World modem II Page 47 of 60 2004, Copeland Communications, Inc. World modem II Datasheet Rev 1.1 Bit Name Function 1 RZ Set this bit " />
參數(shù)資料
型號(hào)： CC-33K2-IS5
廠商： Copeland Communications Inc
文件頁(yè)數(shù)： 42/60頁(yè)
文件大?。?/td> 0K
描述： MODEM 33KBAUD SERIAL 5V
標(biāo)準(zhǔn)包裝： 30
數(shù)據(jù)格式： V.22，V23，V.32，V.34，Bell 103，Bell 212A
波特率： 33k
電源電壓： 4.2 V ~ 7 V
安裝類型： 表面貼裝
封裝/外殼： 模塊
包裝： 散裝
配用： 539-1002-ND - KIT EVALUATION WORLD MODEM II
Data Sheet
World modem II
Page 47 of 60
2004, Copeland Communications, Inc.
World modem II Datasheet Rev 1.1
Bit
Name
Function
1
RZ
Set this bit to 0.
Ringer Threshold Select.
Used to satisfy country requirements on ring detection. Signals below the lower level does not
generate a ring detection; signals above the upper level are guaranteed to generate a ring
detection.
0 = 11 to 22 Vrms
0
RT
1 = 17 to 33 Vrms
U68 ITC2
Bit
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
Name
BTE
ROV
BTD
Type
R/W
Reset settings = 0x0000
Bit
Name
Function
15:3
Reserved
Do not modify.
Billing Tone Protect Enable.
0 = Disabled.
1 = Enabled.
When set, the DAA responds automatically to a collapse of the line-derived power supply during a
billing tone event. When off-hook, if BTE = 1 and BTD goes high, the dc termination is released
(800? presented to the line).
2
BTE
If BTE and RIM (U70, bit 9) are set, an RI (U70, bit1) interrupt also occurs when BTD goes high.
Receive Overload.
The bit is set when the receive input has an excessive input level. This bit is cleared by writing a 0
to this location.
0 = Normal receive input level.
1
ROV
1 = Excessive receive input level.
Billing Tone Detected.
This bit is set if a billing tone is detected. This bit is cleared by writing a 0 to this location.
0 = No billing tone.
0
BTD
1 = Billing tone detected.
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