PSB2163T-V31TR Infineon Technologies, PSB2163T-V31TR Datasheet - Page 177

• Manufacturer Part Number: PSB2163T-V31TR
• Description: IC AUDIO RINGING CODEC 28-PDSO
• Manufacturer: Infineon Technologies
• Series: ARCOFI®r

Specifications of PSB2163T-V31TR

• Function: CODEC Filter
• Interface: IOM-2, PCI, Serial
• Number Of Circuits: 1
• Voltage - Supply: 5V
• Current - Supply: 900µA
• Power (watts): 1mW
• Operating Temperature: -25°C ~ 80°C
• Mounting Type: Surface Mount
• Package / Case: DSO-28
• Includes: Activation and Deactivation, B-Channel and D-Channel HDLC Controllers, D-Channel Priority Handler, Monitor Channel Handler
• Lead Free Status / RoHS Status: Request inventory verification / Request inventory verification
• Other names: PSB2163T-V31INTR; PSB2163T-V31TR

The difference between the earpiece output and the loudspeaker output is the driver
capability. The load between the pins LSP and LSN may be as low as 50
drive a speaker. A dynamic speaker can be connected directly to these pins (see
figure 4a). An arrangement for an unsymmetrical connection with two speakers shows
figure 4b. The load can be 25
the speakers. With the register bits XCR.DLSP and XCR.DLSN each output pin can be
switched into a high impedance state therefore the speakers can be switched on and off
independently. The same applies for the earpiece output with HOP and HON. This
feature offers a variety of applications. For example, if one speaker in figure 4b is left
out, the output pin becomes a switchable line level output. For example, this output could
control an external speaker box.
3.2
The ARCOFI-SP offers five pins as microphone inputs. The two differential inputs
MIN1/MIP1 and MIN2/MIP2 are equivalent in terms of performance and circuitry. The
single ended input MI3 offers a slightly reduced performance due to its unsymmetrical
structure. All inputs can be used to interface directly with all kinds of microphones or
serve as a high level input.
Figure 5
Interfacing Symmetrical Microphones
A symmetric signal source that has no reference to ground can simply be connected to
one of the differential inputs. Basically, no additional components are required
(figure 5a). The microphone can be a dynamic, magnetic, or piezoelectric one. Usually
an arrangement similar to the one shown in figure 5b will be used in order to get well
defined impedances and a certain EMC protection. The component values depend on
the type of microphone used.
The microphone inputs are biased internally with
They can be completely AC coupled. The input impedance is higher than 15 k .
Semiconductor Group
Differential Microphone Inputs
but should be decoupled to avoid DC currents through
Layout and Wiring Recommendations
176
V
REF
and require no external biasing.
in order to