PSB2163T-V31TR Infineon Technologies, PSB2163T-V31TR Datasheet - Page 157

• 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

Semiconductor Group
3.3
It is important to notice, that as soon as the GCR.SP bit is switched on, the gain stages
LGAX and LGAR (located inside the automatic gain control stages) are activated
automatically. Figure 13 shows the gain stages responsible for amplification in transmit
or receive direction. The GHX and GHR stages for the switchable attenuation are not
shown.
Figure 13
Gain Stages in Speakerphone Mode
For measuring the over-all amplification in speakerphone mode it is necessary to
program the switchable attenuation ATT to 0dB (this is done by sending COP_A xx xx 00
xx xx xx xx xx, where "xx" are don’t care bytes).
Note: Throughout the ARCOFI-SP user’s manual absolute levels are given either in
dBm0 or in dBm. Levels given in dBm always refer to a 600
0dBm is equivalent to 774.6 mVrms. The signal level in the digital domain is
usually expressed in dBm0. The maximum PCM signal level defined for A-law
coding is 3.14 dBm0 respectively 3.17 dBm0 for -law. The signal level in dBm
that is delivered from the D/A converter inside the ARCOFI-SP, if a 0 dBm0 PCM
signal is applied, is determined by the reference voltage of the converter (1.18 V)
causing a level difference of 20 log (1.18/0.775) [dBr] = 3.67dBr.
Level (analog)
0.0 dBm
3.67dBm
Programming Amplifications in Speakerphone Mode
Level (digital)
0.0 dBm0
3.67 dBm0
156
Speakerphone Implementation
load, therefore