IA8044_01 Datasheet, PDF (24/32 Pages) InnovASIC, Inc – SDLC COMMUNICATIONS CONTROLLER

IA8044/IA8344
SDLC COMMUNICATIONS CONTROLLER
Preliminary Data Sheet
As of Production Version 00
Diagnostics
A diagnostic mode is included with the IA8044/IA8344 to allow testing of the SIU. Diagnostics
use port pins P3.0 and P3.1. Writing a 0 to P3.1 enables the diagnostic mode. When P3.1 is
cleared writing data to P3.0 has the effect of writing a serial data stream to the SIU. P3.0 is the
serial data and any write to port 3 will clock SCLK. The transmit data may be monitored on P3.1
with any write to port 3 again clocking SCLK. In the test mode P3.0 and P3.1 pins are placed in
the high impedance state.
Diagnostic Signal Routing
Copyright © 2001
innovASIC
The End of Obsolescence™
ENG210010112-00
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