Data Sheet

PT8A9701P/974P/974LP

8-Function Remote Controller

PT0090(09/02)

Ver:2

5

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Functional Description

In normal operation without ‘Turbo’, forward (backward) out-

put pin of the decoder PT8A974P/974LP sends out a 60Hz

signal. In operation with ‘Forward (Backward)’ and ‘Turbo’

combined, the output signal will be completely high. This func-

tion is depicted in Table 3.

Timing Diagram

Data Format

See Figure 4.

Figure 4. Data Format

"1"

"0"

Frequency: 500Hz, Duty Cycle: 3/4

Frequency: 500Hz, Duty Cycle: 1/4

Coding Method

Each trigger pin is triggered by corresponding bit of data in

format of “1”. The data string is 16-bit and divided to four

segments, i.e., Start Code, Data Code, Parity Code and End

code, where

Start Code = 11110.

Data Code = F

B

T R L F1 F3 F4 F2

F = Forward

B = Backward

T = Turbo

R = Right

L = Left

F1= Function 1

F2 = Function 2

F3 = Function 3

F4 = Function4

Parity Code = Even parity check result

End Code is for data latch.

Data code can be any combination of F, B, T, R, L, F1, F2, F3

and F4 except F&B and R&L.

P

0

7

9

A

8

T

P

o

t

t

u

p

n

IP

0

7

9

A

8

T

P

o

t

t

u

p

n

I

P

0

7

9

A

8

T

P

o

t

t

u

p

n

I

P

0

7

9

A

8

T

P

o

t

t

u

p

n

IP

0

7

9

A

8

T

P

o

t

t

u

p

n

I

P

L

4

7

9

/

P

4

7

9

A

8

T

P

m

o

r

f

t

u

p

t

u

OP

L

4

7

9

/

P

4

7

9

A

8

T

P

m

o

r

f

t

u

p

t

u

O

P

L

4

7

9

/

P

4

7

9

A

8

T

P

m

o

r

f

t

u

p

t

u

O

P

L

4

7

9

/

P

4

7

9

A

8

T

P

m

o

r

f

t

u

p

t

u

OP

L

4

7

9

/

P

4

7

9

A

8

T

P

m

o

r

f

t

u

p

t

u

O

d

r

a

w

r

o

Fd

r

a

w

k

c

a

Bo

b

r

u

T

d

r

a

w

r

o

Fz

H

0

6w

o

Lw

o

L

d

r

a

w

k

c

a

Bw

o

Lz

H

0

6w

o

L

o

b

r

u

T

+

d

r

a

w

r

o

Fh

g

i

Hw

o

Lh

g

i

H

o

b

r

u

T

+

d

r

a

w

k

c

a

Bw

o

Lh

g

i

Hh

g

i

H

Table 3