參數(shù)資料
型號(hào): 73K224L-IH
廠商: TDK Corporation
英文描述: V.22bis/V.22/V.21/ Bell 212A/Bell 103 Single-Chip Modem
中文描述: V.22bis/V.22/V.21 /貝爾212A/Bell 103單芯片調(diào)制解調(diào)器
文件頁(yè)數(shù): 12/32頁(yè)
文件大小: 206K
代理商: 73K224L-IH
73K224L
V.22bis/V.22/V.21/Bell 212A/Bell 103
Single-Chip Modem
12
TONE REGISTER
(continued)
D7
D6
D5
D4
D3
D2
D1
D0
TR
011
RXD
OUTPUT
CONTR.
TRANSMIT
GUARD
TONE
TRANSMIT
ANSWER
TONE
TRANSMIT
DTMF
DTMF 3
DTMF 2/4
WIRE FDX
DTMF 1/
EXTENDED
OVER- SPEED
DTMF 0/
ANSWER/
GUARD
BIT NO.
NAME
CONDITION
D6 D5
DESCRIPTION
D0 interacts with bits D6, D5, and D4 as shown.
D4 D0
1
0
0
0
Select 1800 Hz guard tone.
D0
DTMF 0/
Answer/ Guard
Tone
1
0
0
1
Select 550 Hz guard tone.
D4
D1
D1 interacts with D4 as shown.
0
0
0
1
Asynchronous QAM or DPSK +1.0% -2.5%. (normal)
D1
DTMF 1/
Extended
Overspeed
Asynchronous QAM or DPSK +2.3% -2.5%. (extended
overspeed)
D4
D2
0
0
Selects 2 wire duplex or half duplex
D2
DTMF 2/4
WIRE FDX
0
1
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.
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