ak4642e AKM Semiconductor, Inc., ak4642e Datasheet - Page 44

• Manufacturer Part Number: ak4642e
• Description: Stereo Codec With Mic/hp/spk-amp
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
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 33, Table 34 and Table 35 show the typical
gain example at R
MS0420-E-00
Analog Mixing: Mono Input
MIN
i
= 20kΩ. This gain is in inverse proportion to R
SPKG1-0 bits
Table 34. MIN Input
Table 33. MIN Input
Table 35. MIN Input
00
01
10
11
LOVL bit
HPG bit
0
1
0
1
Ri
Figure 7. Block Diagram of MIN pin
ALC bit = “0”
+10.65dB
+12.65dB
+4.43dB
+6.43dB
Headphone-Amp Output Gain (typ) at R
LOUT/ROUT Output Gain (typ) at R
Speaker-Amp Output Gain (typ) at R
MIN
MIN
MIN
- 44 -
−16.4dB
−20dB
LOUT/ROUT
+2dB
0dB
HPL/HPR
SPP/SPN
i
.
BEEPH
BEEPS
BEEPL
ALC bit = “1”
+12.65dB
+14.65dB
+6.43dB
+8.43dB
Default
Default
LOUT/ROUT pin
HPL/HPR pin
SPP/SPN pin
i
i
= 20kΩ
= 20kΩ
i
= 20kΩ
Default
[AK4642EN]
2005/09