MSM7716P データシートの表示（PDF） - Oki Electric Industry

部品番号

コンポーネント説明

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MSM7716P

Single Rail Linear CODEC

Oki Electric Industry 

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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