73K224L-28IH/F TERIDIAN [Teridian Semiconductor Corporation], 73K224L-28IH/F Datasheet - Page 12

• Manufacturer Part Number: 73K224L-28IH/F
• Description: Single-Chip Modem
• Manufacturer: TERIDIAN [Teridian Semiconductor Corporation]

TONE REGISTER
BIT NO.
D0
D1
D2
Page: 12 of 31
011
TR
OUTPUT
CONTR.
RXD
D7
Answer/ Guard
Overspeed
WIRE FDX
DTMF 2/4
Extended
(continued)
DTMF 0/
DTMF 1/
NAME
TRANSMIT
Tone
GUARD
TONE
D6
D6 D5 D4 D0
TRANSMIT
1
1
ANSWER
CONDITION
TONE
D5
D4 D1
D4 D2
0
0
0
0
0
0
©
2005, 2008 TERIDIAN Semiconductor Corporation
0
0
0
1
0
1
TRANSMIT
0
1
DTMF
D4
D0 interacts with bits D6, D5, and D4 as shown.
Select 1800 Hz guard tone.
D1 interacts with D4 as shown.
Asynchronous QAM or DPSK +1.0% -2.5%. (normal)
DESCRIPTION
Select 550 Hz guard tone.
Asynchronous QAM or DPSK +2.3% -2.5%. (extended
overspeed)
Selects 2 wire duplex or half duplex
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.
DTMF 3
D3
WIRE FDX
DTMF 2/4
V.22bis, V.22, V.21, Bell 212A, 103
D2
DATA SHEET
OVER- SPEED
EXTENDED
DTMF 1/
D1
Single-Chip Modem
73K224L
ANSWER/
DTMF 0/
GUARD
D0
Rev 7.1