HT95R64 datasheet(57/82 Pages) HOLTEK

57 / 82 page

HT95R64/HT95R65

Rev. 1.00

March 3, 2010

DTMF Data Output Table

Low Group (Hz)

High Group (Hz)

Digit

D3, D2, D1, D0

697

1209

0001

697

1336

0010

697

1477

0011

770

1209

0100

770

1336

0101

770

1477

0110

852

1209

0111

852

1336

1000

852

1477

1001

941

1336

1010

941

1209

1011

941

1477

1100

697

(Note*)

1633

1101

770

(Note*)

1633

1110

842

(Note*)

1633

1111

941

(Note*)

1633

0000

(Note*): Available only when R_INH=0

D T R X C R e g i s t e r

b 0

b 7

R _ P W D N

D T M F R e c e i v e r P o w e r D o w n E n a b l e

1 : t h e D T M F r e c e i v e r i s i n p o w e r d o w n m o d e

0 : t h e D T M F r e c e i v e r i s i n n o r m a l m o d e

I n h i b i t t h e d e t e c t i o n o f t o n e s r e p r e s e n t i n g c h a r a c t e r s A , B , C a n d D

1 : i g n o r e t o n e s r e p r e s e n t i n g c h a r a c t e r s A , B , C a n d D

0 : d e t e c t t o n e s r e p r e s e n t i n g c h a r a c t e r s A , B , C a n d D

D a t a v a l i d o u t p u t f l a g

1 : t h e r e i s a v a l i d D T M F t o n e r e c e i v e r

0 : t h e r e i s n o v a l i d D T M F t o n e r e c e i v e r

N o t i m p l e m e n t e d , r e a d a s " 0 "

R _ I N H

R _ D V

DTMF Receiver Control Register

D T R X D R e g i s t e r

b 7

b 0

D T M F r e c e i v e d d a t a o u t p u t

D a t a i s m e a n i n g f u l o n l y w h e n R _ D V = 1

N o i m p l e m e n t e d , r e a d a s " 0 "

R _ D 3 R _ D 2 R _ D 1 R _ D 0

DTMF Receiver Data Register

HT95R64 Datasheet(PDF) 57 Page - Holtek Semiconductor Inc

HT95R64 Datasheet(HTML) 57 Page - Holtek Semiconductor Inc

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