msm7708-02 Oki Semiconductor, msm7708-02 Datasheet - Page 26

• Manufacturer Part Number: msm7708-02
• Description: Serial Register Interface Adpcm Codec For Telephone Recording
• Manufacturer: Oki Semiconductor

¡ Semiconductor
(5) CR4 (Tone Generator Operation Mode and Frequency Settings)
(a) When B7 = 1 (DTMF Tones)
CR4
Initial value
B5 B4 B3 B2 B1 B0
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
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 5)
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
OTHERS SEL
0
0
1
1
0
0
1
1
DTMF/
B7
0
Table 5 DTMF Signal and Other Tone Settings
0
1
0
1
0
1
0
1
SEND
TONE
(S tone, F tone, R tone, etc.) 0: Other tones 1: DTMF tones
0: Voice signal transmit 1: Tone transmit
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
B6
0
Description
TONE5
B5
0
TONE4
B5 B4 B3 B2 B1 B0
*
*
*
*
*
*
*
*
B4
0
*
*
*
*
*
*
*
*
1
1
1
1
1
1
1
1
TONE3
B3
0
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
TONE2
B2
0
0
1
0
1
0
1
0
1
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
TONE1
Description
B1
0
MSM7708-02
TONE0
26/38
B0
0