ak4538 AKM Semiconductor, Inc., ak4538 Datasheet - Page 49

• Manufacturer Part Number: ak4538
• Description: 16bit ?? Codec With Mic/hp/spk-amp
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
MS0198-E-01
Addr
05H
SPPS: Speaker-amp Power-Save-Mode
LOOP: Loopback ON/OFF
HPM: Mono output select of Headphone
HPLM: Lch of HP-Amp output control
HPRM: Rch of HP-Amp output control
FS2-0: Sampling frequency modes (see Table 3 and Table 7)
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
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.
0: Stereo (Default)
1: Mono.
0: Enable output from Rch of Headphone-amp (Default)
1: Lch mono output of Headphone-amp. The PMHPR bit can be powered down at this time.
0: Enable output from Lch of Headphone-amp (Default)
1: Rch mono output of Headphone-amp. The PMHPL bit can be powered down at this time.
Default: “000” (fs=44.1kHz)
(L+R)/2
(L+R)/2
Register Name
Mode Control 2
When the HPM bit = “1”, (L+R)/2 signals are output to Lch and Rch of the Headphone-amp.
Lch
L
L
Output Channel
-
-
Default
R/W
(L+R)/2
(L+R)/2
Rch
R
R
-
-
Table 25. Output control for Headphone-amp
PMHPL
R/W
FS2
D7
0
1
1
0
1
1
0
PMHPR
R/W
FS1
D6
0
1
0
1
1
0
1
- 49 -
R/W
FS0
D5
0
HPL
0
0
1
0
0
1
HPRM
R/W
Register bit
D4
0
HPR
0
1
0
0
1
0
HPLM
R/W
D3
0
HPM
0
0
0
1
1
1
HPM
R/W
D2
0
HPLM
0
1
0
0
1
0
LOOP
R/W
D1
0
HPRM
[AK4538]
0
0
1
0
0
1
SPPS
R/W
2003/5
D0
0