AK4635 AKM [Asahi Kasei Microsystems], AK4635 Datasheet - Page 26

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

■
The M/S bit selects either master or slave modes. M/S bit = “1” selects master mode and “0” selects slave mode. When the
AK4635 is power-down mode (PDN pin = “L”) and exits reset state, the AK4635 is slave mode. After exiting reset state,
the AK4635 changes to master mode by bringing M/S bit = “1”.
When the AK4635 is in master mode, FCK and BICK pins are a floating state until M/S bit becomes “1”. The FCK and
BICK pins of the AK4635 should be pulled-down or pulled-up by about 100kΩ resistor externally to avoid the floating
state.
■
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
after PLL is powered-up (PMPLL bit = “0” → “1”) or when the sampling frequency changes, the PLL lock time is the
same.
1) Setting of PLL Mode
Note 37. the tolerance of R is ±5%, the tolerance of C is ±30%
2) Setting of sampling frequency in PLL Mode.
Rev. 0.6
Others
Mode
When PLL2 bit is “1” (PLL reference clock input is the MCKI pin), the sampling frequency is selected by FS2-0 bits as
defined in
Master Mode/Slave Mode
PLL Mode
12
13
0
1
2
3
6
7
Table 5. Setting of Sampling Frequency at PLL2 bit = “1” and PMPLL bit = “1” (N/A: Not available)
PLL3
Others
Mode
bit
10
11
14
15
0
0
0
0
0
0
1
1
0
1
2
3
4
5
6
7
Table
Others
PLL2
5.
bit
0
0
0
0
1
1
1
1
Table 4. Setting of PLL Mode (*fs: Sampling Frequency, N/A: Not available)
FS3 bit
0
0
0
0
0
0
0
0
1
1
1
1
PLL1
bit
0
0
1
1
1
1
0
0
PLL0
bit
0
1
0
1
0
1
0
1
M/S bit
FS2 bit
0
0
0
0
1
1
1
1
0
0
1
1
0
1
Table 3. Select Master/Salve Mod
Clock Input Pin
PLL Reference
Others
MCKI pin
MCKI pin
MCKI pin
MCKI pin
BICK pin
BICK pin
BICK pin
FCK pin
N/A
FS1 bit
Master Mode
Slave Mode
0
0
1
1
0
0
1
1
1
1
1
1
Table
- 26 -
Mode
4. Ether when the AK4635 is supplied to a stable clocks
Frequency
13.5MHz
12MHz
24MHz
27MHz
Input
FS0 bit
16fs
32fs
64fs
1fs
0
1
0
1
0
1
0
1
0
1
0
1
(default)
Sampling Frequency
R[Ω]
6.8k
10k
10k
10k
10k
10k
10k
10k
R and C of
VCOC pin
(Note
11.025kHz
22.05kHz
7.35kHz
14.7kHz
29.4kHz
44.1kHz
12kHz
16kHz
24kHz
32kHz
48kHz
8kHz
N/A
37)
220n
C[F]
4.7n
4.7n
4.7n
4.7n
4.7n
10n
10n
PLL Lock
160ms
(max)
Time
20ms
20ms
20ms
20ms
2ms
2ms
2ms
(default)
[AK4635]
(default)
2007/10