ak5702 AKM Semiconductor, Inc., ak5702 Datasheet - Page 23

• Manufacturer Part Number: ak5702
• Description: 4-channel Adc With Pll & Mic-amp
• Manufacturer: AKM Semiconductor, Inc.

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When PMPLL bit is “1”, a fully integrated analog phase locked loop (PLL) generates a clock that is selected by the
PLL3-0 and FS3-0 bits. The PLL lock time is shown in Table 4, whenever the AK5702 is supplied to a stable clocks after
PLL is powered-up (PMPLL bit = “0” → “1”) or sampling frequency changes.
1) Setting of PLL Mode
Note 29. See Table 5 regarding the difference between PLL3-0 bits = “0110”(Mode 6) and “1001”(Mode 9).
2) Setting of sampling frequency in PLL Mode
When PLL reference clock input is MCKI pin, the sampling frequency is selected by FS3-0 bits as defined in Table 5.
Note 30. In case of PLL3-0 bits = “1001”
MS0623-E-00
Others
Mode
12
13
14
15
0
2
3
4
5
6
7
8
9
PLL Mode
Others
Mode
PLL3
Clock jitter is lower in Mode9 than Mode6 respectively.
10
11
14
15
0
1
2
3
4
5
6
7
bit
0
0
0
0
0
0
0
1
1
1
1
1
1
Table 5. Setting of Sampling Frequency at PMPLL bit = “1” and Reference Clock=MCKI pin
Others
PLL2
Bit
0
0
0
1
1
1
1
0
0
1
1
1
1
FS3 bit
0
0
0
0
0
0
0
0
1
1
1
1
PLL1
bit
0
1
1
0
0
1
1
0
0
0
0
1
1
Table 4. Setting of PLL Mode (fs: Sampling Frequency)
PLL0
FS2 bit
bit
0
0
1
0
1
0
1
0
1
0
1
0
1
0
0
0
0
1
1
1
1
0
0
1
1
Others
Clock Input
LRCK pin
BCLK pin
BCLK pin
MCKI pin
MCKI pin
MCKI pin
MCKI pin
MCKI pin
MCKI pin
MCKI pin
MCKI pin
MCKI pin
MCKI pin
Reference
PLL
N/A
Pin
FS1 bit
0
0
1
1
0
0
1
1
1
1
1
1
- 23 -
12MHz (Note 29)
Input Frequency
11.2896MHz
12.288MHz
19.2MHz
13.5MHz
FS0 bit
12MHz
24MHz
27MHz
13MHz
26MHz
32fs
64fs
0
1
0
1
0
1
0
1
0
1
0
1
1fs
11.024877kHz (Note 30)
7.349918kHz (Note 30)
14.69984kHz (Note 30)
22.04975kHz (Note 30)
29.39967kHz (Note 30)
44.0995kHz (Note 30)
Sampling Frequency
R[Ω]
6.8k
10k
10k
10k
10k
10k
10k
10k
10k
10k
10k
10k
10k
10k
10k
R and C of
VCOC pin
11.025kHz
22.05kHz
7.35kHz
14.7kHz
29.4kHz
44.1kHz
12kHz
16kHz
24kHz
32kHz
48kHz
8kHz
N/A
220n
220n
220n
C[F]
4.7n
4.7n
4.7n
4.7n
4.7n
4.7n
4.7n
4.7n
10n
10n
10n
10n
PLL Lock
(max)
80ms
40ms
40ms
40ms
40ms
40ms
40ms
40ms
40ms
60ms
60ms
Time
2ms
4ms
2ms
4ms
(default)
[AK5702]
(default)
2007/06