HT37B90 datasheet(46/80 Pages) HOLTEK

46 / 80 page

HT37B90/HT37B70/HT37B50/HT37B30

Rev.1.00

June22,2017

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 O S C / 8

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

WatchdogTimer

D A C C R e g i s t e r

b 0

S E L A C H 0

b 7

B P _ R S E L A C H 1

S E L W R

D A C

S E L W L

A M P _ E N

A M P _ M

T o s e l e c t D A R d a t a f r o m M C U o r w a v e t a b l e

0 : f r o m M C U ( d e f a u l t )

1 : f r o m w a v e t a b l e

E n a b l e / d i s a b l e D A C f u n c t i o n

0 : d i s a b l e

1 : e n a b l e

T o s e l e c t D A L d a t a f r o m M C U o r w a v e t a b l e

0 : f r o m M C U ( d e f a u l t )

1 : f r o m w a v e t a b l e

E n a b l e / d i s a b l e b u i l d - i n p o w e r A m p . f u n c t i o n

0 : d i s a b l e

1 : e n a b l e

M u t e f u n c t i o n i n t h e b u i l d - i n p o w e r A m p .

0 : n o n - m u t e

1 : m u t e

S e l e c t c h 0 s o u r c e f r o m w a v e t a b l e / A D P C M d e c o d e r

0 : f r o m w a v e t a b l e

1 : f r o m A D P C M d e c o d e r

S e l e c t c h 0 1 s o u r c e f r o m w a v e t a b l e / A D P C M d e c o d e r

0 : f r o m w a v e t a b l e

1 : f r o m a d p c m d e c o d e r

* I n d i r e c t m e m o r y a c c e s s s f r o m M P 1 / M P 2

0 : M P 1

1 : M P 2

DACC (1FH)Register

Note:

*SwitchMP1andMP2memorypointerbyBP_R

DigitaltoAnalogConverter(DACC)

The two D/A converters of HT37B90/70/50/30 are 16-bit high-resolution with excellent frequency response characteris-

ticsandgoodpowerconsumptionforstereoaudiooutput.

1Dh

DAC HighByte

B15

B14

B13

B12

B11

B10

1Eh

DAC LowByte

1Fh

DAC Control(DACC)

BP_R

SELACH1 SELACH0 AMP_M AMP_EN SELWL

DAC

SELWR

Note:B15~B0isD/A conversionresultdatabitMSB~LSB.

HT37B90 Datasheet(PDF) 46 Page - Holtek Semiconductor Inc

HT37B90 Datasheet(HTML) 46 Page - Holtek Semiconductor Inc

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