SM5816AF_06 Datasheet, PDF (13/27 Pages) Nippon Precision Circuits Inc – 6-channel DSD-PCM Converter

SM5816AF
2fs output format
There are two 2fs output formats that can be set using FMT2FS. The output data is in 32-bit 2s complement
format.
However, when external inputs (EXID1, EXID2, EXILRCK, EXIBCK) are selected, the signals are output as-
is in through mode regardless of the format setting.
(1) MSB-first left-justified 32-bit (FMT2FS = “L”)
F2LRCK
F2BCK
F2**
(1/2fs)
31 30 29 28 2 1 0
MSB
LSB
Lch(F2SLR, F2FLREX1)
Center(F2CSWEX2)
31 30 29 28 2 1 0
Rch(F2SLR, F2FLREX1)
SubWoofer(F2CSWEX2)
31 30
F2**: F2SLR, F2FLREX1, F2CSWEX2 pins
I If more than 32 bit clock cycles are input during each word clock cycle HIGH-level or LOW-level interval,
data following the 32nd bit are output as “0”.
I When F2LRCK and F2BCK are set as outputs, there are 32 fixed bit clock cycles per word clock cycle
HIGH-level or LOW-level interval.
(2) IIS 32-bit (FMT2FS = “H”)
(1/2fs)
F2LRCK
F2BCK
F2** 1 0 31 30 29 4 3 2 1 0 31 30 29 4 3 2 1 0 31
MSB
LSB
Lch(F2SLR, F2FLREX1)
Center(F2CSWEX2)
Rch(F2SLR, F2FLREX1)
SubWoofer(F2CSWEX2)
F2**: F2SLR, F2FLREX1, F2CSWEX2 pins
I In this format, there are 32 bit clock cycles per word clock cycle regardless of the input/output settings.
SEIKO NPC CORPORATION —13