三合微科股�½有限公司
S
AM
H
OP
Microelectronics Corp.
SM5028RF
2
12
RF ENCODER
FUNCTION DESCRIPTION
An information word consists of 4 periods as illustrated below.
1/3 bit sync. period
pilot period (12 bits)
address code period
data code
period
Composition of information
Address/Data waveform
OSC
BIT "1"
BIT "0"
Address
/Data Bit
TE
< 1 word
Encoder
Dout
4 words
Transmitted
Continuously
4 words
SM5028RF begin a 4-word transmission cycle upon receipt of a transmission enable
(TE active low). This cycle will repeat itself as long as the transmission enable (TE is
held low). Once the transmission enable returns high the encoder output completes
its final cycle and then stops as shown below.
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SAMHOP [ SAMHOP MICROELECTRONICS CORP. ]
