NJU26040V-16A NJRC [New Japan Radio], NJU26040V-16A Datasheet - Page 7

• Manufacturer Part Number: NJU26040V-16A
• Description: Digital Signal Processor for 2ch Speaker System
• Manufacturer: NJRC [New Japan Radio]

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Note: If input and output of an audio signal stop and an audio interface stops, WDC can’t output.
Ver.2008-03-06
The NJU26040-16A outputs clock pulse through WDC (No.26) pin during normal operation. (Table 9)
The NJU26040-16A generates a clock pulse through the WDC terminal after resetting the NJU26040-16A. The WDC clock is
useful to check the status of the NJU26040-16A operation. For example, a microcomputer monitors the WDC clock and
checks the status of the NJU26040-16A. When the WDC clock pulse is lost or not normal clock cycle, the NJU26040-16A
does not operate correctly. Then reset the NJU26040-16A and set up the NJU26040-16A again.
NJU26040-16A restricts operation at power on by setting PROC pin and MUTEb pin (Table 8). These pins are input pin.
However, these pins operate as bi-directional pins. Connect with V
Pin setting
Watch Dog Clock
The NJU26040-16A operates default command setting after resetting the NJU26040-16A. In addition, the
Table 7
Table 8 Watch Dog Clock Output Cycle
That is because it has controlled based on the signal of an audio interface.
Pin No.
28
27
WDC Output Cycle (Low/High) Time
Pin setting
Symbol
PROC
MUTEb
100ms
Setting
“High”
“Low”
“High”
“Low”
Function
The NJU26040-16A operates default setting after reset.
The NJU26040-16A does not operate after reset. Sending start
command is required for starting operation.
Master volume is set 0dB after reset.
Master volume is set mute after reset.
DDIO
or V
SSIO
through 3.3kΩ resistance.
NJU26040-16A
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