TCM8002_08 Datasheet, PDF (15/25 Pages) Texas Instruments – DATA PROCESSOR FOR CELLULAR TELEPHONE

TCM8002
DATA PROCESSOR FOR CELLULAR TELEPHONE
SLWS008C − SEPTEMBER 1994 − REVISED JUNE 1996
PRINCIPLES OF OPERATION
CONTROL
WORD 4
BIT 1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
Table 6. Clock-Selection Bits
CONTROL WORD 2
BIT 7
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
BIT 6
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
BIT 5
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
SELECTED CLOCK
FREQUENCY
2.56 MHz
5.12 MHz
7.68 MHz
10.24 MHz
2.56 MHz
5.12 MHz
7.68 MHz
10.24 MHz
Not used
Not used
15.36 MHz
20.48 MHz
Not used
Not used
15.36 MHz
20.48 MHz
TCM8010
INTERFACE CLOCK
320 kHz
320 kHz
320 kHz
320 kHz
1.28 MHz
1.28 MHz
1.28 MHz
1.28 MHz
Not used
Not used
320 kHz
320 kHz
Not used
Not used
1.28 MHz
1.28 MHz
Table 7. Address 02 − Control Word 3 Functions
BIT
FUNCTION (WHEN BIT IS SET)
0 Invert polarity of RXIN
1 Invert polarity of TXOUT
2 Invert polarity of RFEN†
3 Invert polarity of INTRPT, active low
4 RAEN active low†
5 TAEN active low†
6 TMZERO active low
7 RCCBUSY active low
† _{RFEN, RAEN, and TAEN have open-drain output drivers. These}
drivers have active pulldowns and require provision of external
pullups.
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