msm7718-01 Oki Semiconductor, msm7718-01 Datasheet - Page 19

• Manufacturer Part Number: msm7718-01
• Description: Echo Canceler With Adpcm Codec
• Manufacturer: Oki Semiconductor

¡ Semiconductor
AC Characteristics (VOX Function)
AC Characteristics (DTMF and Other Tones)
*5 Not including programmable gain set values
AC Characteristics (Gain Settings)
Frequence Deviation
Tone Reference
Output Level
Relative Value of
DTMF Tones
Transmit VOX Detection Time
voice signal ON/OFF Detect Time
Transmit VOX Detection Level
Accuracy (Voice Detection Level)
Transmit/Recieve Gain
Setting Accurancy
Parameter
Parameter
Parameter
(*5)
Symbol
Symbol
R
Df
Df
V
V
V
V
DTMF
D
TH
RL
RH
TL
T1
T2
G
Symbol
t
t
VXOFF
VXON
D
VX
Transmit side tone
(Gain set value:0dB)
Recieve side tone
(Gain set value:0dB)
V
For all gain set values
TH
/V
TL,
SilenceÆvoice
VoiceÆsilence
For detection level set values by
CRM6-B6,B5
V
RH
/V
RL
Other various tones
Condition
DTMF Tones
Condition
Condition
DTMF (Low group)
DTMF (High group), Others
DTMF (Low group)
DTMF (High group), Others
VOXO pin:see Fig.6
Voice/silence
differential:10 dB
(V
(V
(V
DD
DD
DD
= 2.7 to 3.6 V, Ta = –25 to +70°C)
= 2.7 to 3.6 V, Ta = –25 to +70°C)
= 2.7 to 3.6 V, Ta = –25 to +70°C)
140/300 160/320 180/340
Min.
–2.5
—
Min. Typ. Max. Unit
–1.5
–1.5
Min. Typ. Max. Unit
–10
–10
Typ.
–8
–8
–1
1
5
0
MSM7718-01
—
—
–8
–6
–8
–6
2
0
Max.
+2.5
—
+1.5
+1.5
–6 dBm0
–4 dBm0
–6 dBm0
–4 dBm0
+1
3
19/38
Unit
ms
ms
dB
dB
%
%
dB