HT86AR72 datasheet(41/68 Pages) HOLTEK

41 / 68 page

HT86Axx/HT86ARxx

Rev. 1.10

December 12, 2012

Voice Output

Voice Control

The voice control register controls the voice ROM circuit

and the DAC circuit and selects the Voice ROM latch

counter. If the DAC circuit is not enabled, any DAH/DAL

outputs will be invalid. Writing a

²1² to the DAC bit will

enable the DAC circuit, while writing a

²0² to the DAC bit

will disable the DAC circuit. If the voice ROM circuit is

not enabled, then voice ROM data cannot be accessed.

Writing a

²1² to the VROMC bit will enable the voice

ROM circuit, while writing a

²0² to the VROMC bit will

disable the voice ROM circuit. The LATCH bit deter-

mines which voice ROM address latch counter will be

used as the voice ROM address latch counter.

Audio Output and Volume Control

- DAL, DAH, VOL

The audio output is 12-bits wide whose highest 8-bits

are written into the DAH register and whose lowest four

bits are written into the highest four bits of the DAL regis-

ter. Bits 0~3 of the DAL register are always read as zero.

There are 8 levels of volume which are setup using the

VOL register. Only the highest 3-bits of this register are

used for volume control, the other bits are not used and

read as zero.

8 - b i t C o u n t e r

(

¸ 2 5 6 )

7 - b i t P r e s c a l e r

8 - t o - 1 M U X

W D T T i m e - o u t

W S 0 ~ W S 2

W D T C l o c k S o u r c e

C l e a r W D T T y p e

C o n f i g u r a t i o n O p t i o n

C L R W D T 1 F l a g

C L R W D T 2 F l a g

1 o r 2 I n s t r u c t i o n s

C L R

f S Y S / 4

W D T O s c i l l a t o r

W D T C l o c k S o u r c e

C o n f i g u r a t i o n O p t i o n

Watchdog Timer

V O I C E C R e g i s t e r

b 7

b 0

L A T C H C

V R O M C D A C

P 0 A E N

P 0 A E M

F A S T

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

D A C E n a b l e

1 : e n a b l e

0 : d i s a b l e

V o i c e c R O M E n a b l e

1 : e n a b l e

0 : d i s a b l e

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

V o i c e R O M C o u n t e r S e l e c t

1 : A d d r e s s L a t c h 1

0 : A d d r e s s L a t c h 0

P o w e r A m p l i f i e r E n a b l e

1 : e n a b l e

0 : d i s a b l e

P o w e r A m p l i f i e r M u t e E n a b l e

1 : e n a b l e

0 : d i s a b l e

S p e e d - U p 3 2 k H z C r y s t a l E n a b l e

1 : e n a b l e

0 : d i s a b l e

VOICE Control Register

D A L R e g i s t e r

b 7

b 0

N o t u s e d , r e a d a s " 0 "

D 3

D 2

D 1

D 0

A u d i o o u t p u t

D i g i t a l t o A n a l o g D a t a L o w R e g i s t e r

D A H R e g i s t e r

b 7

b 0

D 1 1 D 1 0 D 9

D 8

A u d i o o u t p u t

D i g i t a l t o A n a l o g D a t a H i g h R e g i s t e r

V O L R e g i s t e r

b 7

b 0

N o t u s e d , r e a d a s " 0 "

D A v o l u m e c o n t r o l d a t a

V o l u m e C o n t r o l R e g i s t e r

D 7

D 6

D 5

D 4

V O L 2 V O L 1 V O L 0

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