ADAU1966 AD [Analog Devices], ADAU1966 Datasheet - Page 25

• Manufacturer Part Number: ADAU1966
• Description: 16-Channel High Performance
• Manufacturer: AD [Analog Devices]

PLL AND CLOCK CONTROL 1 REGISTER
Address: 0x01, Reset: 0x2A, Name: PLL_CLK_CTRL1
Table 26. Bit Descriptions for PLL_CLK_CTRL1
Bits
[7:6]
[5:4]
3
2
1
0
Bit Name
LOPWR_MODE
MCLKO_SEL
PLL_MUTE
PLL_LOCK
VREF_EN
CLK_SEL
[7:6] LOPWR_MODE
Global Power/Performance Adjust
[5:4] MCLKO_SEL
MCLK Output Frequency
00: I
01: Reserved
10: Lower Power
11: Lowest Power
00: MCLKO = 4 MHz to 6 MHz scaled by f
01: MCLKO = 8 MHz to 12 MHz scaled by f
10: MCLKO = Buffered MCLKI
11: MCLKO Pin Disabled
2
C Register Settings
Settings
00
01
10
11
00
01
10
11
0
1
0
1
0
1
0
1
Description
Global Power/Performance Adjust. These bits adjust the power
consumption and performance level for all 16 DAC channels at once. See
the Digital-to-Analog Converters (DACs) section for more details.
I
Reserved
Low Power
Lowest Power
MCLK Output Frequency. Frequency selection for MCLKO pin. See the
Clock Signals section for more details.
MCLKO = 4 MHz to 6 MHz scaled by f
MCLKO = 8 MHz to 12 MHz scaled by f
MCLKO = Buffered MCLKI
MCLKO Pin Disabled
PLL Automute Enable/Lock. This bit enables the PLL lock automute
function.
No DAC Automute
DAC Automute on PLL Unlock
PLL Lock Indicator.
PLL Not Locked
PLL Locked
Internal Voltage Reference Enable. The internal voltage reference powers
the common mode for the ADAU1966. Disabling this bit allows the user to
drive the CM pin with an outside voltage source.
Disabled
Enabled
DAC Clock Select. Selects between PLL or Direct MCLK mode.
MCLK from PLL
MCLK from MCLKI or XTALI
2
C Register Settings
s
s
B7
0
B6
0
B5
1
Rev. 0 | Page 25 of 52
B4
0
B3
1
B2
0
B1
1
S
S
B0
0
[0] CLK_SEL
DAC Clock Select
[1] VREF_EN
Internal Voltage Reference Enable
[2] PLL_LOCK
PLL Lock Indicator
[3] PLL_MUTE
PLL Automute Enable/Lock
0: MCLK from PLL
1: MCLK from MCLKI or XTALI
0: Disabled
1: Enabled
0: PLL Not Locked
1: PLL Locked
0: No DAC Automute
1: DAC Automute on PLL Unlock
Reset
0x0
0x2
0x1
0x0
0x1
0x0
ADAU1966
Access
RW
RW
RW
R
RW
RW