AK4137EQ Datasheet, PDF (56/65 Pages) Asahi Kasei Microsystems – 32bit SRC with PCM/DSD conversion

[AK4137]
Addr Register Name D7
D6
D5
D4
D3
D2
D1
D0
01H PCMONT0 SLOW SD DEM1 DEM0 ASCHOFF IDIF2 IDIF1 IDIF0
R/W
R/W R/W R/W R/W
RD
R/W R/W R/W
Default
0
0
0
1
0
0
1
0
SLOW: FIR1 Filter Coefficient Select
0: Sharp Roll OFF Filter (default)
1: Slow Roll OFF Filter
In Serial Control Mode (PSN pin = “L”), the SDA/CDTI/SLOW pin functions as SDA/CDTI pin and
SLOW setting is ignored.
In Parallel Control Mode (PSN pin = “H”), the SLOW pin setting is valid.
SD: FIR1 Filter Coefficient Select
0: Normal Delay Filter (default)
1: Short Delay Filter
In Serial Control Mode (PSN pin = “L”), the SCL/CCLK/SD pin functions as SCL/CCLK pin and SD
setting is ignored.
In Parallel Control Mode (PSN pin = “H”), the SD pin setting is valid.
DEM1, DEM0: De-emphasis Control
00: 44.1KHz
01: OFF (default)
10: 48KHz
11: 32KHz
In Parallel Control Mode (PSN pin = “H”), the setting of the DEM1 and DEM0 pins is valid.
ASCHOFF: Auto Input Source Change Mode OFF
0: Auto Input Source Change Mode (default)
1: Auto Input Source Change Mode OFF
IDIF2, IDIF1, IDIF0: Audio Interface Mode Select for Input Port (Table 1)
000: 32bit, LSB justified
001: 24bit, LSB justified
010: 32bit, MSB justified (default)
011: 32 or 16bit, I2S justified
100: TDM 32bit, MSB justified
101: TDM 32bit, I2S Compatible
110: TDM 32bit, MSB justified
111: TDM 32bit, I2S Compatible
In Parallel Control Mode (PSN pin = “H”), IDIF2, IDIF1 and IDIF0 settings are valid.
Rev. 0.2
- 56 -
2014/06