TCM8002_08 Datasheet, PDF (20/25 Pages) Texas Instruments – DATA PROCESSOR FOR CELLULAR TELEPHONE

TCM8002
DATA PROCESSOR FOR CELLULAR TELEPHONE
SLWS008C − SEPTEMBER 1994 − REVISED JUNE 1996
PRINCIPLES OF OPERATION
Table 15. SAT Frequency Band
STATUS WORD 1
BIT 7
BIT 6
0
0
MEASURED FREQUENCY
6047 Hz < f < 5957 Hz†
0
1
5957 Hz < f < 5987 Hz
1
0
5987 Hz < f < 6017 Hz
1
1
6017 Hz < f < 6047 Hz
† _{This indicates an invalid SAT.}
Table 16. Address 01 − Status Word 2
BIT STATUS (WHEN BIT IS SET)
0 TCM8010 interface active
1 FVC message being received
2 In FOCC frame sync
Table 17. Address 02 − Event Register
BIT
OCCURRENCES SINCE PREVIOUS READ OF THIS WORD
(WHEN BIT IS SET)
0 RX data available
1 TX buffer available
2 Arbitration failure
3 TX sequence completed
4 Change of FOCC busy/idle status
5 Counter/timer reaches zero state
6 SAT result changed value
7 TCM8010 interface activity completed
8 FVC dotting detected
9 FVC frame sync achieved
10 Change of FOCC frame-sync status
11 SAT measurement update (every 0.2 seconds)
These flags indicate which event(s) have occurred since the previous read, regardless of their associated
interrupt control bits.
addresses 04, 05, and 06 − PIO1, PIO2, and PIO3 status words
These registers contain the states of the PIO1, PIO2, and PIO3 terminals.
address 10 − RX data word 0
This register contains the corrected received data bits 27 −20.
address 11 − RX data word 1
This register contains the corrected received data bits 19 −12.
address 12 − RX data word 2
This register contains the corrected received data bits 11 −4.
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