AK4648 Datasheet, PDF (89/119 Pages) Asahi Kasei Microsystems – Stereo CODEC with MIC/HP/SPK-AMP

[AK4648]
Addr
05H
Register Name
Mode Control 2
R/W
Default
D7
D6
D5
D4
D3
D2
D1
D0
PS1
PS0
FS3
MSBS BCKP
FS2
FS1
FS0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
0
0
0
0
0
0
0
0
FS3-0: Sampling Frequency Select (Table 6 and Table 7) and MCKI Frequency Select (Table 12)
FS3-0 bits select sampling frequency at PLL mode and MCKI frequency at EXT mode.
BCKP: BICK Polarity at DSP Mode (Table 18)
0: SDTO is output by the rising edge (“↑”) of BICK and SDTI is latched by the falling edge (“↓”). (Default)
1: SDTO is output by the falling edge (“↓”) of BICK and SDTI is latched by the rising edge (“↑”).
MSBS: LRCK Polarity at DSP Mode (Table 18)
0: The rising edge (“↑”) of LRCK is half clock of BICK before the channel change. (Default)
1: The rising edge (“↑”) of LRCK is one clock of BICK before the channel change.
PS1-0: MCKO Output Frequency Select (Table 10)
Default: “00” (256fs)
Addr
06H
Register Name
Timer Select
R/W
Default
D7
DVTM
R/W
0
D6
WTM2
R/W
0
D5
ZTM1
R/W
0
D4
ZTM0
R/W
0
D3
WTM1
R/W
0
D2
WTM0
R/W
0
D1
RFST1
R/W
0
D0
RFST0
R/W
0
RFST1-0: ALC First recovery Speed (Table 33)
Default: “00” (4 times)
WTM2-0: ALC Recovery Waiting Period (Table 30)
Default: “000” (128/fs)
ZTM1-0: ALC Limiter/Recovery Operation Zero Crossing Timeout Period (Table 29)
Default: “00” (128/fs)
DVTM: Digital Volume Transition Time Setting
0: 1061/fs (default)
1: 256/fs
This is the transition time between DVL/R7-0 bits = 00H and FFH.
MS0625-E-01
- 89 -
2007/06