AK7755EN_16 Datasheet, PDF (42/109 Pages) Asahi Kasei Microsystems – DSP with Mono ADC Stereo CODEC + Mic/Lineout Amp

[AK7755]
CONT0C: ADC, DAC Volume Transition Time and SDOUT1 Output Settings
W R Name D7 D6 D5
D4
D3 D2
D1
D0
Default
CCh 4Ch CONT0C DSM 0 ATSPAD ATSPDA 0 SELDO1[2] SELDO1[1] SELDO1[0] 00h
D7: DSM Delta Sigma Module Sampling CLK Setting
0: DSMCLK 256fs (default)
1: DSMCLK 12.288MHz
D5: ATSPAD ADC Volume Transition Time Setting
0: 1/fs (default)
1: 4/fs
D4: ATSPDA DAC Volume Transition Time Setting
0: 1/fs (default)
1: 4/fs
D2, D1, D0: SELDO1[2:0] SDOUT1 Pin Output Select
SELDO1 mode SELDO1[2:0] Output Data
0
000
DSP DOUT1 (default)
1
001
GP0
2
010
SDIN1
3
011
SDOUTAD
4
100
EEST
5
101
SDOUTAD2
6
110
N/A
7
111
N/A
The output format is fixed to MSB 24-bit when selecting SDOUTAD or SDOUTAD2.
Write “0” into the “0” registers.
CONT0D: STO Status Read and EEPROM Download Setting
W R Name D7 D6 D5 D4 D3 D2 D1 D0 Default
CDh 4Dh CONT0D STO 1
0
0
0
0
0
DLS 80h
D7: STO Status Output
0: Internal Error Status
1: Normal Operation (default)
This is a read only register.
D6: 1
Thise bit should be set to “1” during system reset (CRESETN bit (CONT0F:D3) = “0” and
DSPRESETN bit (CONT0F: D2) = “0”).
D0: DLS Start EEPROM Downloading
0: Normal Operation (default)
1: Start EEPROM Downloading
This setting is valid when the I2CSEL pin= “H”. Register settings and DSP programs can be
downloaded from an external EEPROM by setting the EXTEEP pin = “H” or DLS bit = “1”.
However, when selecting memory mat (I2CSEL pin = MATSEL pin = “H”), downloading cannnot be
executed by DLS bit.
Write “0” into the “0” registers.
014006643-E-00
- 42 -
2014/10