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AKD4633-A Datasheet(PDF) 4 Page - Asahi Kasei Microsystems |
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AKD4633-A Datasheet(HTML) 4 Page - Asahi Kasei Microsystems |
4 / 38 page ASAHI KASEI [AKD4633-A] <KM079406> 2007/04 - 4 - (2) Evaluation of loop-back mode (A/D → D/A) : PLL, Slave Mode (PLL Reference CLOCK: MCKI pin) a) Set up jumper pins of MCKI clock X’tal of 12.288MHz (Default) is set on the AKD4633-A. In this case, the AK4633VN corresponds to PLL reference clock of 12.288MHz. In this evaluation mode, the output clock from MCKO-pin of the AK4633VN is supplied to a divider (U3: 74VHC4040), BICK and FCK clocks are generated by the divider. Then “MCKO bit” in the AK4633VN should be set to “1”. When an external clock through a RCA connector (J8: EXT/BICK) is supplied, select EXT on JP21 (MCLK_SEL) and short JP17 (XTE). JP23 (EXT1) and R26 should be properly selected in order to match the output impedance of the clock generator. b) Set up jumper pins of BICK clock c) Set up jumper pins of FCK clock d) Set up jumper pins of DATA When the AK4633VN is evaluated by loop-back mode (A/D → D/A), the jumper pins should be set to the following. JP17 XTE MCLK_SEL JP21 JP18 MKFS 256fs 512fs 1024fs XTL DIR EXT MCKO JP6 MCKI JP28 FCK ADC DIR JP22 FCK_SEL 2fs EXT 1fs JP26 4631_SDTI ADC DAC/LOOP JP30 SDTI DIR ADC JP29 JP20 BICK JP27 BICK_INV THR INV DIR ADC BICK THR INV BICK_SEL JP19 EXT 16fs 32fs 64fs |
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