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Remote Control Decoder
PT2272
PIN DESCRIPTION
Pin No.
18pins 20pins
Pin Name
I/O
Description
Code Address Pin Nos. 0 ~ 5.
These six tri-state pins are detected by PT2272 to
determine the encoded waveform bit 0 ~ bit 5.
Each pin can be set to “0”, “1”, or “f” (floating).
Code Address Pin Nos. 6 ~ 11/Data Pin Nos. 5 ~ 0.
These six pins are used as higher address input
bits or data output pins depending on the version
(type) of PT2272 used.
A0 ~ A5
I
1 ~ 6
1 ~ 6
When used as address inputs, these pins are
tri-state input pins and each pin can be set to “0”,
I/O “1”, or “f” (floating).
7 ~ 8
10 ~ 13 12 ~ 15
7 ~ 8
A6/D5 ~ A11/D0
When used as output pins, these pins are driven to
VCC if (1) the address decoded from the waveform
that was received matches the address setting at
the address input pins, and (2) the corresponding
data bits received is a “1” bit. Otherwise, they are
driven to VSS.
Data Input Pin.
DIN
I
The encoded waveform received is serially fed to
PT2272 at this pin.
14
16
A resistor connected
OSC 1
OSC 2
VT
I
Oscillator Pin No.1 between these two pins
determine the
15
16
17
17
18
19
fundamental frequency of
PT2272.
O
O
Oscillator Pin No. 2
Valid Transmission.
Active High Signal. VT in high state signifies that
PT2272 receives valid transmission waveform.
Positive Power Supply
Negative Power Supply
No Connection
VCC
VSS
NC
-
-
-
18
9
-
20
9
10 ~ 11
PT2272 V3.7
- 5 -
June, 2008
PTC [ PRINCETON TECHNOLOGY CORP ]
