LC8904 Sanyo, LC8904 Datasheet - Page 17

• Manufacturer Part Number: LC8904
• Description: Digital Audio Interface Receiver
• Manufacturer: Sanyo

Analog Source Mode
The LC8904Q enters analog source mode in the following two cases:
1. Analog source mode is selected from the microprocessor interface.
2. If the input pin specified for data demodulation goes to the no signal state.
In this mode, the clock that operates the whole system is taken from the crystal oscillator clock, and the PLL and data
demodulation circuits are stopped. The BCLK, LRCK, CLKOUT1, and CLKOUT2 clocks are output.
The output pins have the following functions in analog source mode:
1. DOUT/V
2. ERROR
3. SUB1 and SUB2
4. DATAOUT
5. EMPHA
6. Microprocessor interface codes
Crystal Oscillator
1. A built-in detector circuit determines whether or not a data input signal is present. This circuit operates from either
2. The XIN and XOUT pins include a built-in oscillator amplifier circuit, and operate as follows when a crystal
Data Output Timing
1. Data is output in synchronization with the falling edge of the BCLK signal.
2. Data, BCLK, and LRCK are output in synchronization with the rising edge of the 256fs clock.
3. The figure on the following page shows the data output timing.
Data output as specified by the microprocessor interface
Outputs the error state, i.e. a high level.
These pins output the “#1” lock error state.
Outputs the lock error state, i.e., a low level.
Outputs the lock error state, i.e., a low level.
Input codes: The codes loaded from the microprocessor interface are retained.
Output codes: The same codes as output for a PLL lock error.
the VCO or the crystal oscillator clock. When the power supply is coming up, this clock is supplied from the VCO,
and if a no-data state is detected, the system switches to the crystal oscillator clock. Here, if the clock is not supplied
from the crystal oscillator after a no-data state is detected, the whole system goes to the stopped state, and, since the
detector circuit does not operate even if data is supplied, the system will remain in the stopped state.
oscillator element is attached.
Note: * When data is present, the XIN pin is pulled up internally.
XOUT
XIN
Pin
Data present*
H
L
Outputs the inverse of the XIN pin state.
Crystal oscillator input accepted
LC8904Q
No data
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