73K324BL-IH/F データシートの表示（PDF） - Teridian Semiconductor Corporation

部品番号

コンポーネント説明

メーカー

73K324BL-IH/F

CCITT V.22bis,V.23,V.22,V.21,Bell 212A Single-Chip Modem w/ Integrated Hybrid

Teridian Semiconductor Corporation 

73K324BL

CCITT V.22bis,V.23,V.22,V.21, Bell 212A

Single-Chip Modem w/ Integrated Hybrid

DATA SHEET

TONE REGISTER

D7

D6

D5

D4

D3

D2

D1

D0

TR

RXD TRANSMIT TRANSMIT TRANSMIT

011 OUTPUT GUARD ANSWER

DTMF

CONTROL TONE

TONE

DTMF

3

DTMF 2/

4-WIRE

FDX

DTMF 1/

EXTENDED

OVER-

SPEED

DTMF 0/

ANSWER

GUARD

BIT

NAME

CONDITION DESCRIPTION

D3 D2 D1 D0 D0 interacts with bits D6, D5, and D4 as shown

D3, D2,

D1, D0

DTMF 3,

2, 1, 0

0 0 0 0-

1111

Programs 1 of 16 DTMF tone pairs that will be

transmitted when TX DTMF and TX enable bit (CR0, bit

D1) is set. Tone encoding is shown below:

KEYBOARD

EQUIVALENT

1

DTMF CODE

D3 D2 D1 D0

0001

TONES

LOW HIGH

697 1209

2

0 0 1 0 697 1336

3

0 0 1 1 697 1477

4

0 1 0 0 770 1209

5

0 1 0 1 770 1336

6

0 1 1 0 770 1477

7

0 1 1 1 852 1209

8

1 0 0 0 852 1336

9

1 0 0 1 852 1477

0

1 0 1 0 941 1336

*

1 0 1 1 941 1209

#

1 1 0 0 941 1477

A

1 1 0 1 697 1633

B

1 1 1 0 770 1633

C

1 1 1 1 852 1633

D

0 0 0 0 941 1633

D7

RXD Output

0

Enables RXD pin. Receive data will be output on RXD.

Control

1

Disables RXD pin. The RXD pin reverts to a high

impedance with internal weak pull-up resistor.

NOTE: DTMF0-DTMF2 should be set to an appropriate state after DTMF dialing to avoid unintended operation.

Page: 16 of 34

© 2005, 2008 TERIDIAN Semiconductor Corporation

Rev 6.1

Share Link: