Analog Devices AD9361 User Manual

UG-570 AD9361 Reference Manual
| Page 24 of 128
Table 12. Tx Fast Lock Internal Addressing
Program Address[7:4] Assignment Program Address[3:0] Assignment (written to 0x25D) Location of Setup Words
0 profile0 0 Synthesizer Integer Word[7:0] 0x271[D7:D0]
1 profile1 1 Synthesizer Integer Word[10:8] 0x272[D2:D0]
2 profile2 2 Synthesizer Fractional Word[7:0] 0x273[D7:D0]
3 profile3 3 Synthesizer Fractional Word[15:8] 0x274[D7:D0]
4 profile4 4 Synthesizer Fractional Word[22:16] 0x275[D6:D0]
5 profile5 5 VCO Bias Ref[2:0] shift left by 4
+
VCO Varactor[3:0]
0x282[D2:D0]
0x279[D3:D0]
6 profile6 6 VCO Bias Tcf[1:0] shift left by 6
+
Charge Pump Current (Init)[5:0]
0x282[D4:D3]
Set per Init N calculation
7 profile7 7 Charge Pump Current[5:0] 0x27B[D5:D0]
8 Not used 8 Loop Filter R3[3:0] shift left by 4
+
Loop Filter R3 (Init)[3:0]
0x280[D3:D0]
Set per Init N calculation
9
Not used
9
Loop Filter C3[3:0] shift left by 4
+
Loop Filter C3 (Init)[3:0]
0x27F[D3:D0]
Set per Init N calculation
A Not used A Loop Filter C1[3:0] shift left by 4
+
Loop Filter C2[3:0] shift right by 4
0x27E[D3:D0]
0x27E[D7:D4])
B Not used B Loop Filter R1[3:0]
+
Loop Filter R1 (Init)[3:0]
0x27F[D7:D4]
Set per Init N calculation
C Not used C VCO Varactor Reference Tcf[2:0]
+
Rx VCO Divider[3:0]
0x290[D6:D4]
0x005[D7:D4]
D Not used D VCO Cal Offset[3:0] shift left by 1
+
VCO Varactor Reference[3:0]
0x278[D6:D3]
0x291[D3:D0]
E Not used E Force VCO Tune[7:0] 0x277[D7:D0]
F Not used F Force ALC word[6:0] shift left by 1
+
Force VCO Tune[8]
0x276[D6:D0]
0x278[D0]
FAST LOCK PIN SELECT
The previous example demonstrated how to setup profiles and select a profile using SPI commands. It is also possible to use hardware
control to select a particular profile if desired. The control input pins in this mode are used to select the desired profile. This mode is
enabled by setting Bit D1, Fast Lock Profile Pin Select in Rx Register 0x25A and/or Tx Register 0x29A along with enabling fast lock mode
in the same registers. When this is set, CTRL_IN0 through CTRL_IN2 select the profile (if both pin select bits are set, profiles are selected
in parallel). In the system design, it should be noted that CTRL_IN pins are configurable for other functions as well so they are not
available for other functions simultaneously.
Rev. A

Analog Devices AD9361 Specifications

General

Brand	Analog Devices
Model	AD9361
Category	Motherboard
Language	English