LC8900KQ Datasheet, PDF (10/12 Pages) Sanyo Semicon Device – Digital Audio Interface Receiver

LC8900KQ
LOCK and ERROR Pins
Descriptions of LOCK and ERROR pins are as follows.
LOCK: Preamble detector. When two or more preambles are detected successively, this pin outputs high level signal.
When XMODE pin is low or STOP pin is high or no signal input, outputs low level signal.
ERROR: When two or more preambles are not detected successively, or 8 subframes’ continuous results of parity check
are not accomplished, this pin outputs high level signal to indicate system error. When XMODE pin is low or
STOP pin is high or no signal input, outputs high level signal.
1. Output pin conditions when error occurs.
Output pin
XMODE is low
DATAOUT
V
U
Keeps the indeterminate
condition of high or low.
CD, BSA Outputs low level signal.
BSB, COPY
EMPHA
DOUT
No effect by error.
STOP is low
Keeps the value just
before the STOP goes to
high.
Outputs low level signal.
Parity error
Outputs preceding data.
Outputs low level signal
after reset.
No effect by error.
No effect by error.
No input signal
Outputs the indeterminate
data. *1
Outputs the indeterminate
data. *1
No effect by error.
Note 1: When input pin goes to no input signal, errors can be caused due to the timing of turning into no input signal. Take the same operation as parity
error in this case.
2: When error occurring, the outputs pin’s change synchronizes the timing of ERROR pin’s turning into the high level. When XMODE pin is set to low
or STOP pin is to high, ERROR pin goes to high at the same time and the other output pins will change as in the table above.
2. Error signals and read out timing
After the ERROR pin goes to low, each data will be able to be accessed after the next clock pulse.
DATAOUT, V, U
Accessible as soon as ERROR pin goes to low
CD, BSA, BSB, COPY, EMPHA Accessible 6 ms or later after ERROR pin goes to low
XMODE Pin
XMODE pin resets the system. This pin must be turned into high after 4.5 V or more power is applied to start the system
normally. By setting XMODE pin to low, VCO self oscillation frequency from FS384 pin will reset the internal circuit.
Power rise diagram
Each input pin will be accessible after XMODE turns to be on to start the system.
Microcontroller interface pins will be accessible after XMODE turns to be on to start the system.
Each data output pin will be accessible after XMODE turns to be on and ERROR pin goes to low. COPY, EMPHA, CD,
BSA, and BSB cords will be accessible at least 6 ms later after ERROR pin goes to low.
No. 4128-10/12