NJU26203 New Japan Radio Co.,Ltd, NJU26203 Datasheet - Page 9

• Manufacturer Part Number: NJU26203
• Description: Nju26203 Dolby Pro Logic Ii Decoder
• Manufacturer: New Japan Radio Co.,Ltd

Note: The cycle of WDC output is rough. Because WDC output inserts in the process of sound processing.
Ver.2007-02-28
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 V
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.
Pin setting
WatchDog Clock
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.
The NJU26203 operates default command setting after resetting the NJU26203. In addition, the NJU26203
The NJU26203 outputs clock pulse through WDC (Pin No.12) during normal operation. The WDC clock is useful
The WDC pin is open drain output. The WDC pin setting (Table 8)
Table 7
Table 8 WDC pin setting
Pin No.
Pin No.
13
11
12
Pin setting
MUTEb
Symbol
PROC
Symbol
WDC
WDC pin is used.
WDC pin is not used.
Setting
“High”
“High”
“Low”
“Low”
Function
The NJU26203 operates default setting after reset.
The NJU26203 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
Connect with V
Connect with V
Do not open WDC pin.
or V
SSIO
through 3.3k
DDIO
SSIO
Setting
through 3.3k
through 3.3k
Ω
resistance.
Ω
Ω
resistance.
resistance.
NJU26203
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