Datasheet

Section 14 IEBus™ Controller (IEB) [H8S/2258 Group]
Rev. 6.00 Mar. 18, 2010 Page 498 of 982
REJ09B0054-0600
• IEBus receive error flag register (IEREF)
14.3.1 IEBus Control Register (IECTR)
IECTR controls IEB operation (switches IEBus pin/port functions, selects input/output level, and
enables receive operation).
Bit Bit Name
Initial
Value
R/W Description
7 IEE 0 R/W IEB Pin Switch
Switches IEB pin and port functions.
0: The PG3/Rx/CS1 and PG2/Tx/CS2 pins function as the
PG3/CS1 and PG2/CS2 pins.
1: The PG3/Rx/CS1 and PG2/Tx/CS2 pins function as the
Tx and Rx pins.
6 IOL 0 R/W Input/Output Level
Selects input/output pin level (polarity) for the Rx and Tx
pins.
0: Pin input/output is set to active low. (Logic 1 is low level
and logic 0 is high level.)
1: Pin input/output is set to active high. (Logic 1 is high
level and logic 0 is low level.)