AK4691EG AKM [Asahi Kasei Microsystems], AK4691EG Datasheet - Page 51

• Manufacturer Part Number: AK4691EG
• Description: 4ch ADC + 2ch DAC with MIC/HP/SPK-AMP
• Manufacturer: AKM [Asahi Kasei Microsystems]

■
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 BEEP pin is output to Speaker-Amp. When the BEEPH bit is set to “1”, the input signal from the BEEP pin is output
to Headphone-Amp. When the BEEPL bit is set to “1”, the input signal from the BEEP pin is output to the stereo line
output amplifier. The external resister Ri adjusts the signal level of BEEP input.
typical gain example at R
MS0672-E-00
Analog Mixing: Mono Input
Table 41. BEEP Input
LVOL2 bit
Signal
SPKG1-0 bits
0
0
0
0
1
1
1
Table 42. BEEP Input
Table 43. BEEP Input
00
01
10
11
i
= 20kΩ. This gain is in inverse proportion to R
LVOL1 bit
HPG bit
BEEP pin
0
0
1
1
0
0
1
0
1
Ri
LOUT/ROUT Output Gain (typ) at R
Figure 32. Block Diagram of BEEP pin
ALC bit = “0”
+10.65dB
+12.65dB
+4.43dB
+6.43dB
Headphone-Amp Output Gain (typ) at R
LVOL0 bit
Speaker-Amp Output Gain (typ) at R
BEEP
0
1
0
1
0
1
x
BEEP
- 51 -
−16.4dB
−20dB
HPL/HPR
SPP/SPN
BEEP
BEEPH bit
BEEPS bit
BEEPL bit
ALC bit = “1”
+12.65dB
+14.65dB
+6.43dB
+8.43dB
i
.
+5.9dB
+6.5dB
+7.1dB
+2dB
i
LOUT/ROUT
N/A
N/A
0dB
= 20kΩ (N/A: Not available)
Table
(default)
41,
LOUT/ROUT pin
HPL/HPR pin
SPP/SPN pin
i
= 20kΩ
Table 42
i
= 20kΩ
(default)
(default)
and
Table 43
[AK4691]
show the
2007/11