Rev. 3.0, 03/01, page 389 of 390
When the HD64465 sets the CLOCK line low before the falling edge of the tenth clock it
indicates that a complete byte has been received. The mouse sees this as a host request to
abort the byte being transmitted. When the host allows the CLOCK line to go high the
mouse will send the aborted byte again. This resent byte causes the driver to loose message
stream synchronization.
The loss synchronization does not occur with old versions of the Microsoft mouse.
Work around:
There does not appear to be a software work around for this problem. The pull up resistor
value of 10K ohms may be too large. Use a lower value between 2.2K and 4.7K.
Summary of Contents for HD64465
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