PSB 2134 H V2.2 Infineon Technologies, PSB 2134 H V2.2 Datasheet - Page 75

• Manufacturer Part Number: PSB 2134 H V2.2
• Description: IC CODEC FILTER 4CHAN MQFP-64
• Manufacturer: Infineon Technologies
• Series: SICOFI®r

Specifications of PSB 2134 H V2.2

• Function: CODEC Filter
• Interface: IOM-2 PCM, SPI
• Number Of Circuits: 4
• Voltage - Supply: 5V
• Current - Supply: 26mA
• Power (watts): 130mW
• Mounting Type: Surface Mount
• Package / Case: 64-QFP
• Includes: Level Metering Function, Tone Generation
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Operating Temperature: -
• Other names: PSB2134HV2.2X; SP000007389; SP000007390

There is a single 8-bit offset register available for all 4 channels. This offset register can
be accessed as XR7 with a XOP command. With the QSICOS utility program ’Calculate
Level Metering Function’ the programming byte for the register XR7 can be calculated.
Another way is to use the table of appendix A.
By using the Level Metering Function in channel 2 (or 4) the channel 1 (or 3) has to be
in operating mode.
8.3
To find the value of an unknown level as fast as possible, the offset register should be
programmed with the byte in the middle of the measuring range. The reading of the
configuration register 2 bit LMR shows if the measured level is higher or lower than the
programmed level.
If the measured level is higher than the reference, the offset register should be
programmed with the byte in the middle between the highest valid byte and the previous
used byte. Otherwise the byte in the middle between the lowest valid byte and the
previous used byte should be programmed in the offset register.
Figure 2 shows the last three steps of such a procedure.
Figure 31
Procedure to find an unknown level with the Level Metering Function
By repeating the interpolation again and again two consecutive bytes will be found where
bit LMR is high for the lower and low for the higher byte. The value of the unknown level
is between the levels assigned to these two consecutive bytes.
Appendix B shows the programming file LMch1a.SUC with this procedure.
Semiconductor Group
Step n+2:
Step n:
Step n+1:
The measured Level is between -9.95 dBm0 (byte 12) and -10.45 dBm0 (byte 11).
Measuring a Level via the Level Metering Function
Byte Range to Check
13
12
11
10
0F
0E
0D
0C
0B
13
12
11
10
11
10
Programmed
Offset Byte
0F
12
11
75
Application Note: Level Metering
Level Metering Result
Bit LMR
1
0
1
(Meaning)
higher
lower
higher
PSB 2132
PSB 2134
09.97