AK4536 Datasheet, PDF (22/59 Pages) Asahi Kasei Microsystems – 16-Bit Mono CODEC with ALC & MIC/SPK-AMP

ASAHI KASEI
[AK4536]
n System Clock
There are the following three methods to interface with external devices. (See Table 8)
Mode
Pin
PLL
(PMPLL bit = “1”)
EXT
(PMPLL bit = “0”)
Master Mode (M/S bit = “1”)
Slave Mode (M/S bit = “0”)
MCKI/XTI
BICK
FCK
MCKI/XTI
BICK
11.2896MHz/
12MHz/
16fs/32fs/64fs
fs
GND
16fs/32fs/64fs
12.288MHz
Output
Output (MCKPD bit = “1”)
Input
Input
Don’t use (Note 27)
256fs/512fs/1024fs
Input
≥ 32fs
Input
Table 8. Clock Operation
FCK
fs
Input
fs
Input
Note 27. If this mode is selected, the irregular clocks are output from FCK and BICK pins.
1) PLL, Master Mode (PMPLL bit = “1”, M/S bit = “1”)
When the AK4536 is connected to X’tal oscillator or an external clock (11.2896MHz, 12MHz or 12.288MHz) is input to
MCKI pin, the BICK and FCK clocks are generated by an internal PLL circuit. The BICK is selected among 16fs, 32fs or
64fs, by BCKO1-0 bits. (See Table 9)
Audio interface format corresponds to Mode 0 (DSP Mode) only.
AK4536
XT O
MCKI/XTI
BICK
FCK
SDTO
SDTI
16fs, 32fs, 64fs
1fs
DSP or µP
BCLK
FCK
SDTI
SDTO
Mode
0
1
2
3
Figure 18. PLL & Master Mode
BCKO1 bit BCKO0 bit BICK Output Frequency
0
0
16fs
0
1
32fs
1
0
64fs
1
1
N/A
Table 9. Output Frequency of BICK at Master Mode
Default
MS0174-E-00
- 22 -
2002/09