AD9522-4 Analog Devices, Inc., AD9522-4 Datasheet - Page 77

• Manufacturer Part Number: AD9522-4
• Description: 12 Lvds/24 Cmos Output Clock Generator With Integrated 1.6 Ghz Vco
• Manufacturer: Analog Devices, Inc.

Reg.
Addr
(Hex) Bit(s) Name
198
198
199
199
19A
19A
19A
19A
19A
19B
19B
Reg.
Addr
(Hex) Bit(s) Name
1E0
1E1
Table 55. VCO Divider and CLK Input
[2:0]
[4]
[2]
[0]
[7:4]
[3:0]
[7]
[6]
[5]
[4]
[3:0]
[2]
[0]
VCO divider
Power-down clock input section Powers down the clock input section (including CLK buffer, VCO divider, and CLK tree).
Channel 2 power-down
Disable Divider 2 DCC
Divider 3 low cycles
Divider 3 high cycles
Divider 3 bypass
Divider 3 ignore SYNC
Divider 3 force high
Divider 3 start high
Divider 3 phase offset
Channel 3 power-down
Disable Divider 3 DCC
Description
Channel 2 powers down.
[2] = 0; normal operation (default).
[2] = 1; powered down. (OUT6/OUT6, OUT7/OUT7, and OUT8/OUT8 are put into the high
impedance power-down mode by setting this bit.)
Duty-cycle correction function.
[0] = 0; enable duty-cycle correction (default).
[0] = 1; disable duty-cycle correction.
Number of clock cycles (minus 1) of the divider input during which the divider output stays
low. A value of 0x0 means the divider is low for one input clock cycle (default: 0x0).
Number of clock cycles (minus 1) of the divider input during which the divider output stays
high. A value of 0x0 means the divider is high for one input clock cycle (default: 0x0).
Bypasses and powers down the divider; routes input to divider output.
[7] = 0; use divider (default).
[7] = 1; bypass divider.
Ignore SYNC.
[6] = 0; obey chip-level SYNC signal (default).
[6] = 1; ignore chip-level SYNC signal.
Forces divider output to high. This requires that ignore SYNC also be set.
[5] = 0; divider output forced to low (default).
[5] = 1; divider output forced to high.
Selects clock output to start high or start low.
[4] = 0; start low (default).
[4] = 1; start high.
Phase offset (default: 0x0).
Channel 3 powers down.
[2] = 0; normal operation (default).
[2] = 1; powered down. (OUT9/OUT9, OUT10/OUT10, and OUT11/OUT11 are put into the high
impedance power-down mode by setting this bit.)
Duty-cycle correction function.
[0] = 0; enable duty-cycle correction (default).
[0] = 1; disable duty-cycle correction.
Description
[2]
0
0
0
0
1
1
1
1
[4] = 0; normal operation (default).
[4] = 1; power down.
Rev. 0 | Page 77 of 84
[1]
0
0
1
1
0
0
1
1
[0]
0
1
0
1
0
1
0
1
Divide
2 (default)
3
4
5
6
Output static
1 (bypass)
Output static
AD9522-4