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

[AK4137]
SDTI
ILRCK
IBICK
DSDIR
DSDIL
IDCLK
PDN
I2C
PSN
PCM
Input
Serial
Audio
I/F
DSD
Internal
OSC
UP/IF
REF
Internal
Regulator
PCM
Output
Serial
Audio
I/F
DSD
X’tal
OSC
Clock
Div.
SDTO/DSDOR
OLRCK/DSDOL
OBICK/ODCLK
MCKO
TEST1
TEST0
DVSS
DVDD
Figure 22. Bypass Mode (AK4137: DSDIN → DSDOUT)
In SRC bypass mode, when the AK4137 is in master mode, SDTI input data is clocked in by ILRCK
and IBICK according to the audio interface format shown in Table 1. SDTO output data is clocked out
by ILRCK and IBICK according to the audio interface format shown in Table 4 and Table 5. In this
case, ILRCK is directly output from the OLRCK pin, and IBICK1 is directly output from the OBICK pin.
■ Slave Mode
Both OLRCK and OBICK pins are input when the AK4137 is in slave mode.
Rev. 0.2
- 32 -
2014/06