CXA3506R Datasheet, PDF (51/110 Pages) Sony Corporation – 3-channel 8-bit 120MSPS A/D Converter Amplifier PLL

CXA3506R
• Delay time setting (Fine Delay/Coarse Delay)
The delay sync output, clock output, and 1/2 clock output can make delay time setting (Fine Delay/Coarse
Delay) for the input signal. The amount of delay time is from 3CLK Delay to 6CLK Delay for Coarse Delay
and from 1/32CLK to 64/32CLK for Fine Delay.
The delay time (Fine Delay/Coarse Delay) can be set by using the control registers shown below.
Register: FINE DELAY
Delay time
000000
1/32CLK
000001 · · · · · · · · · · 111111
2/32CLK · · · · · · · · · · 64/32CLK
Register: COARSE DELAY
Delay time
00
3CLK
01
4CLK
10
5CLK
11
6CLK
• DIVOUT signal output pulse width
The pulse width of the DIVOUT signal output can be set to 1, 2, 4, 8 clock pulse widths by using a control
register.
Register: DIVOUT WIDTH
DSYNC signal width
00
1CLK
01
2CLK
10
4CLK
11
8CLK
• DIVOUT signal output delay time setting
The DIVOUT signal is output with 4 or 5 clock delay based on the delay time (Fine Delay/ Coarse Delay)
set as described above.
The clock delay time can be set by using a control register.
Register: DIVOUT DELAY
Delay time
0
4CLK
1
5CLK
• Delay sync output polarity
The polarity of the delay sync signal output from the DSYNC/DIVOUT pin can be selected either negative or
positive by using a control register.
Register: DSYNC POL
Delay sync output polarity
0
Negative
1
Positive
• Delay sync output status
Although it is possible to turn off the signal output from the DSYNC/DIVOUT pin by using a control register,
it cannot be set to high impedance.
Register: DSYNC Enable
0
1
Delay sync output status
Off
On
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