ak4373 ETC-unknow, ak4373 Datasheet - Page 29

• Manufacturer Part Number: ak4373
• Description: Low Power Stereo Dac With Hp/spk-amp
• Manufacturer: ETC-unknow

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There are the following five 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: LRCK or BICK pin)
EXT Slave Mode
EXT Master Mode
Note 40. If M/S bit = “1”, PMPLL bit = “0” and MCKO bit = “1” during the setting of PLL Master Mode, the invalid
Mode
PLL Master Mode
PLL Slave Mode
(PLL Reference Clock: MCKI pin)
PLL Slave Mode
(PLL Reference Clock: LRCK or BICK pin)
EXT Slave Mode
EXT Master 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
AK4373 is power-down mode (PDN pin = “L”) and exits reset state, the AK4373 is slave mode. After exiting reset state,
the AK4373 goes to master mode by changing M/S bit = “1”.
When the AK4373 is in master mode, LRCK and BICK pins are a floating state until M/S bit becomes “1”. LRCK and
BICK pins of the AK4373 should be pulled-down or pulled-up by a resistor (about 100kΩ) externally to avoid the
floating state.
MS0991-E-00
System Clock
Master Mode/Slave Mode
clocks are output from MCKO pin when MCKO bit is “1”.
(Note
40)
Table 4. Select Master/Slave Mode
Table 2. Clock Mode Setting (x: Don’t care)
M/S bit
Table 3. Clock pins state in Clock Mode
0
1
OPERATION OVERVIEW
MCKO bit
PMPLL bit
0
1
0
1
0
0
0
1
1
1
0
0
Master Mode
Slave Mode
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Mode
Selected by
Selected by
MCKO pin
PS1-0 bits
PS1-0 bits
L
L
L
L
L
M/S bit
1
0
0
0
1
(default)
(Table 2
PLL3-0 bits
PLL3-0 bits
Selected by
Selected by
Selected by
Selected by
MCKI pin
FS1-0 bits
FS1-0 bits
GND
and
PLL3-0 bits
See
See
See
Table
Table 5
Table 5
Table 5
x
x
PLL3-0 bits)
(Selected by
(Selected by
(Selected by
BCKO bit)
BCKO bit)
BICK pin
(≥ 32fs)
(≥ 32fs)
Output
Output
Input
Input
Input
3).
Figure 24
Figure 25
Figure 26
Figure 27
Figure 28
Figure 29
Figure
LRCK pin
Output
Output
[AK4373]
Input
Input
Input
(1fs)
(1fs)
(1fs)
(1fs)
(1fs)
2008/09