D6122G NEC, D6122G Datasheet - Page 11

• Manufacturer Part Number: D6122G
• Description: Search -----> UPD6122G
• Manufacturer: NEC

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4. REMOTE OUTPUT WAVEFORM (NEC TRANSMISSION FORMAT:
• When f
(1) Remote (REM) output (from stage 2 , transmission occurs only when key is kept depressed)
(2) Magnification of stage 1
(3) Magnification of waveform 3
(4) Magnification of waveform 2
(5) Carrier waveform (Magnification of HIGH period of codes)
ONE-SHOT COMMAND TRANSMISSION MODE)
REM output
Remark If a key is kept depressed, the second and subsequent times, only the leader code and the stop
REM output
REM output
REM output
REM output
OSC
= 455 kHz
bit are transmitted, which allows power savings for the infrared-emitting diode. If a command is
issued continuously in the same way the second and subsequent times as the first time, refer to
7. ONE-SHOT/CONTINUOUS COMMAND TRANSMISSION MODE.
Leader Code
9 ms
58.5 to 76.5 ms
13.5 ms
4.5 ms
108 ms
8.77 µs
9 ms
9 ms
1
Leader Code
3
11.25 ms
Custom Code
13.5 ms
8 bits
26.3 µs
18 ms to 36 ms
58.5 ms to 76.5 ms
Carrier frequency: fc = fosc/12 = 38 kHz
Custom Code’
9 ms or 0.56 ms
2.25 ms
8 bits
4.5 ms
108 ms
1.125 ms
2
0.56 ms
Stop Bit
Data Code
0.56 ms
0
8 bits
2.25 ms
1
27 ms
PD6121, 6122
Data Code
1
8 bits
0
0
Stop Bit
1 bit
11