AK4695 Datasheet, PDF (74/107 Pages) Asahi Kasei Microsystems – 24bit 4ch CODEC with MIC/HP/SPK/LINE-AMP

[AK4695]
DACB
LOUTB pin
ROUTB pin
C
External Input
R_L
Figure 51. External Circuit for Stereo Line Output B
[Stereo Line Output B Control Sequence (in case of using external MUTE circuit)]
(1)
(9)
PMSPLO bit
LOPSB bit
(3)
(4)
Power
Save
(7)
(8)
Power
Save
LOUTB pin
ROUTB pin
External Input
GPO11, 10 bits
(External MUTE)
(2)
MUTE
(5)
(6)
Normal Operation
Hi-Z
MUTE
Figure 52. Stereo Line Output B Control Sequence (in case of using external MUTE circuit)
(1) Set PMSPLO bit = “1”. Stereo line output B exits power-down mode.
LOUT and ROUT pins rise up to common voltage.
(2) Time constant is defined according to external capacitor (C) and resistor (R_L)_.
(3) Set LOPSB bit = “1”. Stereo line output B enters power-save mode.
In this mode, the power consumption is reduced.
(4) Set LOPSB bit = “0”. Stereo line output B exits power-save mode.
(5) Release external MUTE when the external input is stabled. GPO11, 10 bits = “10” (“H” output).
Stereo line output is enabled.
(6) Set external MUTE ON. GPO11, 10 bits = “01” (“L” output)
(7) Set LOPSB bit = “1”. Stereo line output B enters power-save mode.
In this mode, the power consumption is reduced.
(8) Set LOPSB bit = “0”. Stereo line output B exits power-save mode.
(9) Set PMSPLO bit = “0”. Stereo line output B enters power-down mode.
LOUTB and ROUTB pins are in Hi-Z state.
MS1463-E-01
- 74 -
2014/12