ak4646 AKM Semiconductor, Inc., ak4646 Datasheet - Page 46

• Manufacturer Part Number: ak4646
• Description: Stereo Codec With Mic/spk-amp
• Manufacturer: AKM Semiconductor, Inc.

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When the PMBP bit is set to “1”, the mono input is powered-up. When the BEEPS bit is set to “1”, the input signal from
the MIN pin is output to Speaker-Amp. When the BEEPH bit is set to “1”, the input signal from the MIN pin is output to
Headphone-Amp. When the BEEPL bit is set to “1”, the input signal from the MIN pin is output to the stereo line output
amplifier. The external resister Ri adjusts the signal level of MIN input. Table 38, and Table 39 show the typical gain
example at R
MS0557-E-02
Analog Mixing: Mono Input
i
= 20k  This gain is in inverse proportion to R
MIN
SPKG1-0 bits
Table 38. MIN Input
Table 39. MIN Input
00
01
10
11
LOVL1-0 bits
00
01
10
11
Ri
Figure 7. Block Diagram of MIN pin
ALC2 bit = “ 0 ”
+10.6dB
+4.6dB
+6.6dB
+8.6dB
LOUT/ROUT Output Gain (typ) at R
Speaker-Amp Output Gain (typ) at R
MIN
MIN
- 46 -
i
LOUT/ROUT
+2dB
+4dB
+6dB
.
0dB
SPP/SPN
BEEPS
BEEPL
ALC2 bit = “ 1 ”
+10.6dB
+12.6dB
+6.6dB
+8.6dB
(default)
LOUT/ROUT pin
SPP/SPN pin
i
i
= 20k Ω
= 20k Ω
(default)
[AK4646]
2007/05