Baseband Processor For Mixed Mode Land Mobile Radio
CMX880
Selcall Tone:
The Selcall tone to be generated is defined by the ‘TX SELCALL TONE’ register ($CB). The tone level is set by
the ‘Tone Level’ field of the ‘DTMF TX AND TONE LEVEL’ register ($CD). The Selcall tone must be transmitted
on its own, so the user/host mC must disable the voice path prior to initiating transmission of a Selcall tone, and
restore the voice path after the Selcall tone transmission is complete. Table 11 shows valid Selcall tones for
commonly used Selcall tone sets, together with the values for programming the ‘TX SELCALL TONE’ register.
This does not preclude other tones being programmed.
Table 11 Selcall Tone Sets and Corresponding Tx Programming Codes
EIA
Tone Code
EEA
Tone Code
CCIR
Tone Code
Tone
Address
Freq.
(Hz)
600
741
882
1023
1164
1305
1446
1587
1728
1869
2151
2435
2010
2295
459
Freq.
(Hz)
Freq.
(Hz)
(hex)
C666
C7E7
C968
CAE9
CC6A
CDEB
CF6C
D0ED
D26E
D3EF
D6F1
D9F9
D570
D87A
C4E5
-
(hex)
D521
CBFD
CCC4
CD99
CE7C
CF6C
D06D
D17E
D2A2
D3D6
CB40
C9EB
D7F7
CA92
D681
D999
(hex)
D521
CBFD
CCC4
CD99
CE7C
CF6C
D06D
D17E
D2A2
D3D6
D999
C9EB
D7F7
CA92
D681
CB40
0
1
2
3
4
5
6
7
8
1981
1124
1197
1275
1358
1446
1540
1640
1747
1860
1055
930
1981
1124
1197
1275
1358
1446
1540
1640
1747
1860
2400
930
9
A (10)
B (11)
C (12)
D (13)
E (14)
F (15)
2247
991
2110
2400
2247
991
2110
1055
NoTone
ZVEI 1
ZVEI 2
Tone
Address
Freq.
(Hz)
2400
1060
1160
1270
1400
1530
1670
1830
2000
2200
2800
810
Tone Code
(hex)
D999
Freq.
(Hz)
2400
1060
1160
1270
1400
1530
1670
1830
2000
2200
885
Tone Code
(hex)
D999
0
1
2
3
4
5
6
7
8
CB4E
CC5F
CD8B
CEEE
D051
D1D0
D385
D555
CB4E
CC5F
CD8B
CEEE
D051
D1D0
D385
D555
9
D777
D777
C970
A (10)
B (11)
C (12)
D (13)
E (14)
F (15)
DDDD
C8A3
CA58
C970
DBBB
C740
810
740
680
970
C8A3
C7E4
C740
CA58
DBBB
970
885
2600
680
2600
ã 2001 Consumer Microcircuits Limited
31
D/880/1
CMLMICRO [ CML MICROCIRCUITS ]
