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
PINOUT
ꢀ 512fs (22.5792MHz, fs = 44.1kHz), 1:2 to 2:1
duty master clock
(Top view)
ꢀ DSD input and PCM output clock master/slave
switching
ꢀ 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)
ꢀ Decimation filter coefficients
• Fixed coefficients: 4fs-1/2fs-1/fs-1
ꢀ PCM output mute operation
ꢀ PCM output format: [MSB-first left-justified 32-
bit] or [IIS 32-bit]
37
DSBCK 38
24 VSS
VDDL
23 POFLR
22 POCSW
21 POSLR
20 PLRCK
19 PBCK
18 VDDH
39
40
41
42
DSIFL
DSIFR
DSICT
DSISW
DSISL 43
44
45
MCKOUT
VSS
DSISR
17
16
DIRDSCK
SYNC 46
47
15 FMTPCM
14
13 VDDL
INIT
DIRPCK
(IIS 32-bit output bit clock frequency = 64 × word
clock frequency)
VSS 48
ꢀ 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)
ꢀ +6dB DSD gain switching function
ꢀ External/Internal system clock output switching
ꢀ 3.3V (3.0 to 3.6V) and 2.5V (2.3 to 2.7V) power
supplies
PACKAGE DIMENSIONS
(Unit: mm)
ꢀ −40 to 85°C operating temperature range
ꢀ 48-pin QFP package
9
7
0ꢀ4
0ꢀ1
APPLICATIONS
ꢀ Multi-channel SA-CD players
ꢀ SA-CD-compatible AV amplifiers
0 ~ 10
ORDERING INFORMATION
Device
Package
0ꢀ5
0ꢀ08
SM5819HQF
48 -pin QFP
+ 0ꢀ09
0ꢀ18 − 0ꢀ05
NIPPON PRECISION CIRCUITS INC.—1