IA8044_10 Datasheet, PDF (63/65 Pages) InnovASIC, Inc – SDLC Communications Controller

IA8044/IA8344
SDLC Communications Controller
Data Sheet
March 30, 2010
Errata No. 3
Problem: The device responds to an idle flag one bit time too early.
Description: This causes problems in a loop-mode network. It only occurs in loop mode when
using an external SIU clock source and idle flags.
Workaround: None.
Errata No. 4
Problem: Under certain conditions the SIU will overwrite the RCB register when starting a
transmission.
Description: The conditions are:
The SIU is externally clocked.
The SIU is in flexible mode.
The CPU has not already read the RCB from a previous reception before the
transmission takes place.
Workaround: Read the RCB before initiating a transmit.
®
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