ad1939xstzrl Analog Devices, Inc., ad1939xstzrl Datasheet - Page 24

• Manufacturer Part Number: ad1939xstzrl
• Description: 4 Adc/8 Dac With Pll, 192 Khz, 24 Bit Codec
• Manufacturer: Analog Devices, Inc.

PLL AND CLOCK CONTROL REGISTERS
PLL and Clock control 0
PLL and Clock control 1
AD1935/AD1936/AD1937/AD1938/AD1939
Bit
0
2:1
4:3
6:5
7
Bit
0
1
2
3
7:4
Value
0
1
00
01
10
11
00
01
10
11
00
01
10
11
0
1
Value
0
1
0
1
0
1
0
1
0000
Function
Normal operation
Power down
INPUT 256 (x 44.1 or 48kHz)
INPUT 384 (x 44.1 or 48kHz)
INPUT 512 (x 44.1 or 48kHz)
INPUT 768 (x 44.1 or 48kHz)
XTAL Oscillator Enabled
256xfs VCO Output
512xfs VCO Output
Off
MCLK
DLRCLK
ALRCLK
Reserved
Disable: ADC and DAC Idle
Enable: ADC and DAC Active
Function
PLL Clock
MCLK
PLL Clock
MCLK
Enabled
Disabled
Not Locked
Locked
Reserved
Rev. PrI | Page 24 of 30
Table 18
Table 19
Description
PLL power down
MCLK pin functionality (PLL active)
MCLK_O pin
PLL input
Internal MCLK Enable
Description
DAC Clock Source Select
ADC Clock Source Select
On-chip Voltage Reference
PLL Lock Indicator (Read Only)
Preliminary Technical Data