AS3525-A/-B C22O22
Data Sheet, Confidential
7.4.14
Auxiliary Oscillator
7.4.14.1 General
This block is a low power oscillator, which can provide a clock to the digital core. CLK_OUT pad of the AFE is connected to clk_int pad of the digital
die.
7.4.14.2 Register Description
Table 138 CLOCK_OUT Register
Name
Base
Default
0x00
CLOCK_OUT
I2C audio master
Clock Output Register
This register is reset at a DVDD-POR.
Offset: 0x1D
Bit
Bit Name
Default
000
CLKOUT_mode<1:0> 00
Access
Bit Description
7..5
4:3
n/a
R/W
CLKOUT pin frequency divider
00: oscillator frequency direct mode
01: osc freq. divide by 2
10: osc freq. divide by 4
11: OFF
2:1
CLKOUT_drive<1:0>
00
0
R/W
R/W
CLKOUT pin driver strength adjustment
00: 4mA PushPull
01: 2mA PushPull
10: 1mA PushPull
11: 0.5mA PushPull
0
OSC_pd
0: 24MHz oscillator enabled
1: 24MHz oscillator in power down
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