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Fax: 886-2-29174598
URL: http://www.princeton.com.tw
Remote Control Decoder
PT2272
DECODER WITH DATA OUTPUT PINS
1. When Power is turned ON, PT2272 activates the Stand-By Mode.
2. It then searches for signals. If there is no signal received, it remains in the Stand-By Mode;
otherwise, the address bits are compared with the address configuration of the pins.
3. Whenever the Address Bits in a Frame match with that of the Address Configuration of the Pin, the
data bits are stored into the memory. Also, when this IC finds two (2) continuous and identical data
having the same address bits, the data output(s) is activated and the VT is enabled. The VT is
disabled when there are 2 continuous mismatched addresses. For the momentary type, the data
output is reset; while for the latch type, the data output is sustained.
Power ON
Stand-By Mode
Disable VT &
Reset Output Data
(For Momentary Type)
Disable VT &
Sustain Output Data
(For Latch Type)
No
Signal In?
Yes
No
No
Address
Bit Match?
Yes
Store Data Bits
Match
Previous Data?
Yes
No
Address Bits
Match?
Yes
Data Bits Output
& Activate VT
Yes
Yes
Address Bits
Still Match?
No
Address Bits
Still Match?
No
PT2272 V3.7
- 12 -
June, 2008
PTC [ PRINCETON TECHNOLOGY CORP ]
