Datasheet

AD9516-3 Data Sheet
Rev. C | Page 68 of 80
Reg.
Addr.
(Hex) Bits Name Description
0x0A9 0 OUT9 delay bypass Bypasses or uses the delay function.
0: uses delay function.
1: bypasses delay function (default).
0x0AA
[5:3]
OUT9 ramp capacitors
Selects the number of ramp capacitors used by the delay function. The combination of the
number of capacitors and the ramp current sets the delay full scale.
5 4 3 Number of Capacitors
0 0 0 4 (default)
0 0 1 3
0 1 0 3
0 1 1 2
1 0 0 3
1 0 1 2
1 1 0 2
1 1 1 1
[2:0] OUT9 ramp current Ramp current for the delay function. The combination of the number of capacitors and the ramp
current sets the delay full scale.
2 1 0 Current Value (µA)
0 0 0 200 (default)
0 0 1 400
0 1 0 600
0 1 1 800
1 0 0 1000
1 0 1 1200
1 1 0 1400
1 1 1 1600
0x0AB [5:0] OUT9 delay fraction Selects the fraction of the full-scale delay desired (6-bit binary).
A setting of 000000 gives zero delay.
Only delay values up to 47 decimals (101111b; 0x2F) are supported (default = 0x00).
Table 56. LVPECL Outputs
Reg.
Addr.
(Hex)
Bits Name Description
0x0F0 4 OUT0 invert Sets the output polarity.
0: noninverting (default).
1: inverting.
[3:2] OUT0 LVPECL Sets the LVPECL output differential voltage (V
OD
).
differential voltage
3 2 V
OD
(mV)
0 0 400
0 1 600
1 0 780 (default)
1 1 960
[1:0] OUT0 power-down LVPECL power-down modes.
1 0 Mode Output
0 0 Normal operation (default). On
0 1 Partial power-down, reference on; use only if there are no external
load resistors.
Off
1 0 Partial power-down, reference on, safe LVPECL power-down. Off
1 1 Total power-down, reference off; use only if there are no external
load resistors.
Off