AD9548/PCBZ Analog Devices Inc, AD9548/PCBZ Datasheet - Page 78

• Manufacturer Part Number: AD9548/PCBZ
• Description: Clock Generator Evaluation Board
• Manufacturer: Analog Devices Inc

Specifications of AD9548/PCBZ

• Silicon Manufacturer: Analog Devices
• Application Sub Type: Network Clock Generator/Synchronizer
• Kit Application Type: Clock & Timing
• Silicon Core Number: AD9548
• Kit Contents: Board
• Main Purpose: Timing, Clock Generator
• Embedded: No
• Utilized Ic / Part: AD9548
• Primary Attributes: 62.5 ~ 450 MHz Output Frequency
• Secondary Attributes: SPI and I2C Compatible Control Port
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

AD9548
Table 67. Distribution Synchronization
Address
0402
Table 68. Automatic Synchronization
Address
0403
Table 69. Distribution Channel Modes
Address
0404
Bits
[7:6]
[5:4]
[3]
[2]
[1]
[0]
Bits
[7:2]
[1:0]
Bits
[7:6]
[5]
[4]
[3]
[2:0]
Bit Name
Unused
Sync source
OUT3 sync mask
OUT2 sync mask
OUT1 sync mask
OUT0 sync mask
Bit Name
Unused
Automatic sync mode
Bit Name
Unused
OUT0 CMOS phase
invert
OUT0 polarity invert
OUT0 drive strength
OUT0 mode
00 (default) = direct.
01 = active reference.
10 = DPLL feedback edge.
11 = reserved.
0 (default) = unmasked
1 = masked.
0 (default) = unmasked.
1 = masked.
0 (default) = unmasked.
1 = masked.
0 (default) = unmasked.
1 = masked.
Description
Select the sync source for the clock distribution output channels.
Mask the synchronous reset to the OUT3 divider.
Mask the synchronous reset to the OUT2 divider.
Mask the synchronous reset to the OUT1 divider.
Mask the synchronous reset to the OUT0 divider.
Description
When the output mode is CMOS, the bit inverts the relative phase between the two
CMOS output pins. Otherwise, this bit is nonfunctional.
0 (default) = not inverted.
1 = inverted.
Invert the polarity of OUT0.
0 (default) = not inverted.
1 = inverted.
OUT0 output drive capability control.
0 (default) = CMOS: low drive strength; LVDS: 3.5 mA nominal.
1 = CMOS: normal drive strength; LVDS: 7 mA nominal.
OUT0 operating mode select.
000 = CMOS (both pins)
001 = CMOS (positive pin), tristate (negative pin).
010 = tristate (positive pin), CMOS (negative pin).
011 (default) = tristate (both pins).
100 = LVDS.
101 = LVPECL.
110 = reserved.
111 = reserved.
Description
Autosync mode
00 (default) = disabled
01 = sync on DPLL frequency lock
10 = sync on DPLL phase lock
11 = reserved
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