S5G9801X01-D0B0 データシートの表示（PDF） - Samsung

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S5G9801X01-D0B0

INFRAED REMOCON RECEIVER

Samsung 

INFRAED REMOCON RECEIVER

S5G9801X01/S5G9803X01

3. RECEIVING SIGNAL INPUT CIRCUIT

Signal received by the light receiving element is sent through the Pre-Amp to the detector, when a 38 kHz carrier

wave is eliminated and the signal enters a REMIN PIN of the receiving signal input circuit. The receiving signal

input circuit (REMIN) has a built-in Schmitt trigger for shaping receiving signal waveforms to eliminate rounding.

PH302B

AMP

DET

REMIN

Figure 5.

4. RECEIVING SIGNAL CHECK

The receiving signal check is to check the 2-cycle transmitting signal sent from the transmitter to check whether it is

a normal signal or not.

12 Bits

12 Bits

First Data

Second Data

Figure 6.

The first data is stored in the 12-bit data register. Then, when the second data is entered, the previous data is

pushed out from the data register one by one.

The pushed out data and incoming data are checked to see if they are same.

If any errors are caused during the 12-bit receiving data check, the system is reset at that time. And when all receiv-

ing data are same, output is raised from L level to H level.

The status of receiving data, register clock and check pulse are shown below.

Register clock is provided in the data center by taking frequency margins of the transmitter and the receiver into

consideration.

7

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