ML7204-003 Datasheet, PDF (146/214 Pages) LAPIS Semiconductor Co., Ltd. – VoIP CODEC

FEDL7204-003-02
ML7204-003
E. Gain related to three-way communication
E-1: Internal data memory for adjustment of CH1 receive gain (RXGAIN_CH1)
A receive gain at single channel operation (SC_EN = 1, DC_EN = 0) in Speech CODEC and a channel 1
receive gain at 2-channel operation (SC_EN-1, DC_EN = 1) can be set.
Initial value: 0080h (0.0 dB)
Use the following calculation expression when changing the gain amount.
Calculation expression: 0080hGAIN
<Example> Set the gain amount to +6 dB (2).
0080h2 = 0100h
Upper limit: About +40 dB (Data: 3200h)
: 0 dB
(Data: 0080h)
Lower limit: About 42 dB (Data: 0001h)
: MUTE
(Data: 0000h)
E-2: Internal data memory for adjustment of CH2 receive gain (RXGAIN_CH2)
A channel 2 receive gain at 2-channel operation (SC_EN-1, DC_EN = 1) in Speech CODEC can be set.
Initial value: 0080h (0.0 dB)
Use the following calculation expression when changing the gain amount.
Calculation expression: 0080hGAIN
<Example> Set the gain amount to +6 dB (2).
0080h2 = 0100h
Upper limit: About +40 dB (Data: 3200h)
: 0 dB
(Data: 0080h)
Lower limit: About 42 dB (Data: 0001h)
: MUTE
(Data: 0000h)
E-3: Internal data memory for adjustment of CH1 transmit gain (TXGAIN_CH1)
A transmit gain at single channel operation (SC_EN = 1, DC_EN = 0) in Speech CODEC and a channel 1
transmit gain at 2-channel operation (SC_EN-1, DC_EN = 1) can be set.
Initial value: 0080h (0.0 dB)
Use the following calculation expression when changing the gain amount.
Calculation expression: 0080hGAIN
<Example> Set the gain amount to +6 dB (2).
0080h2 = 0100h
Upper limit: About +40 dB (Data: 3200h)
: 0 dB
(Data: 0080h)
Lower limit: About 42 dB (Data: 0001h)
: MUTE
(Data: 0000h)
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