AK4128A Datasheet, PDF (44/50 Pages) Asahi Kasei Microsystems – 8ch 216kHz / 24-Bit Asynchronous SRC

[AK4128A]
SYSTEM DESIGN
Figure 48 and Figure 49 shows the system connection diagram. An evaluation board is available which demonstrates
application circuits, the optimum layout, power supply arrangements and measurement results.
• Parallel Control Mode (SPB pin = “L”).
•Synchronous Mode (INAS pin = “L”).
• OMCLK/XTI Input = X’tal mode
• Input PORT: Slave mode, IBICK1 lock mode (64FSI), 24 bit MSB justified
• Output PORT: Slave mode, 24 bit MSB justified
• Dither = OFF, DEM=OFF, PM2/1 pin= “H/L” (8ch mode)
C1= 0.1μF
C2=10μF
C3=1μF± 30%
3.3V
DSP1
+
C2
C1
C
C
+
C2
C3
C1
+
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49
1 IBICK2
FSI
64FSI
2 IMCLK
3 ILRCK1
4 IBICK1
5 DVDD1
C1
6 VSS2
7 SDTI4
8 SDTI1
9 SDTI2
10 SDTI3
11 IDIF0
12 IDIF1
13 IDIF2
14 ILRCK3
15 IBICK3
16 ILRCK4
Top View
XTO 48
XTI/OMCLK 47
OLRCK 46
OBICK 45
DVDD3 44
FSO
64FSO
C1
VSS4 43
SDTO4 42
SDTO1 41
SDTO2 40
SDTO3 39
ODIF0 38
ODIF1 37
CM0 36
CM1 35
CM2 34
TDM 33
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
C1
+
C2
DSP2
uP
Notes:
- All digital input pins should be not left floating.
- VSS1 -5 must be connected to the same ground plane.
- DVDD1-4 pins must be connected to the same power supply.
- Connect a 1μF (± 30%; including temperature characteristics) capacitor between the VD18 pin and DVSS. When
this capacitor is polarized, the positive polarity pin should be connected to the VD18 pin.
- Refer to Table 5 for the equivalent series resistance R1 and capacitance C values of the X’tal oscillator.
Figure 48. Typical Connection Diagram (Parallel Control Mode)
MS1242-E-00
- 44 -
2010/09