參數(shù)資料
型號: 73K224BL-IH
廠商: Electronic Theatre Controls, Inc.
英文描述: Single-Chip Modem w/ Integrated Hybrid
中文描述: 單芯片調(diào)制解調(diào)器瓦特/集成混合
文件頁數(shù): 15/33頁
文件大?。?/td> 237K
代理商: 73K224BL-IH
73K224BL
V.22bis/V.22/V.21/Bell 212A/103
Single-Chip Modem w/ Integrated Hybrid
15
TONE REGISTER
TR
D7
D6
D5
D4
D3
D2
D1
D0
ADDR
011
RXD
OUTPUT
CONTROL
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
NAME
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:
KEYBOARD
EQUIVALENT
1
D3, D2,
D1, D0
DTMF 3,
2, 1, 0
DTMF CODE
D3 D2 D1 D0
0
0
TONES
LOW
697
HIGH
1209
0
1
0
0
1
0
2
697
1336
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
1
0
0
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
3
4
5
6
7
8
9
0
*
#
A
B
C
D
697
770
770
770
852
852
852
941
941
941
697
770
852
941
1477
1209
1336
1477
1209
1336
1477
1336
1209
1477
1633
1633
1633
1633
D4
TX DTMF
(Transmit
DTMF)
0
1
Disable DTMF.
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.
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