SM5033AL SAMHOP [SamHop Microelectronics Corp.], SM5033AL Datasheet - Page 3

• Manufacturer Part Number: SM5033AL
• Description: IR DEODER
• Manufacturer: SAMHOP [SamHop Microelectronics Corp.]

(2) IR/RF Receiving
(3) Receiving Signal checking
(4) Custom Code
RECEIVING SIGNAL
A Schmitt circuit for shaping receiving signal waveform is built-in to eliminate rounding.
The receiving signal is checked by means of storing the 1st frame of transmitting signal in
a 12-bit shift register and then, when the second frame data is put into the shift register,
1st frame data in the shift register is forced out by ont bit.
This bit is compared with the incoming bit to determine whether the receiving signal is
correct or not.
C1, C2 and C3 provide custom code setting. When coding of transmitter and receiver is
the same, internal latch strobe pulse is generated to latch received data and output is
effected.
S
三合微科股份有限公司
AM
IR/RF RECEIVING
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MODULE
OP
FIRST DATA
Microelectronics Corp.
12 BITS
Figure 2
Figure 3
Page 3
RXIN
2
SM5033A/AL
SECOND DATA
12 BITS
VER 1.0,NOV. 2000
IR DEODER