SM5819HQF Datasheet, PDF (11/18 Pages) Nippon Precision Circuits Inc – 6-channel DSD-PCM Converter

SM5819HQF
FUNCTIONAL DESCRIPTION
Data Input/Output Formats
DSD input format
DSD input data is read in on the rising edge of the DSBCK bit clock.
DSBCK
(1/64fs)
DSI**
DSI**: DSIFL, DSIFR, DSISL, DSISR, DSICT, DSISW pins
PCM output format
The PCM output format can be assigned to either of two types below using FMTPCM. The output data is in 32-
bit 2s complement form. The PLRCK and PBCK frequencies are set in response to the fs/2fs/4fs switch mode.
However, when external inputs are selected, the inputs are passed to the output in through mode, regardless of
the assigned format.
(1) MSB-first left-justified 32-bit (FMTPCM = “L”)
PLRCK
(1/fs, 1/2fs, or 1/4fs)
PBCK
PO**
31 30 29 28
MSB
210
LSB
31 30 29 28 2 1 0
Lch (POSLR, POFLR)
Center (POCSW)
Rch (POSLR, POFLR)
SubWoofer (POCSW)
PO**: POFLR, POSLR, POCSW pins
31 30
I If more than 32 bit clock cycles are input during a word clock cycle HIGH-level or LOW-level pulse, all bits
after the 32nd bit are output as “0”.
I When PLRCK and PBCK are set to output mode, the number of bit clock cycles during a word clock HIGH-
level or LOW-level pulse is fixed at 32.
(2) IIS 32-bit (FMTPCM = “H”)
(1/fs, 1/2fs, or 1/4fs)
PLRCK
PBCK
PO** 1
0 31 30 29 4 3 2 1 0 31 30 29 4 3 2 1 0 31
MSB
LSB
Lch (POSLR, POFLR)
Center (POCSW)
Rch (POSLR, POFLR)
SubWoofer (POCSW)
PO**: POFLR, POSLR, POCSW pins
I In this format, there are 32 bit clock cycles per word clock cycle regardless of the input/output settings.
NIPPON PRECISION CIRCUITS INC.—11