TCM8002_08 Datasheet, PDF (19/25 Pages) Texas Instruments – DATA PROCESSOR FOR CELLULAR TELEPHONE

TCM8002
DATA PROCESSOR FOR CELLULAR TELEPHONE
SLWS008C − SEPTEMBER 1994 − REVISED JUNE 1996
PRINCIPLES OF OPERATION
read address map
Table 13 shows the read address map. This is followed by an explanation of all the bits contained in this address
map including detailed information in Table 14 through Table 19.
Table 13. Read Address Map
ADDRESS
(7 BITS) HEX
NAME
FUNCTION
00
Status Word 1
Status word 1
01
Status Word 2
Status word 2
02
Event Register
Event register
04
PIO1 Status Word
State of PIO1 terminals
05
PIO2 Status Word
State of PIO2 terminals
06
PIO3 Status Word
State of PIO3 terminals
10
RX Data Word 0
RX bits 27− 20
11
RX Data Word 1
RX bits 19 −12
12
RX Data Word 2
RX bits 11 −4
13
RX Data Word 3 (bits 7− 4) RX bits 3 −0 and error-correction status
18
Uncorrected RX Data Word 0 Uncorrected received data bits 39 −32
19
Uncorrected RX Data Word 1 Uncorrected received data bits 31 −24
1A
Uncorrected RX Data Word 2 Uncorrected received data bits 23 −16
1B
Uncorrected RX Data Word 3 Uncorrected received data bits 15 −8
1C
Uncorrected RX Data Word 4 Uncorrected received data bits 7 −0
1D
RX Repeat Count
Number of word repeats used for the majority voting
20
TCM8010 Result
8-bit result of TCM8010 A/D conversion
30
SAT (supervisory audio tone) SAT frequency measurement
NO. OF
SIGNIFICANT
BITS
8
3
12
8
8
4
8
8
8
8
8
8
8
8
8
4
8
8
Table 14. Address 00 − Status Word 1
BIT
STATUS (WHEN BIT IS SET)
0 RX data available
1 TX buffer available
2 Most recent TX aborted or arbitration failure
3 TX encoder active
4 RECC busy (not idle)
5 Counter/timer at zero state
6 SAT frequency band as detailed in Table 13
7 SAT frequency band as detailed in Table 13
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