICK pin) (Figure 10, Figure 11) FCK: Frequency DSP Mode: Pulse width High Except DSP Mode: Duty Cycle fFCK tFCKH duty 7.35 tBCK −60 45 8 - - 48 1/fFCK −tBCK 55 kHz ns % BICK: Period (PLL3-0 bit = “0001”) (PLL3-0 bit = “0010”) (PLL3-0 bit = “0011”) Pulse Width Low Pulse Width High tBCK tBCK tBCK tBCKL tBCKH - - - 0.4 x tBCK 0.4 x tBCK 1/16fFCK 1/32fFCK 1/64fFCK - - - - - - - ns ns ns ns ns PLL Slave Mode (PLL Reference Clock: MCKI pin) (Figure 12) MCKI Input: Frequency Pulse Width Low Pulse Width High fCLK fCLKL fCLKH 11.2896 0.4/fCLK 0.4/fCLK - - - 27.0 - - MHz ns ns MCKO Output: Frequency Duty Cycle except fs=29.4kHz, 32kHz fs=29.4kHz, 32kHz (Note 28) fMCK dMCK dMCK - 40 - 256 x fFCK 50 33 - 60 - kHz % % FCK: Frequency DSP Mode: Pulse width High Except DSP Mode: Duty Cycle fFCK tFCKH duty 8 tBCK −60 45 - - - 48 1/fFCK −tBCK 55 kHz ns % BICK: Period Pulse Width Low Pulse Width High tBCK tBCKL tBCKH 1/64fFCK 0.4 x tBCK 0.4 x tBCK - - - 1/16fFCK - - ns ns ns Audio Interface Timing DSP Mode: (Figure 13, Figure 14) FCK “ ↑” to BICK “↑” (Note 29) FCK “ ↑” to BICK “↓” (Note 30) BICK “ ↑” to FCK “↑” (Note 29) BICK “ ↓” to FCK “↑” (Note 30) BICK “ ↑” to SDTO (BCKP bit= “0”) BICK “ ↓” to SDTO (BCKP bit= “1”) SDTI Hold Time SDTI Setup Time tFCKB tFCKB tBFCK tBFCK tBSD tBSD tSDH tSDS 0.4 x tBCK 0.4 x tBCK 0.4 x tBCK 0.4 x tBCK - - 50 50 - - - - - - - - - - - - 80 80 - - ns ns ns ns ns ns ns ns Except DSP Mode: (Figure 16) FCK Edge to BICK “ ↑” (Note 31) BICK “ ↑” to FCK Edge (Note 31) FCK to SDTO (MSB) (Except I2S mode) BICK “ ↓” to SDTO SDTI Hold Time SDTI Setup Time tFCKB tBFCK tFSD tBSD tSDH tSDS 50 50 - - 50 50 - - - - - - - - 80 80 - - ns ns ns ns ns ns |
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