参数资料
型号: U3900BM-AFNG3
英文描述: Programmable Telephone Audio Processor
中文描述: 程控电话音频处理器
文件页数: 18/34页
文件大小: 762K
代理商: U3900BM-AFNG3
U3900BM
Target Specification
Rev. A2, 25-Aug-98
25 (34)
14593
V
B
100 k
+
V
B
100 k
V
M
100 k
+
V
B
100 k
V
M
100 k
+
V
B
100 k
V
M
ENSA ENSAO
SE
30 k
Ron = 2
SAO1
SAO2
50
47
F
CHARLSC
SE
LSCUR
[1:2]
V
M
+
V
B
V
M
ENSA
200 k
Offset
canceler
ENSA
SACL
ENSA
PROG_SAI
VB_REG
ENSA
TSACL
ENSACL
V
B
SAI
IDSAI
CFN
< = 32 dB
0 / 6 dB
EN [1:6]
EN
Figure 27. Speaker amplifier
14620
Sidetone
balancing
DTMF
generator
Offset
cancel
Filter
< –24dBm/
–22dBm >
Offset
cancel
0dB
MIC3
Handset
micro–
phone
Handsfree
micro–
phone
0dB
CMIC
Cordless
VL
Line
LRX
DTMF
MIC
AMPB
0dB
AGCO
RXLS
EPO
Offset
cancel
DTMF
7dB
6dB steps
7dB
→0dB and
20dB (NWT)
–14.5dB
–10dB
–3dB ... –10dB and 7dB (NWT)
–10dB (DTMF)
1dB steps
LTX
0dB
AMREC
AGCI
6dB
MIC1
MIC2
SAO1
SAO2
8dB
RECO1
RECO2
MOD
VL
CEAR
AGC
DTMF
< –40dBm/
–38dBm >
ST
Earpiece
Loud–
speaker
Line
1dB steps
Switching
matrix
AMPB
Answering
machine
AMREC Answering
machine
TXA
1.5dB steps
32dB
1dB steps
30dB
→12dB
26dB
→-3dB and
9dB
→2dB
Figure 28. Audio frequency signal management U3900BM
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