ur7hcpxz-p440 Semtech Corporation, ur7hcpxz-p440 Datasheet - Page 4

• Manufacturer Part Number: ur7hcpxz-p440
• Description: Advanced Click-to-select No-drifttm Ps/2 Force Stick Controller
• Manufacturer: Semtech Corporation

The PixiPoint
double-click, MouseWheel action
and slow drag without the need for
special drivers. A standard PS/2
mouse driver can be utilized.
Copyright Semtech 2000-2001
DOC7-PXZ-P440-DS-111
BUILT-IN FEATURES
TM
Z enables click,
The UR7HCPXZ-P440 offers an external PS/2 mouse port. Data from this
port is seamlessly merged with data from the internal pointing device.
External devices, including those utilizing a MouseWheel, can be hot-plug
connected.
For every correct command or parameter received from the host, the
UR7HCPXZ-P440 sends an Acknowledge (FAh). If an invalid command or
parameter is received, the UR7HCPXZ-P440 issues a Resend Request
(FEh). If an invalid input is again received, the device transmits an Error
Code (FCh) to the host. Both error and Resend request responses are sent
by the device within 25 milliseconds. The host may not issue any new
commands until either the PixiPoint
milliseconds have elapsed.
At start-up or upon receiving a reset command, the PixiPoint
between 300 and 500 milliseconds before sending an AAh to the host
followed by a device ID of 00h. Then the IC will set itself to its default
values, i.e. Incremental Stream Mode with 1:1 scaling, and a report rate
of 100 Hz. The device will then disable itself until a command is sent from
the host. PixiPoint
elapsed.
PS/2 COMMUNICATION
EXTERNAL PS/2 PORT
4
ERROR HANDLING
TM
Z has responded or until 25 milliseconds have
TM
Z has responded or until 25
www.semtech.com
TM
Z will wait