AK4671_10 Datasheet, PDF (87/166 Pages) Asahi Kasei Microsystems – Stereo CODEC with MIC/RCV/HP-AMP

[AK4671]
■ Receiver-Amp (RCP/RCN pins)
When RCV bit = “1”, LOUT1/ROUT1 pins become RCP/RCN pins, respectively. Lch/Rch signal of DAC or
LIN1/RIN1/LIN2/RIN2/LIN3/RIN3/LIN4/RIN4 is output from the RCP/RCN pins which is BTL as (L+R) signal. The
load impedance is 32Ω (min). When the PMLO1 = PMRO1 bits = “0”, the mono receiver output enters power-down
mode and the output is Hi-Z. When the PMLO1 = PMRO1 bits = “1” and LOPS1 bit = “1”, mono receiver output enters
power-save mode. Pop noise at power-up/down can be reduced by changing PMLO1 and PMRO1 bits at LOPS1 bit =
“0”. When PMLO1 = PMRO1 bits = “1” and LOPS1 bit = “0”, mono receiver output enters in normal operation.
L1VL3-0 bits control the volume of mono receiver output.
L1VL2-0
Attenuation
6H
+12dB
5H
+6dB
(default)
4H
0dB
3H
−6dB
2H
−12dB
1H
−18dB
0H
MUTE
Table 68. Mono Receiver Output Volume Setting
PMLO1/RO1
0
1
LOPS1
Mode
RCP
RCN
x
Power-down
Hi-Z
Hi-Z
1
Power-save
Hi-Z
VCOM
0
Normal Operation Normal Operation Normal Operation
Table 69. Receiver-Amp Mode Setting (x: Don’t care)
(default)
PMLO1 bit
PMRO1 bit
LOPS1 bit
RCP pin
Hi-Z
Hi-Z
RCN pin Hi-Z ^VCOM
VCOM
Hi-Z
>1ms
>0
Figure 69. Power-up/Power-down Timing for Receiver-Amp
MS0666-E-02
- 87 -
2010/06