ak4634 AKM Semiconductor, Inc., ak4634 Datasheet - Page 74

• Manufacturer Part Number: ak4634
• Description: 16-bit Mono Codec With Alc & Mic/spk-amp
• Manufacturer: AKM Semiconductor, Inc.

Others
Mode
12
13
< MIC differential Input >
Rev. 0.5
0
1
2
3
6
7
Notes:
PLL3
- VSS1, VSS2 and VSS3 of the AK4634 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 AK4634 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.
bit
0
0
0
0
0
0
1
1
Therefore, a pull-up resistor with around 100Ω should be connected to LRCK and BICK pins of the AK4634.
Analog Supply
DSP
µP
&
2.2∼3.6V
PLL2
bit
0
0
0
0
1
1
1
1
Others
Table 45. Setting of PLL Mode (*fs: Sampling Frequency, N/A: Not available)
PLL1
bit
0
0
1
1
1
1
0
0
10µ
+
PLL0
bit
0
1
0
1
0
1
0
1
Figure 58. Typical Connection Diagram
Clock Input Pin
PLL Reference
MCKI pin
MCKI pin
MCKI pin
MCKI pin
BICK pin
BICK pin
BICK pin
FCK pin
10
N/A
SDTO
BICK
TST1
FCK
PDN
I2C
MCKO
DVDD
SDTI
CCLK
CSN
- 74 -
0.1µ
Top View
Input Frequency
VSS2
MCKI
CDTI
TST2
SPN
VSS1
13.5MHz
12MHz
24MHz
27MHz
16fs
32fs
64fs
0.1µ
1fs
VCOM
VSS3
SVDD
AOUT
AVDD
MPI
0.1µ
VCOC
TST3
SPP
MICP
MICN
NC
Rp[Ω]
Rp and Cp of
6.8k
10k
10k
10k
10k
10k
10k
10k
VCOC pin
Rp
1µ
1µ
1µ
1k
Cp
Cp[F]
220n
4.7n
4.7n
4.7n
4.7n
4.7n
10n
10n
220
R1
R2
Dynamic SPK
Piezo SPK
R1, R2: Short
ZD1, ZD2: Open
R1, R2: ≥10Ω
ZD1, ZD2: Required
ZD2
1k
Time (max)
PLL Lock
0.1µ
160ms
30ms
30ms
30ms
30ms
2ms
2ms
2ms
Speaker
Table
ZD1
20 k
[AK4634]
+
2007/10
45.
(default)
2.2µ