AK4635 AKM [Asahi Kasei Microsystems], AK4635 Datasheet - Page 77

• Manufacturer Part Number: AK4635
• Description: 16-Bit Mono CODEC with ALC & MIC/SPK/Video-AMP
• Manufacturer: AKM [Asahi Kasei Microsystems]

Figure 63
optimum layout, power supply arrangements and measurement results.
< MIC Single-end Input >
Rev. 0.6
Notes:
Analog Supply
- VSS1, VSS2 and VSS3 of the AK4635 should be distributed separately from the ground of external controllers.
- All digital input pins except pull-down pin should not be left floating.
- In EXT mode (PMPLL bit = “0”), Rp and Cp of the VCOC pin can be open.
- In PLL mode (PMPLL bit = “1”), Rp and Cp of the VCOC pin should be connected as shown in
- When the AK4635 is used at master mode, FCK and BICK pins are floating before M/S bit is changed to “1”.
-When AVDD, DVDD and SVDD were distributed, DVDD = 1.6 ~ 3.6 V, SVDD = 2.2 ~ 4.0 V.
DSP
µP
Therefore, a pull-up resistor with around 100Ω should be connected to LRCK and BICK pins of the AK4635.
and
&
2.8∼3.6V
Figure 64
75
10µ
show the system connection diagram. The evaluation board [AKD4635] demonstrates the
Cs
Cv
+
+
Figure 63. Typical Connection Diagram
10
SDTO
VSAG
BICK
FCK
PDN
I2C
SYSTEM DESIGN
MCKO
DVDD
SDTI
CCLK
CSN
0.1µ
Top View
- 77 -
VSS2
VOUT
MCKI
CDTI
SPN
VSS1
0.1µ
VCOM
VSS3
AOUT
SVDD
AVDD
MPI
0.1µ
VCOC
SPP
MIC
VIN
NC
LIN
Rp
2.2k
1µ
1µ
1µ
0.1µ
Cp
220
R1
R2
Dynamic SPK
Piezo SPK
R1, R2: Short
ZD1, ZD2: Open
R1, R2: ≥10Ω
ZD1, ZD2: Required
ZD2
0.1µ
Speaker
ZD1
20 k
+
Table
[AK4635]
2.2µ
2007/10
48.