SM5819HQF Datasheet, PDF (1/18 Pages) Nippon Precision Circuits Inc – 6-channel DSD-PCM Converter

SM5819HQF
6-channel DSD-PCM Converter
OVERVIEW
The SM5819HQF is a 6-channel DSD data (64fs) to 4fs, 2fs or fs PCM data converter. During conversion, dec-
imation filtering is performed using a filter with selectable fixed coefficients (3 sets). Also, DSD inputs and
PCM outputs are available for use in master/slave clock mode operation, in a wide range of system configura-
tions, making it easy to construct a multi-channel DSD/PCM reproduction system.
FEATURES
I 512fs (22.5792MHz, fs = 44.1kHz), 1:2 to 2:1
duty master clock
I DSD input and PCM output clock master/slave
switching
I 3-system external data input (3-wire format),
PCM output data/BCK/LRCK external input and
internal filter output switching
(BCK and LRCK are common to all 3 external
PCM data inputs)
I Decimation filter coefficients
• Fixed coefficients: 4fs-1/2fs-1/fs-1
I PCM output mute operation
I PCM output format: [MSB-first left-justified 32-
bit] or [IIS 32-bit]
(IIS 32-bit output bit clock frequency = 64 × word
clock frequency)
I FIR filter coefficients
• 64fs → 4fs/2fs/fs: 960th-order (6-channel)
• ROM coefficients: 24 valid data bits (4-bit MSB
extension at 4fs, 5-bit MSB extension at 2fs/fs)
I +6dB DSD gain switching function
I External/Internal system clock output switching
I 3.3V (3.0 to 3.6V) and 2.5V (2.3 to 2.7V) power
supplies
I −40 to 85°C operating temperature range
I 48-pin QFP package
PINOUT
(Top view)
VDDL 37
DSBCK 38
DSIFL 39
DSIFR 40
DSICT 41
DSISW 42
DSISL 43
DSISR 44
DIRDSCK 45
SYNC 46
INIT 47
VSS 48
PACKAGE DIMENSIONS
(Unit: mm)
9 ± 0.4
7 ± 0.1
APPLICATIONS
I Multi-channel SA-CD players
I SA-CD-compatible AV amplifiers
24 VSS
23 POFLR
22 POCSW
21 POSLR
20 PLRCK
19 PBCK
18 VDDH
17 MCKOUT
16 VSS
15 FMTPCM
14 DIRPCK
13 VDDL
0.125
+
−
0.075
0.025
ORDERING INFORMATION
Device
SM5819HQF
Package
48 -pin QFP
0.5
0.08
+ 0.09
0.18 − 0.05
0 ~ 10
NIPPON PRECISION CIRCUITS INC.—1