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H8S/2225 数据表(PDF) 584 Page - Renesas Technology Corp |
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H8S/2225 数据表(HTML) 584 Page - Renesas Technology Corp |
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584 / 1071 page ![]() Section 14 IEBus™ Controller (IEB) [H8S/2258 Group] Rev. 5.00 Aug 08, 2006 page 498 of 982 REJ09B0054-0500 • 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.) |
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