73K224BL-IHR/F データシートの表示（PDF） - Teridian Semiconductor Corporation

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73K224BL-IHR/F

V.22bis, V.22, V.21, Bell 212A, 103 Single-Chip Modem w/ Integrated Hybrid

Teridian Semiconductor Corporation 

73K224BL

V.22bis, V.22, V.21, Bell 212A, 103

Single-Chip Modem w/ Integrated Hybrid

DATA SHEET

TONE REGISTER

TR

D7

D6

D5

D4

D3

D2

D1

D0

ADDR

RXD

TRANSMIT

011 OUTPUT GUARD

CONTROL TONE

TRANSMIT

ANSWER

TONE

TRANSMIT

DTMF

DTMF 3

DTMF 2/

4-WIRE

FDX

DTMF 1/

EXTENDED

OVER-

SPEED

DTMF 0/

ANSWER

GUARD

BIT

D3, D2,

D1, D0

NAME

DTMF 3,

2, 1, 0

CONDITION

DESCRIPTION

D0 interacts with bits D6, D5, and D4 as shown

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:

DTMF CODE

D3 D2 D1 D0

0 0 01

KEYBOARD

EQUIVALENT

1

TONES

LOW

HIGH

697

1209

0 0 10

2

697

1336

0 0 11

3

0 1 00

4

0 1 01

5

0 1 10

6

0 1 11

7

1 0 00

8

1 0 01

9

1 0 10

0

1 0 11

*

1 1 00

#

1 1 01

A

1 1 10

B

1 1 11

C

0 0 00

D

697

1477

770

1209

770

1336

770

1477

852

1209

852

1336

852

1477

941

1336

941

1209

941

1477

697

1633

770

1633

852

1633

941

1633

D4

TX DTMF

0

Disable DTMF.

(Transmit

DTMF)

1

Activate DTMF. The selected DTMF tones are transmitted

continuously when this bit is high. TX DTMF overrides all

other transmit functions.

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

Page: 15 of 33

© 2005, 2008 TERIDIAN Semiconductor Corporation

Rev 7.1

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