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URL: http://www.princeton.com.tw
Remote Control Encoder PT2262
PT2262 v3.3 Page 4 Revised May 1998
Princeton Technology
Corp.
A Code Bit is the basic component of the encoded waveform, and can be
classified as either an AD (Address/Data) Bit or a SYNC (Synchronous)
Bit.
An AD Bit can be designated as Bit “0”, “1” or “f” if it is in low,
high or floating state respectively. One bit waveform consists of 2
pulse cycles. Each pulse cycle has 16 oscillating time periods. For
further details, please refer to the diagram below:
Osc
Bit "0"
Bit "1"
Bit "f"
Floating
αα
1 bit = 32
αα
4
αα
4
αα
12
αα
where :
αα
= Oscillating Clock Period
The Synchronous Bit Waveform is 4 bits long with 1/8 bit width
pulse. Please refer to the diagram below:
1/8 bit width = 4
αα
4 bits width = 128 αα
Note : 1 bit = 32
αα
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