TCM8002_08 Datasheet, PDF (14/25 Pages) Texas Instruments – DATA PROCESSOR FOR CELLULAR TELEPHONE

TCM8002
DATA PROCESSOR FOR CELLULAR TELEPHONE
SLWS008C − SEPTEMBER 1994 − REVISED JUNE 1996
PRINCIPLES OF OPERATION
Table 3. Address 00 − Control Word 1
BIT
FUNCTION (WHEN BIT IS SET)
0 Enable SATOUT output
1 Signalling tone (ST) select (to TXOUT)
2 Voice-channel operation (RVC) (not control channel RECC)
3 Digital color code first bit (DCC) (see Table 4)
4 Digital color code second bit (DCC) (see Table 4)
5 Enable RFEN and TOUT; disable on detection of an arbitration fail
6 Timer/counter continuously cycles
7 Disable SAT detector and regenerator (only in low-power mode)
The translation between the 2-bit DCC code and the transmitted data is shown in Table 4.
Table 4. Two-Bit DCC Code Translation
CONTROL WORD 1
BIT4
BIT3
0
0
0
1
1
0
1
1
TRANSMITTED CODE
0000000
0011111
1100011
1111100
Table 5. Address 01 − Control Word 2
BIT
FUNCTION (WHEN BIT IS SET)
0 AMPS (not TACS)
1 FOCC B word (not A word)
2 Enable automatic control of TCM8010 receive audio circuit through the TCM8010 interface
3 Enable automatic control of TCM8010 transmit audio circuit through the TCM8010 interface
4 Disable all 10-µA pullups of PIO1, PIO2, and PIO3
5 Clock selection (along with bit 1 of control word 4)
6 Clock selection (along with bit 1 of control word 4)
7 TCM8010 interface write-speed selection
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