CDB4328 International Power Sources, Inc., CDB4328 Datasheet - Page 23

• Manufacturer Part Number: CDB4328
• Description: 18-bit, Stereo D/A Converter For Digital Audio
• Manufacturer: International Power Sources, Inc.

U3, Pin 3
U3, Pin 6
U3, Pin 8
U3, Pin 11
The CS4328 supports four serial data input for-
mats. The selection of which is made via the
digital input format pins DIF0 and DIF1. The
different formats control the relationship of L/R
to SDATA and the edge of SCLK used to latch
the data. Consult the CS4328 data sheet for an
explanation of the different formats.
DS62DB2
EXT CLK
Position
8412
Table 1. JP3 Selectable Options
L/R SCLK SDATA MCLK
VD+
SDATA,SCLK, L/R provided
by an external source.
SDATA,SCLK, L/R provided
by the CS8412
1 uF
C26
Input Option Selected
From
Reset
Circuit
+
TP
TP
TP
TP
0.1 uF
23
20
19
18
14
15
C25
7
9
Figure 2. CS4328 DAC Connections
NC
NC
LRCK
BICK
SDATAI
XTI
XTO
RST
TST DGND
10
VD+
16
17
JP2
ACKO
VD+
CKS
22
CS4328
11
U1
ACKI
R11
47k
System Timing
The master clock input to the CS4328 can be
provided by several sources. JP3 selects the
source of the master clock that is to be supplied
to the XTI pin of the converter. When EXT
CLK is selected, the master clock is provided by
one of two sources. The 12.288 MHz clock sig-
nal provided by U8 can be used as the master
clock for both the CS4328 and the external sys-
tem that provides the serial data to the board.
The other option is for a master clock that is
synchronized to the external serial data coming
into the board, be used as the master clock for
the CS4328 as well. However, if an external
24
DIFO
VD+
VA+
13
3
AGND1
AGND3
AOUTR
AGND2
AOUTL
DIFI
CMPO
VREF
CALO
CMPI
CALI
12
VA-
25
1
5
21
27
26
28
4
6
8
2
C16
0.1 uF
51
51
R5
R6
C22
0.1 uF
C21
0.1 uF
C23
0.1 uF
TP
TP
C18
10 nF NPO
C19
10 nF NPO
C17
10 uF
CDB4328
+
+
C20
1.0 uF
+
C24
1.0 uF
AOUTL
AOUTR
+5V Analog,
VA+
-5V Analog,
VA-
23