ak4537 AKM Semiconductor, Inc., ak4537 Datasheet - Page 50

• Manufacturer Part Number: ak4537
• Description: 16-bit 6 Stereo Codec With Mic/hp/spk-amp
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
MS0202-E-04
Addr
05H
SPPS: Speaker-amp Power-Save-Mode
LOOP: Loopback ON/OFF
HPM: Mono output select of Headphone
FS2-0: Sampling frequency modes (see Table 3, Table 7)
0: Power Save Mode (Default)
1: Normal Operation
0: OFF (Default)
1: ON
0: Stereo (Default)
1: Mono.
Register Name
Mode Control 2
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.
When this bit is “1”, the ADC output is passed to the DAC input internally. The external input data to DAC is
ignored.
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”.
Default: “000” (fs=44.1kHz)
Default
R/W
R/W
FS2
D7
0
R/W
FS1
D6
0
- 50 -
R/W
FS0
D5
0
RD
D4
0
0
RD
D3
0
0
HPM
R/W
D2
0
LOOP
R/W
D1
0
[AK4537]
2005/04
SPPS
R/W
D0
0