MSM7716PMB View Datasheet(PDF) - Oki Electric Industry
Part Name
Description
MFG CO.
'MSM7716PMB' PDF : 23 Pages View PDF
OKI Semiconductor
FEDL7716P-01
MSM7716P
FUNCTIONAL DESCRIPTION
Control Data Description
SW1, SW2······Control bits for the transmit speech path switch.
The AD converter input is selected according to the bit data shown in Table 2.
Table 2
State SW
2
T1 0
T2 0
T3 1
T4 1
SW AD Converter Input
1
MAO
Output
0 No signal (muting state)
SG
1
Input signal to MAIN Effective
0
Input signal to PBIN
SG
1 Addition signal of both Effective
MAIN and PBIN
PBO
Output
SG
SG
Effective
Effective
Remarks
—
At initial setting
—
The gain of each input drops by 6dB
SW3, SW4······Control bits for the receive speech path switch.
The control should be performed according to Table 3.
Table 3
State SW4 SW3
R1
0
0
R2
0
1
R3
1
0
R4
1
1
DA: DA converter output.
AOUT+, AOUT– Output
SG
PWI
SG
PWI
SG: signal ground voltage.
AUXO Output
SG
SG
DA
DA
Remarks
—
At initial setting
—
—
VOL1, VOL2, VOL3········Control bits for the receive signal output level.
By controlling these bits, the output levels of VFO and AUXO can be controlled
according to Table 4.
Table 4
VOL1
0
0
0
0
1
1
1
1
VOL2
0
0
1
1
0
0
1
1
VOL3
0
1
0
1
0
1
0
1
Receive Signal Gain
0 dB
–4 dB
–8 dB
–12 dB
–16 dB
–20 dB
–24 dB
–28 dB
Remarks
At initial setting
—
—
—
—
—
—
—
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