msm7715 Oki Semiconductor, msm7715 Datasheet - Page 5

• Manufacturer Part Number: msm7715
• Description: Multi-function Telecommunication Lsi
• Manufacturer: Oki Semiconductor

¡ Semiconductor
Note:
V
AIN
SGO
SGC
GAT1
GAT2
MOD
DTO
VR1
VR2
GND
DTG1
DTG2
DTG3
Name
DD
Digital inputs that are pulled up internally by a high resistance.
Pin No.
29
31
32
34
35
36
37
38
39
40
41
42
43
44
I/O
—
—
—
I*
O
O
O
O
O
I
I
I
Power supply. Supply +2.5V to 3.6V.
Input for the analog receiving signal.
Output for the signal ground voltage. The output voltage is 1/2 V
Connect a capacitor of 0.1 mF or more between SGO and GND.
Pin for connecting the capacitor of the signal ground voltage generating circuit.
Connect a capacitor of 1 mF or more between SGC and GND.
Input for the sending output level-adjusting amplifier.
Output for the sending output level-adjusting amplifier.
Output for the sending modem signal.
Output for the DTMF signal.
Output for the reference voltage generating circuit.
The potential difference between VR1 and SGO is approximately +0.75 V.
Input for external adjustment of the modem’s carrier detection level.
Ground.
Inputs for specifying the DTMF code to be sent.
Data is latched at the falling edge of TEN.
Description
DD
.
MSM7715
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