ak4372 ETC-unknow, ak4372 Datasheet - Page 16

• Manufacturer Part Number: ak4372
• Description: Dac With Built-in Pll & Hp-amp
• Manufacturer: ETC-unknow

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There are the following six clock modes to interface with external devices
Mode
PLL Master Mode
PLL Slave Mode 1
(PLL Reference Clock: MCKI pin)
PLL Slave Mode 2
(PLL Reference Clock: BICK pin)
PLL Slave Mode 3
(PLL Reference Clock: LRCK pin)
EXT Master Mode
EXT Slave Mode
Mode
PLL Master Mode
PLL Slave Mode 1
(PLL Reference Clock: MCKI pin)
PLL Slave Mode 2
(PLL Reference Clock: BICK pin)
PLL Slave Mode 3
(PLL Reference Clock: LRCK pin)
EXT Master Mode
EXT Slave Mode
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The M/S bit selects either master or slave mode. M/S bit = “1” selects master mode and “0” selects slave mode. When the
AK4372 is power-down mode (PDN pin = “L”) and exits reset state, the AK4372 is slave mode. After exiting reset state,
the AK4372 changes to master mode by setting M/S bit = “1”.
When the AK4372 is in master mode, the LRCK and BICK pins are a floating state until M/S bit becomes “1”. The LRCK
and BICK pins of the AK4372 should be pulled-down or pulled-up by a resistor (about 100kΩ) externally to avoid the
floating state.
MS0684-E-02
System Clock
Master Mode/Slave Mode
Table 1. Clock Mode Setting (x: Don’t care)
M/S bit
Table 2. Clock pins state in Clock Mode
0
1
MCKO bit
Table 3. Select Master/Slave Mode
OPERATION OVERVIEW
0
1
0
1
0
0
0
0
PMPLL bit
1
1
1
1
0
0
Master Mode
Slave Mode
Selected by
Selected by
MCKO pin
PS1-0 bits
PS1-0 bits
Mode
- 16 -
L
L
L
L
L
L
M/S bit
1
0
0
0
1
0
PLL4-0 bits
PLL4-0 bits
Selected by
Selected by
Selected by
Selected by
MCKI pin
FS3-0 bits
FS3-0 bits
(Table 1
(default)
GND
GND
and
PLL3-0 bits
See
See
See
See
Table
(32fs ∼ 64fs)
PLL4-0 bits)
(32fs ∼ 64fs)
(32fs ∼ 64fs)
(Selected by
(Selected by
(Selected by
Table 4
Table 4
Table 4
Table 4
BICK pin
x
x
Output
BF bit)
Output
BF bit)
Input
Input
Input
Input
2).
Figure 11
Figure 12
Figure 13
Figure 14
Figure 15
Figure 16
LRCK pin
Figure
Output
Output
Input
Input
Input
Input
(1fs)
(1fs)
(1fs)
(1fs)
(1fs)
(1fs)
[AK4372]
2008/12