ML7029 Просмотр технического описания (PDF) - Oki Electric Industry

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ML7029

Multifunction ADPCM CODEC

Oki Electric Industry 

OKI Semiconductor

FEDL7029-03

ML7029

(3) CR2 (PCM CODEC operating mode setting and transmit/receive gain adjustment)

CR2

Initial Value

B7

B6

B5

B4

TX ON/OFF TX GAIN2 TX GAIN1 TX GAIN0

0

0

1

1

B3

RX

ON/OFF

0

B2

B1

B0

RX GAIN2 RX GAIN1 RX GAIN0

0

1

1

B7:

Transmit PCM signal ON/OFF;

0/ON, 1/OFF

B6, B5, B4: Transmit signal gain adjustment, refer to Table 2.

B3:

Receive PCM signal ON/OFF;

0/ON, 1/OFF

B2, B1, B0: Receive signal gain adjustment, refer to Table 2.

Table 2 Transmit/Receive Gain Setting (when SYNC = 8 kHz)

B6

B5

B4

0

0

0

0

0

1

0

1

0

0

1

1

1

0

0

1

0

1

1

1

0

1

1

1

Transmit Gain

–6 dB

–4 dB

–2 dB

0 dB

+2 dB

+4 dB

+6 dB

+8 dB

B2

B1

B0

0

0

0

0

0

1

0

1

0

0

1

1

1

0

0

1

0

1

1

1

0

1

1

1

Receive Gain

–6 dB

–4 dB

–2 dB

0 dB

+2 dB

+4 dB

+6 dB

+8 dB

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