MT9092 Datasheet, PDF (31/42 Pages) Mitel Networks Corporation – ISO2-CMOS ST-BUS™ FAMILY Digital Telephone with HDLC (HPhone-II)

MT9092
+ VBias
330Ω
+5V
+
–
R
T
1µF
1K
10µF
+
Electret
Microphone
0.1µF
0.1µF
VBias
+5V
6 5 4 3 2 1 44 43 42 41 40
ST-BUS
Port
to
Transmission
Device
DSTi ⁷
DSTo ⁸
C4i ⁹
F0i ¹⁰
11
Serial
Microport
INTEL
MCS-51
IRQ ¹²
SCLK ¹³
DATA2 ¹⁴
DATA1 ¹⁵
CS ¹⁶
WD ¹⁷
MT9092
18 19 20 21 22 23 24 25 26 27 28
+
–
R
VBias
T
330Ω
+5V
1µF
1K
+
10µF
+
Electret
Microphone
39
38
75Ω
37
+
40Ω nom.
32Ω min.
36
35
+5V ^75Ω
34
.1µF _1000pF
33
150Ω
1000pF
32
LCD
31
1000pF caps
are optional
30
29
Note: Single-ended configurations reduce
dynamic range by a factor of two.
LCD
Figure 9 - Application Circuit - single-ended audio input
7-33