參數(shù)資料
型號(hào)： U3900BM
英文描述： Programmable Telephone Audio Processor
中文描述： 程控電話(huà)音頻處理器
文件頁(yè)數(shù)： 12/34頁(yè)
文件大小： 762K
代理商： U3900BM
U3900BM
Rev. A2, 25-Aug-98
Target Specification
2 (34)
Pin Description
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
TSACL
MIC2
MIC1
MIC3
TXACL
RECO2
RECO1
TLDR
INLDR
TLDT
HFTX
CEAR
CMIC
AMREC
AMPB
STO
STRC
STC
RESET
OSCOUT
SAO2
GND
VB
ES
VMPS
SENSE
IND
RECIN
CLI2
IMPA
COSC
SWOUT
VMP
INT
BCL
BDA
OSCIN
14761
VRING
SAO1
VMIC
INLDT
CLI1
ADIN
VL
Figure 1. Pinning
Pin
Symbol
Function
1
SAO1
Positive output of speaker amplifier
(single ended and push-pull operation)
2
SAO2
Negative output of speaker amplifier
(push-pull only)
3
GND
Ground, reference point for DC- and
AC signals
4
VB
Unstabilized supply voltage
5
ES
Input for external supply indication
6
VMPS
Unregulated supply voltage for the micro-
controller (via series regulator to VMP)
7
SENSE
Input for sensing the available line current
8
VL
Positive supply-voltage input to the device in
speech mode
9
IND
The internal equivalent inductance of the
circuit is proportional to the value of the
capacitor at this pin. A resistor connected to
ground may be used to adjust the DC mask.
10
RECIN
Receive amplifier input
Pin
Symbol
Function
11
ADIN
Input of A/D converter
12
CLI2
CLID input 2
13
CLI1
CLID input 1
14
VRING
Input for ringer supply
15
IMPA
Input for adjusting the ringer input impedance
16
COSC
70-kHz oscillator for ringing power converter
17
SWOUT
Output for driving the external switching
transistor
18
VMP
Regulated output voltage for supplying the
microcontroller (typ. 3.3 V/ 6 mA in speech
mode)
19
INT
Interrupt line for serial bus
20
BCL
Clock input for serial bus
21
BDA
Data line for serial bus
22
OSCIN
Input for 3.58-MHz oscillator
23
OSCOU
T Clock output for the microcontroller
24
RESET
Reset output for the microcontroller
25
STC
Input for sidetone network
26
STRC
Input for sidetone network
27
STO
Output for connecting the sidetone network
28
AMPB
Input for playback signal of answering
machine
29
AMREC
Output for recording signal of answering
machine
30
CMIC
Input for cordless telephone
31
CEAR
Output for cordless telephone
32
HFTX
Output for transmit-level detector in intercom
mode
33
TLDT
Time constant of transmit-level detector
34
INLDT
Input of transmit-level detector
35
INLDR
Input of receive-level detector
36
TLDR
Time constant of receive-level detector
37
RECO1
Positive output of the receive amplifier, also
used for sidetone network
38
RECO2
Negative output of the receive amplifier
39
TXACL
Time-constant adjustment for transmit anti-
clipping
40
MIC3
Input of hands-free microphone
41
VMIC
Reference node for microphone amplifier,
supply for electret microphone
42
MIC1
Inverting input of symmetrical microphone
amplifier with high common-mode rejection
ratio
43
MIC2
Non-inverting input of symmetrical micro-
phone amplifier with high common-mode
rejection ratio
44
TSACL
Time-constant for speaker amplifier anti-
clipping
相關(guān)PDF資料
PDF描述
U3900BM-AFN Programmable Telephone Audio Processor
U3900BM-AFNG3 Programmable Telephone Audio Processor
U4479B DVB-Cable IF Converter and Full Multi-Standard Video-/Sound IF Processing
U4479B-MFLG3 DVB-Cable IF Converter and Full Multi-Standard Video-/Sound IF Processing
U4488B Quasi-Split Sound Circuit and AM Demodulator
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
U3900BM-AFN 制造商:TEMIC 制造商全稱(chēng):TEMIC Semiconductors 功能描述:Programmable Telephone Audio Processor
U3900BM-AFNG3 制造商:TEMIC 制造商全稱(chēng):TEMIC Semiconductors 功能描述:Programmable Telephone Audio Processor
U392N 制造商:APEM 功能描述:Switch Hardware
U39J1ZGE9 制造商:C&K Components 功能描述:- Bulk
U39MYW1QE 制造商:C&K Components 功能描述:U39MYW1QE - Bulk
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠(chǎng)商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*