msm7584c Oki Semiconductor, msm7584c Datasheet - Page 39

• Manufacturer Part Number: msm7584c
• Description: Pi /4 Shift Qpsk Modem/adpcm Codec
• Manufacturer: Oki Semiconductor

¡ Semiconductor
(5) CR4 (Tone Generator Operation Mode and Frequency Settings)
(a) When B7 = 1 (DTMF Tones)
CR4
Initial Value
B5
*
*
*
*
*
*
*
*
B4
*
*
*
*
*
*
*
*
B7: ........................... Selection of DTMF signal and other tones
B6: ........................... Transmission side tone transmit
B5, B4, B3, B2, B1, B0: Tone frequency setting (refer to Table 7)
B3
0
0
0
0
0
0
0
0
OTHERS SEL
B2
0
0
0
0
1
1
1
1
DTMF/
B7
0
B1
0
0
1
1
0
0
1
1
Table 7 Tone Generator Frequency Settings
B0
0
1
0
1
0
1
0
1
SEND
TONE
(S tone, F tone, R tone, etc.) 0: Other tones 1: DTMF signal
0: Voice signal transmit 1: Tone transmit
B6
0
697 Hz + 1209 Hz
697 Hz + 1336 Hz
697 Hz + 1477 Hz
697 Hz + 1633 Hz
770 Hz + 1209 Hz
770 Hz + 1336 Hz
770 Hz + 1477 Hz
770 Hz + 1633 Hz
Description
TONE5
B5
0
TONE4
B5
B4
*
*
*
*
*
*
*
*
0
B4
*
*
*
*
*
*
*
*
TONE3
B3
B3
0
0
0
0
0
0
0
0
0
B2
0
0
0
0
1
1
1
1
TONE2
B2
0
B1
0
0
1
1
0
0
1
1
B0
0
1
0
1
0
1
0
1
TONE1
B1
0
852 Hz + 1209 Hz
852 Hz + 1336 Hz
852 Hz + 1477 Hz
852 Hz + 1633 Hz
941 Hz + 1209 Hz
941 Hz + 1336 Hz
941 Hz + 1477 Hz
941 Hz + 1633 Hz
Description
MSM7584C
TONE0
B0
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0