Block diagram – Rainbow Electronics HT49R70A-1 User Manual

Page 2

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Block Diagram

HT49R70A-1

Rev. 1.00

2

December 4, 2001

P r o g r a m

C o u n t e r

P r o g r a m

E P R O M

I n s t r u c t i o n

R e g i s t e r

I n s t r u c t i o n

D e c o d e r

T i m i n g

G e n e r a t i o n

O S C 2
O S C 4

O S C 1
R E S
V D D
V S S
O S C 3

I n t e r r u p t

C i r c u i t

I N T C

M P

M

U

X

M U X

D A T A

M e m o r y

A L U

S h i f t e r

S T A T U S

A C C

P A

P O R T A

P A 0 / B Z

T M R 0 C

T M R 0

M

U

X

M

U

X

P B

P O R T B

P B 2 / T M R 0

W

D T O S C

P A 1 / B Z
P A 2
P A 3 / P F D
P A 4 ~ P A 7

P B 0 / I N T 0

P B 1 / I N T 1

P B 3 / T M R 1

R T C O S C

O S C 3

O S C 4

R T C

S T A C K

L C D

M e m o r y

B P

L C D D R I V E R

C O M 0 ~
C O M 2

C O M 3 /
S E G 4 0

S E G 0 ~
S E G 3 9

T i m e B a s e

W

D T

P C

P C 0 ~ P C 7

P B 4 ~ P B 7

H A L T

E N / D I S

L V D / L V R

T M R 1 C

T M R 1

M

U

X

P F D 0

P F D 1

P B 3 / T M R 1
T M R 0 O V

f

S Y S

T i m e B a s e O u t
f

T 1 D

f

S Y S

/ 4

f

S Y S

R T C O u t
P B 2 / T M R 0

f

S Y S

/ 4

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