TCM8002_08 Datasheet, PDF (22/25 Pages) Texas Instruments – DATA PROCESSOR FOR CELLULAR TELEPHONE

TCM8002
DATA PROCESSOR FOR CELLULAR TELEPHONE
SLWS008C − SEPTEMBER 1994 − REVISED JUNE 1996
PRINCIPLES OF OPERATION
addresses 18 to 1C − uncorrected received data
The uncorrected received data can be read from the five uncorrected received data words. The 12 LSBs are
the received parity bits, and the remaining 28 bits are the received data.
address 1D − received repeat count
The received repeat count gives the number of repeats of the received word that were used by the bit-wise
majority voting circuit to generate the uncorrected received data.
address 20 − TCM8010 read result
Address 20 contains the ADC result retrieved from the TCM8010 audio processor. This data is valid once the
TCM8010 interface has completed the read operation.
address 30 − SAT (supervisory audio tone)
The SAT tone provides the SAT frequency measurement in 2’s-complement format with a resolution of 1 Hz and
with respect to the frequency of 6 kHz, as shown in Table 20.
Table 20. SAT Frequency Measurements
FREQUENCY IN kHz
6.004
6.000
5.996
MEASUREMENT
CODE
00000011
11111111
11111011
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