STFPC320 datasheet(59/78 Pages) STMICROELECTRONICS

59 / 78 page

STFPC320

Remote control protocols

59/78

Note:

Where T = 0.436 ms

Note that the above waveform is on the transmitted side. The received data by the

STFPC320 after the photo-diode is inverted from above.

15.6.1

Matsushita in decoded format

In the decoded form, the ADR bits followed by Start bit and Toggle Bit followed by Data bits

are sent in this order for each remote control protocol. The number of bits depends on the

corresponding RC protocol. The remaining empty bits are stuffed with 1’s to complete a

byte-aligned data frame.

For Matsushita protocol, if the 5-bit custom code is “11000” and 6-bit data code is “101010”,

the in decoded format the data on SDA pin will be sent as follows with MSB transmitted first.

Figure 38.

Matsushita data structure in decoded format

Table 14.

Matsushita remote control format

Data item

Time (sec)

Time (no. of period)

Syn pulse on time

3.49ms

Syn pulse off time

3.49ms

Data on time (0)

0.86ms

Data off time (0)

0.88ms

Data on time (1)

0.86ms

Data off time (1)

2.63ms

Data period (0)

1.74ms

Data period (1)

3.49ms

Frame output cycle

104.7ms

240T

MSB

LSB

Byte 1

Byte 2

Byte 3

ADR

MSB

DATA

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