World modem II Page 44 of 60 2004, Copeland Communications, Inc. World modem II Datasheet Rev 1.1 U63 DAAC3 Bit D15 D14 D13 D12 D11 D1" />
參數(shù)資料
型號(hào)： CC-14.4K2-IS
廠商： Copeland Communications Inc
文件頁(yè)數(shù)： 39/60頁(yè)
文件大?。?/td> 0K
描述： MODEM 14.4KBAUD SERIAL 3.3V
標(biāo)準(zhǔn)包裝： 30
數(shù)據(jù)格式： V.22，V23，V.32，Bell 103，Bell 212A
波特率： 14.4k
電源電壓： 3 V ~ 3.6 V
安裝類(lèi)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 44 of 60
2004, Copeland Communications, Inc.
World modem II Datasheet Rev 1.1
U63 DAAC3
Bit
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
Name
LCS[7:0]
ACT[3:0]
Type
R/W
Rest settings = 0x0003
Bit
Name
Function
15:8
lcs[7:0]
Off-Hook Loop Current (1.1 mA/bit).
7:4
ACT[3:0]
AC Termination Select.
ACT[3:0]
AC Termination
0000
Real 600 ?
0011
220? + (820? || 120nF) and 220? + (820? || 115nF)
0100
370? + (620? || 310nF)
1111
Global complex impedance
3:0
Reserved
Read returns 0x3.
U65 DAAC4
Bit
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
Name
PWMG
PDN
PDL
Type
R/W
Reset settings = 0x00E0
Bit
Name
Function
15
Reserved
Read returns 0.
PWM Gain.
0 = No gain.
14
TOCT
1 = 6 dB gain applied to AOUT.
Powerdown.
Completely powerdown the modem chipset. Once set to 1, the modem must be reset to
power on.
0 = Normal
13
PDN
1 = Powerdown.
12:8
Reserved
Read returns 0.
7:5
Reserved
Must not change in a read-modify-write.
Powerdown Line-Side Chip. (Typically used only for debug)
0 = Normal operation.
4
PDL
1 = Places Line side into powerdown mode.
3:0
Reserved
Must not change in read-modify-write.
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