psb21381 Infineon Technologies Corporation, psb21381 Datasheet - Page 23
psb21381
Manufacturer Part Number
psb21381
Description
Siemens Codec With S/t Transceiver
Manufacturer
Infineon Technologies Corporation
Datasheet
1.PSB21381.pdf
(270 pages)
- Current page: 23 of 270
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Table 1 (cont’d)
Data Sheet
Pin No.
MQFP-44
38
39
40
44
43
42
41
35
5
6
2
4
Pin No.
MQFP-64
58
59
60
64
63
62
61
50
51
5
6
2
4
Symbol
V
BGREF
AXI
MIP1
MIN1
MIP2
MIN2
HOP
HON
LSP
LSN
reserved I
reserved I
REF
Input (I)
Output (O)
Open Drain
(OD)
O
I/O
I
I
I
I
I
O
O
O
O
13
Function
Analog Frontend
2.4V Reference voltage for biasing
external circuitry
An external capacity of 100nF has to
be connected
Reference Bandgap voltage for
internal references
An external capacity of
be connected
Single-ended Auxiliary Input
Symmetrical differential Microphone
Input 1
Symmetrical differential Microphone
Input 2
Differential Handset earpiece output
for 200
Differential Loudspeaker output for
50
power supply of 5 V or 3.3 V
respectively
Reserved Pins
This input is not used for normal
operation and must be connected to
VDD.
This input is not used for normal
operation and must be connected to
VSS.
or 25
transducers
loudspeaker using a
PSB 21381/2
PSB 21383/4
22nF has to
2001-03-12
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