ML7204-003 Datasheet, PDF (147/214 Pages) LAPIS Semiconductor Co., Ltd. – VoIP CODEC

FEDL7204-003-02
ML7204-003
E-4: Internal data memory for adjustment of CH2 transmit gain (TXGAIN_CH2)
A transmit gain of channel 2 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-5: Internal data memory for adjustment of CH2 receiveCH1 transmit loop back gain (RX2TX1_GAIN)
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-6: Internal data memory for adjustment of CH1 receiveCH2 transmit loop back gain (RX1TX2_GAIN)
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)
147/214