ASAHI KASEI
[AK4537]
MS0202-E-04
2005/04
-
50
-
Addr
Register
Name
D7 D6 D5 D4 D3 D2 D1 D0
05H
Mode Control 2
FS2
FS1
FS0
0
0
HPM
LOOP
SPPS
R/W R/W
R/W
R/W
RD
RD
R/W
R/W
R/W
Default
0 0 0 0 0 0 0 0
SPPS: Speaker-amp
Power-Save-Mode
0: Power Save Mode (Default)
1: Normal Operation
When the SPPS bit = “1”, the Speaker-amp is in power-save-mode and the SPP pin becomes Hi-z and SPN pin
is set to HVDD/2 voltage. When the PMSPK bit = “1”, this bit is valid. After the PDN pin changes from “L”
to “H”, the PMSPK bit is “0”, which powers down Speaker-amp.
LOOP:
Loopback
ON/OFF
0:
OFF
(Default)
1: ON
When this bit is “1”, the ADC output is passed to the DAC input internally. The external input data to DAC is
ignored.
HPM: Mono output select of Headphone
0:
Stereo
(Default)
1:
Mono.
When the HPM bit = “1”, (L+R)/2 signals are output to Lch and Rch of the Headphone-amp. Both PMHPL
and PMHPR bits should be “1” when HPM bit is “1”.
FS2-0: Sampling frequency modes (see Table 3, Table 7)
Default: “000” (fs=44.1kHz)
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