73K224L-28IH/F 查看數據表（PDF） - Teridian Semiconductor Corporation

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73K224L-28IH/F

V.22bis, V.22, V.21, Bell 212A, 103 Single-Chip Modem

Teridian Semiconductor Corporation 

73K224L

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

Single-Chip Modem

DATA SHEET

TONE REGISTER (continued)

D7

TR

RXD

011 OUTPUT

CONTR.

BIT NO.

D6

TRANSMIT

GUARD

TONE

NAME

D0

DTMF 0/

Answer/ Guard

Tone

D1

DTMF 1/

Extended

Overspeed

D2

DTMF 2/4

WIRE FDX

D5

D4

D3

D2

D1

D0

TRANSMIT TRANSMIT

ANSWER

DTMF

TONE

DTMF 3

DTMF 2/4

WIRE FDX

DTMF 1/

EXTENDED

OVER- SPEED

DTMF 0/

ANSWER/

GUARD

CONDITION DESCRIPTION

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

1 0 0 0 Select 1800 Hz guard tone.

1 0 0 1 Select 550 Hz guard tone.

D4 D1

D1 interacts with D4 as shown.

00

Asynchronous QAM or DPSK +1.0% -2.5%. (normal)

01

Asynchronous QAM or DPSK +2.3% -2.5%. (extended

overspeed)

D4 D2

00

Selects 2 wire duplex or half duplex

01

D2 selects 4 wire full duplex in the modulation mode

selected. The receive path corresponds to the ANS/ORIG

bit CR0 D0 in terms of high or low band selection. The

transmitter is in the same band as the receiver, but does

not have magnitude filtering or equalization on its signal as

in the receive path.

Page: 12 of 31

© 2005, 2008 TERIDIAN Semiconductor Corporation

Rev 7.1

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