lc89052t Sanyo Semiconductor Corporation, lc89052t Datasheet - Page 9

• Manufacturer Part Number: lc89052t
• Description: Digital Audio Interface Receiver
• Manufacturer: Sanyo Semiconductor Corporation

8. Function Description
8.1 System Reset (
8.2 Low-Power Modes
The system operates normally when
When power is on, resetting must be done with the
If a crystal oscillator is used, you must wait to start normal operation for at least 10ms until the oscillation gets stable
The LC89052T supports two low-power modes: the mode in which whole circuit is controlled with the
The low-power mode controlled by the
The pins that are available with the low-power settings except for the oscillation amplifier are only the XIN pin and
The pins that are available with the PDOWN[1:0] low-power mode settings except those for the oscillator amplifier
When the oscillator amplifier is stopped by the AMPOPR in a low-power mode setup with PDOWN[1:0] or when this
When the low-power mode is set with PDOWN[1:0], it is possible to write to the microcontroller registers. However,
you set the
after the
mode in which only special functions are controlled by the PDOWN[1:0].
the registers are initialized.
XOUT pin. These can be used to provide the master clock for the DSP and other circuits.
and its divider circuit are only the CKOUT, BCK, LRCK, DATAO, SDIN, XIN and XOUT pins. This mode can be
used to minimize power consumption during analog data processing.
circuit is already stopped, it is impossible for the LC89052T to provide a clock output. Thus the AMPOPR takes
precedence. Note that the PLLOPR setting is invalid and the PLL circuit is stopped.
all the sub-code Q and channel status that are read are fixed at a low level.
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PD pin goes from low to high.
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PD pin to low again after power is applied, the system is reset.
V DD
PD
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PD)
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PD pin is set to high level after a supply voltage is rises to 2.7V or higher. When
Figure 8.1
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PD applies to the entire circuit of the LC89052T. All clocks are stopped and
System reset
2.7V
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PD Pin Levels at Power On
PD pin set to low.
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LC89052T
t
2.0V
System operation
t > 200
PD pin and the
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