參數(shù)資料
型號(hào)： U3810BM
英文描述： Multi Standard Feature Phone Integrated Circuit
中文描述： 多標(biāo)準(zhǔn)功能手機(jī)集成電路
文件頁(yè)數(shù)： 16/31頁(yè)
文件大?。?/td> 497K
代理商： U3810BM
TELEFUNKEN Semiconductors
U3810BM
Rev. A1: 19.01.1996
16 (31)
VZ=17V
S2
U3810BM
40
1
10
11
12
13
14
15
16
17
18
19
2
20
21
22
23
24
25
26
27
28
3
30
31
32
33
34
35
36
37
38
39
4
41
42
43
44
5
6
TAD
7
8
9
29
IDC
4
470uF
2
2
4
4
6
470nF
220uF
100
47uF
5
1
4
2
VSO
47uF
VL
Il
6
60k
60k
serial bus
X
E
Z
T
R
I
V
I
C
TACL
RECO2
RECO1
RECOX
STL
RESET
CO
C
D
MF
STS
RECI
R
M
T
T
M
M
M
A
CEI
RREF
SO2
SO1
SAIX
SAI
VL
TAL
GND
VSA
VCC
VDD
Z
LVIO
455kHz
4
470nF
4.7uF
470nF
6.8 M
1k
4
4
1
62
61.9k
6
6
0.1uF
2
V
MIC
1
94 9334
2
Figure 8 Test circuit
Note 3: GSA1 measured with S2 on 11
GSA2 measured with S2 on 12 and Bit LIS = 1
Note 4: Antilarsen dynamic range:
GLS = GLSA – GLSB
GLSA measured at V
MIC
= 160 V
rms
GLSB measured at V
MIC
= 1 mV
rms
Note 5: The available output current of the speaker
amplifier can be increased by reduction of the quiescent
current of the receiver output stage (bits IE1, IE2, see
“contents of internal registers”).
DTMF dialing
The output pin MF provides the multifrequency signal to
be transmitted on line. This signal is the result of the sum
of two frequency pulse modulations and requires an
external filter to compose a dual sine wave. The
frequencies are chosen in a low group and a high group.
The circuit conforms to the T/CS 46–02 CEPT
recommendation concerning DTMF option 1 (–9/–11
dBm) and option 2 (–6/–8 dBm) transmit level 5 (example:
in fig. 6, option 2 can be fulfilled with 3.5 dB pre–emphasis
and 1.5 Vpp low frequency level pin 35).
Two different low levels (with 3 dB difference) and two
different pre–emphasis (2.5 and 3.5 dB) can be chosen
through the serial bus.
Melody – confidence tone
Melody/confidence tone frequencies are given in table 2.
In the state SIN1 = 1, SIN0 = 0, the IC delivers a single
pulse density modulated frequency at pin MF (the same
behavior as DTMF), denoted as a confidence tone. The
confidence tone is sent either to the line or on the
earpiece.In the state SIN1 = 0, SIN0 = 1, a square wave is
sent to the loudhearing input for ringing melodies.
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