ak5700 AKM Semiconductor, Inc., ak5700 Datasheet - Page 22

• Manufacturer Part Number: ak5700
• Description: 16-bit ?? Mono Adc With Pll & Mic-amp
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
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 AK5700 is supplied to a stable clocks after
PLL is powered-up (PMPLL bit = “0” → “1”) or sampling frequency changes.
1) Setting of PLL Mode
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.
MS0569-E-01
Others
Mode
Note 24. See Table 5 regarding the difference between PLL3-0 bits = “0110”(Mode 6) and “1001”(Mode 9).
PLL Mode
12
13
14
15
0
2
3
4
5
6
7
8
9
Note 25. In case of PLL3-0 bits = “1001”
Others
Mode
10
11
14
15
PLL3
0
1
2
3
4
5
6
7
Clock jitter is lower in Mode9 than Mode6 respectively.
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
PLL0
FS2 bit
bit
0
0
1
0
1
0
1
0
1
0
1
0
1
Table 4. Setting of PLL Mode (*fs: Sampling Frequency)
0
0
0
0
1
1
1
1
0
0
1
1
Clock Input Pin
PLL Reference
Others
EXLRCK pin
EXBCLK pin
EXBCLK pin
MCKI pin
MCKI pin
MCKI pin
MCKI pin
MCKI pin
MCKI pin
MCKI pin
MCKI pin
MCKI pin
MCKI pin
N/A
FS1 bit
0
0
1
1
0
0
1
1
1
1
1
1
- 22 -
12MHz (Note24)
Input Frequency
11.2896MHz
12.288MHz
19.2MHz
13.5MHz
FS0 bit
12MHz
24MHz
27MHz
13MHz
26MHz
32fs
64fs
1fs
0
1
0
1
0
1
0
1
0
1
0
1
11.024877kHz (Note25)
7.349918kHz (Note25)
14.69984kHz (Note25)
22.04975kHz (Note25)
29.39967kHz (Note25)
44.0995kHz (Note25)
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
(max)
80ms
40ms
40ms
40ms
40ms
40ms
40ms
40ms
40ms
60ms
60ms
Lock
Time
PLL
2ms
4ms
2ms
4ms
Default
[AK5700]
Default
2006/12