Silan

Semiconductors

SC5262

HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

Rev: 1.0

2000.12.31

5

0

3

6

9

12

15

1

10

100

Supply Voltage (V)

Encoder OSC Frequency

0

3

6

9

12

15

1

10

1000

Supply Voltage (V)

Decoder OSC Frequency

100

R=510k

R=1M

R=3.3M

R=4.7M

R=100k

R=240k

R=510k

R=1M

R=2M

R=2M

Suggested Oscillator resistor values are shown below:

4.7M

820k

3.3M

1.2M

680k

200k

SC5262

SC5272

2. IR OPERATION

In the IR Type of operation, the functions are similar to the above descriptions except for the output waveform

that has a carrier frequency of 38kHz. Details are as follow.

Code Bits

The Code Bits are further modulated with a 38kHz carrier frequency and can be”0”,”1” or “ f ” bit. Their waveform

are shown below:

OSC

"0"

"1"

"f"

Sync

160

λ

20

λ

60

λ

Note:

λ=2 clock lengths

620

λ

Code Word

A Code Word is made up of code bits and the format is the same as that of the RF Code Word.

Code Frame

Likewise, a Code Frame is made up of Code Words and the format is the same as that of RF type of operation.