IL91214 A, IL91214B

PIN DESCRIPITION

Pin #

A

B

Designation

Description

1

1

HK

Hook switch input

2

2

MODE IN

М/В = 1/2,

MODE IN = floating mode,

20 Hz, М/В = 1/2

3

3

OSCI

Oscillator input

4

4

OSCO

Oscillator output

5

5

Ground

6

6

Supply output

7

7

TONE

Tone dialing output

8

8

XMIT

MUTE

Dialing transmission mute output

9

MODE OUT Mode output pin

10

KT

Key-in tone output

9

11

DP

Dialing pulse output

10

12

C1

Keyboard column input

11

13

C2

Keyboard column input

12

14

C3

Keyboard column input

13

15

R1

Keyboard row input

14

16

R2

Keyboard row input

15

17

R3

Keyboard row input

16

18

R4

Keyboard row input

Keyboard Assignment

R4

HK

MO D E IN

OS C I

OS C O

XM IT M U T E

R3

R2

R1

C3

C2

C1

DP

01

02

03

04

05

06

11

12

13

07

08

Vs s

Vd d

TO N E

09

10

14

15

16

R4

HK

MODE IN

OSCI

OSCO

XMIT MUTE

R3

R2

R1

C3

C2

C1

DP

01

02

03

04

05

06

12

13

14

07

08

Vss

Vdd

TONE

09

10

11

15

16

17

18

MODE OUT

KT

1. */T – At Pulse mode this key works as Pulse -> DTMF key (T key), at DTMF mode the key works as *key. */T key

R4

R3

R2

RD

#

0

*/T

P

9

8

7

F2

6

5

4

F1

3

2

1

C1

C2

C3

C4

R1

will occupy one memory digit in either use.

2. F1 – Flash key. The break time is 297ms

3. F2 – Flash key for break time 640ms

4. P – Pause key (2.2 seconds)

5. RD – One key redial key

6. # - At pulse mode this key input is neglected, at DTMF mode this key works as # key.