Quadrature Output Mode Waveform
@ 24 MHz
The 2 channel quadrature outputs
are 5 V CMOS outputs. The Delta
X count is used to generate the
XA and XB quadrature signals.
The Delta Y count is used to gen-
erate the YA and YB quadrature
signals. Delta X, Y counts are in
the range of +7 to –7 counts of
motion and new Delta X, Y values
are generated at a rate of 2000
Hz. The quadrature signals can
change at a maximum rate of
16.7 kHz.
XB
XA
60 µs
60 µs
60 µs
60 µs
60 µs
60 µs
Example: Quadrature Output Waveform (+X motion).
AC Electrical Specifications
Electrical Characteristics over recommended operating conditions. Typical values at 25˚C, V
A = 2.4 mm, CLK = 24.00 MHz.
= 3.3, V
= 5.0,
DD5
DD3
Parameter
Symbol
Fps2
T2
Min.
13.3
7.5
Typ.
16.7
15
Max.
20
Units
Kbaud
µs
Notes
PS/2 Baud Rate
PS/2 Data Transition Delay
after PS/2_C Rising Edge
18.8
See PS/2 timing diagrams
See PS/2 command settings
PS/2 Motion Report Rates
Motion Scale Factor
Power Up Delay
133
400
reports/sec
counts/inch
ms
100
C
= 0.22 µF
RESET
10
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