AK4373 Datasheet, PDF (79/98 Pages) Asahi Kasei Microsystems – Low Power Stereo DAC with HP/SPK-Amp

[AK4373]
Addr
0FH
Register Name
Mode Control 4
Default
D7
D6
D5
D4
D3
D2
D1
D0
0
0
0
0
AVOLC HPM MINH DACH
0
0
0
0
1
0
0
0
DACH: Switch Control from DAC to Headphone-Amp
0: OFF (default)
1: ON
MINH: Switch Control from MIN to HP-Amp
0: OFF (default)
1: ON
When MINH bit is “1”, monaural signal is input to HP-Amp.
HPM: Headphone-Amp Mono Output Select
0: Stereo (default)
1: Mono
When the HPM bit = “1”, DAC output signal is output to Lch and Rch of the Headphone-Amp as (L+R)/2.
HPM bit must be changed when DAC is powered-down.
AVOLC: ALC Block Digital Volume Control Mode Select
0: Independent
1: Dependent (dfault)
When AVOLC bit = “1”, AVL7-0 bits control both Lch and Rch volume level, while register values of
AVL7-0 bits are not written to AVR7-0 bits. When AVOLC bit = “0”, AVL7-0 bits control Lch level and
AVR7-0 bits control Rch level, respectively.
Addr Register Name
D7
10H Power Management 3
0
Default
0
D6
D5
D4
D3
D2
D1
D0
0
HPG
0
0
0
0
0
0
0
0
0
0
0
0
HPG: Headphone-Amp Gain Select (Table 38.)
0: 0dB (default)
1: +3.6dB
HPG bit must be changed when the Headphone-Amp is powered-down.
Addr Register Name
11H Digital Filter Select 1
Default
D7
D6
D5
D4
D3
D2
D1
D0
GN1
GN0
LPF
HPF
EQ
FIL3
0
0
0
0
0
0
0
0
0
0
FIL3: FIL3 (Stereo Separation Emphasis Filter) Coefficient Setting Enable
0: Disable (default)
1: Enable
When FIL3 bit is “1”, the settings of F3A13-0 and F3B13-0 bits are valid. When FIL3 bit is “0”, FIL3 block is
through (0dB).
EQ: EQ (Gain Compensation Filter) Coefficient Setting Enable
0: Disable (default)
1: Enable
When EQ bit is “1”, the settings of EQA15-0, EQB13-0 and EQC15-0 bits are valid. When EQ bit is “0”, EQ
block is through (0dB).
HPF: High pass filter Coefficient Setting Enable
0: Disable (default)
1: Enable
When HPF bit is “1”, the settings of F1A13-0 and F1B13-0 bits are valid. When HPF bit is “0”, HPF block is
through (0dB).
MS0991-E-00
- 79 -
2008/09