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NJU26203V Datasheet(PDF) 9 Page - New Japan Radio |
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NJU26203V Datasheet(HTML) 9 Page - New Japan Radio |
9 / 11 page NJU26203 - 9 - Ver.2008-12-10 Pin setting The NJU26203 operates default command setting after resetting the NJU26203. In addition, the NJU26203 restricts operation at power on by setting PROC pin and MUTEb pin. These pins are input pin. However, these pins operate as bi-directional pins. Connect with VDDIO or VSSIO through 3.3kΩ resistance. Table 7 Pin setting Pin No. Symbol Setting Function “High” The NJU26203 operates default setting after reset. 13 PROC “Low” The NJU26203 does not operate after reset. Sending start command is required for starting operation. “High” Master volume is set 0dB after reset. 11 MUTEb “Low” Master volume is set mute after reset. WatchDog Clock The NJU26203 outputs clock pulse through WDC (Pin No.12) during normal operation. The WDC clock is useful to check the status of the NJU26203 operation. For example, a microcomputer monitors the WDC clock and checks the status of the NJU26203. When the WDC clock pulse is lost or not normal clock cycle, the NJU26203 does not operate correctly. Then reset the NJU26203 and set up the NJU26203 again. The WDC clock is able to be variable for 0msec to 100msec by command. Default setting of WDC clock is 100msec. The WDC pin is open drain output. The WDC pin setting (Table 8) Table 8 WDC pin setting Note: The cycle of WDC output is rough. Because WDC output inserts in the process of sound processing. In slave mode, when there is no input of BCKI/LRI, WDC can’t output. It is required to set up a sampling rate correctly. Pin No. Symbol Setting WDC pin is used. Connect with VDDIO through 3.3kΩ resistance. 12 WDC WDC pin is not used. Connect with VSSIO through 3.3kΩ resistance. Do not open WDC pin. |
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