STFPC320 datasheet(56/78 Pages) STMICROELECTRONICS

Part #	STFPC320

Description	Front panel controller/driver with standby power management and real-time clock

PDF	78 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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56 / 78 page

Remote control protocols

STFPC320

56/78

15.5

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 is 45 ms or 150 period.

A frame consists of a syn pulse, a seven-bit data code and a five-bit custom code.

Figure 34.

Output code waveform timing definitions

Note:

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.

Table 13.

Sony remote control format

Data item

Time (sec)

Time (no. of period)

Syn pulse

2.4ms

Data off time

0.61ms

Data on time (0)

0.59ms

Data on time (1)

1.19

Data on time (0)

1.2

Data on time (1)

1.8

Frame output cycle

150T

Sym pulse

D0 D1 D2 D3 D4 D5 D6 D2 D3 D4 D5 D6

Data code 7 bit

Custom code

5 bit

Sym pulse

2T 2T

Data “0”

Data “1”

STFPC320 Datasheet(PDF) 56 Page - STMicroelectronics

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