[AK4646]
■ Analog Mixing: Mono Input
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 Ri = 20kΩ This gain is in inverse proportion to Ri .
Ri
BEEPL
MIN
LOUT/ROUT pin
BEEPS
SPP/SPN pin
Figure 7. Block Diagram of MIN pin
LOVL1-0 bits
MIN Æ LOUT/ROUT
00
01
10
11
0dB
(default)
+2dB
+4dB
+6dB
Table 38. MIN Input Æ LOUT/ROUT Output Gain (typ) at Ri = 20kΩ
SPKG1-0 bits
MIN Æ SPP/SPN
ALC2 bit = “0”
ALC2 bit = “1”
+6.6dB
00
01
10
11
+4.6dB
+6.6dB
+8.6dB
+10.6dB
(default)
+8.6dB
+10.6dB
+12.6dB
Table 39. MIN Input Æ Speaker-Amp Output Gain (typ) at Ri = 20kΩ
MS0557-E-05
2011/01
- 46 -
AKM [ ASAHI KASEI MICROSYSTEMS ]
