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EM78R911

8-bit micro-controller

ELAN Microelectronics 

EM78911

8-bit micro-controller

* Bit7 IDLE: sleep mode selection bit

0/1=sleep mode/IDLE mode. This bit will decide SLEP instruction which mode to go.

These two modes can be waken up by TCC clock or Watch Dog or PORT9 and run from “SLEP” next

instruction.

Wakeup signal SLEEP mode IDLE mode

GREEN mode NORMAL mode

RA(7,6)=(0,0) RA(7,6)=(1,0)

RA(7,6)=(x,0) RA(7,6)=(x,1)

+ SLEP

+ SLEP

no SLEP

no SLEP

TCC time out X

Wake-up

Interrupt

Interrupt

+ Interrupt

+ Next instruction

WDT time out RESET

Wake-up

RESET

RESET

+ Next instruction

Port9

RESET

Wake-up

X

X

/RINGTIME pin

+ Next instruction

PORT70~73

X

Wake-up

Interrupt

Interrupt

+ Interrupt

+ Next instruction

*P70 ~ P73 's wakeup function is controlled by IOCF(1,2,3) and ENI instruction.

*P70 's wakeup signal is a rising or falling signal defined by CONT REGISTER bit7.

*/RINGTIME pin , Port9 ,Port71,Port72 and Port73 's wakeup signal is a falling edge signal.

8. RB(DTMF tone row and column register) (read/write)

7

6

5

4

3

2

1

0

c7

c6

c5

c4

r3

r2

r1

r0

* Bit 0 - Bit 3 are row-frequency tone.

* Bit 4 - Bit 7 are column-frequency tone.

* Initial RB is equal to high. Bit 7 ~ 0 are all "1" , turn off DTMF power .

bit 3~0

1110

1101

1011

0111

Column freq

bit 7~4

Row freq

699.2Hz

771.6Hz

854Hz

940.1Hz

1

4

7

*

1203Hz

1110

2

5

8

0

1331.8Hz

1101

3

6

9

#

1472Hz

1011

A

B

C

D

1645.2Hz

0111

9. RC(CALLER ID address)(read/write)

7

6

5

4

3

2

CIDA7 CIDA6 CIDA5 CIDA4 CIDA3 CIDA2

* Bit 0 ~ Bit 7 select CALLER ID RAM address up to 256.

1

CIDA1

0

CIDA0

10. RD(CALLER ID RAM data)(read/write)

* Bit 0 ~ Bit 8 are CALLER ID RAM data transfer register.

User can see IOCA register how to select CID RAM banks.

9

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