AD9548SLASHPCBZ datasheet(79/112 Pages) AD

79 / 112 page

AD9548

Rev. 0 | Page 79 of 112

Address

Bits

Bit Name

Description

0405

[7:6]

Unused

[5]

OUT1 CMOS phase

invert

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.

[4]

OUT1 polarity invert

Invert the polarity of OUT1.

0 (default) = not inverted.

1 = inverted.

[3]

OUT1 drive strength

OUT1 output drive capability control.

0 (default) = CMOS: low drive strength; LVDS: 3.5 mA nominal.

1 = CMOS: normal drive strength; LVDS: 7 mA nominal.

[2:0]

OUT1 mode

OUT1 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.

0406

[7:6]

Unused

[5]

OUT2 CMOS phase

invert

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.

[4]

OUT2 polarity invert

Invert the polarity of OUT2.

0 (default) = not inverted.

1 = inverted.

[3]

OUT2 drive strength

OUT2 output drive capability control.

0 (default) = CMOS: low drive strength; LVDS: 3.5 mA nominal.

1 = CMOS: normal drive strength; LVDS: 7 mA nominal.

[2:0]

OUT2 mode

OUT2 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.

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