STFPC320 STMicroelectronics, STFPC320 Datasheet - Page 53

• Manufacturer Part Number: STFPC320
• Description: Front Panel Controller/driver With Standby Power Management And Real-time Clock
• Manufacturer: STMicroelectronics

STFPC320
15.5
Note:
Sony remote control format
The modulated carrier is usually derived from 480kHz and is 1/12 of the frequency with 1/3
duty cycle.
When data are transmitted repeatedly, the frame cycle i s45ms or 150 period.
A frame consist of a syn pulse, a seven-bit data code and a five-bit custom code.
The timing definitions of the output code waveform are showm below.
Table 12.
Where T = 0.3ms
Note that the above waveform is on the transmitted side. The received data by the
STFPC320 after the photo-diode is inverted from above.
Syn pulse
Data off time
Data on time (0)
Data on time (1)
Data on time (0)
Data on time (1)
Frame output cycle
Data item
Data “1”
Sym pulse
Data “0”
Sony remote control format
Sym pulse
150T
2T
2T 2T
D0 D1 D2 D3 D4 D5 D6 D2 D3 D4 D5 D6
Data code 7 bit
4T
2.4ms
0.61ms
0.59ms
1.19
1.2
1.8
45
8T
150T
Time (sec)
Custom code
150T
5 bit
8T
2T
2T
4T
4T
6T
150T
Remote control protocols
Time (no. of period)
150T
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