Silan

Semiconductors

SC2268

HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

Rev: 1.0

2000.12.31

4

4. TRANSMISSION CODE WAVEFORM

The transmission waveforms of the Start Word and the different Data Words generated when a specific input

key (I1~I8) is pressed are illustrated below (see also Transmission Code Pattern Sectioon):

CLK

start

W1

W2

W3

W4

W5

W6

W7

W8

1

0X

X

3X

X=0.625ms

5. TRANSMISSION CODE PATTERN

The transmission code pattern of SC2268 is given in the table below.

LSB

MSB

Transmission

C0

C1

C2

C3

C4

C5

C6

C7

Receiver

Start word

0

011

001

1

B0

B1

B2

B3

B4

B5

B6

B7

Data Word

W1 (I1)

0

011

101

0

0/p1

(Key pressed)

W2 (I2)

0

1

0

1

1

0

0

0

0/p2

W3 (I3)

0

110

001

0

0/p3

W4 (I4)

1

001

110

0

0/p4

W5 (I5)

1

010

011

0

0/p5

W6 (I6)

1

011

000

1

0/p6

W7 (I7)

1

100

010

1

0/p7

W8 (I8)

1

101

001

0

0/p8