R01UH0823EJ0100 Rev.1.00
Page 643 of 1823
Jul 31, 2019
RX23W Group
24. Port Output Enable 2 (POE2a)
24.2
Register Descriptions
24.2.1
Input Level Control/Status Register 1 (ICSR1)
Note 1. Can be modified only once after a reset.
Note 2. Writing 0 to this bit after reading it as 1 clears the flag and is the only allowed way.
Address(es): 0008 8900h
b15
b14
b13
b12
b11
b10
b9
b8
b7
b6
b5
b4
b3
b2
b1
b0
POE3F
—
POE1F POE0F
—
—
—
PIE1
POE3M[1:0]
—
—
POE1M[1:0]
POE0M[1:0]
Value after reset:
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Bit
Symbol
Bit Name
Description
R/W
b1, b0
POE0 Mode
Select
b1 b0
0 0: Accepts a high-impedance request on the falling edge of the POE0# pin
input.
0 1: Accepts a high-impedance request when the POE0# pin input has been
sampled 16 times at PCLK/8 clock cycles and all are low level.
1 0: Accepts a high-impedance request when POE0# input has been sampled 16
times at PCLK/16 clock pulses and all are low level.
1 1: Accepts a high-impedance request when POE0# input has been sampled 16
times at PCLK/128 clock pulses and all are low level.
b3, b2
POE1 Mode
Select
b3 b2
0 0: Accepts a high-impedance request on the falling edge of the POE1# pin
input.
0 1: Accepts a high-impedance request when the POE1# pin input has been
sampled 16 times at PCLK/8 clock cycles and all are low level.
1 0: Accepts a high-impedance request when POE1# input has been sampled 16
times at PCLK/16 clock pulses and all are low level.
1 1: Accepts a high-impedance request when POE1# input has been sampled 16
times at PCLK/128 clock pulses and all are low level.
b5, b4
—
Reserved
These bits are read as 0. The write value should be 0.
R/W
b7, b6
POE3 Mode
Select
b7 b6
0 0: Accepts a high-impedance request on the falling edge of the POE3# pin
input.
0 1: Accepts a high-impedance request when the POE3# pin input has been
sampled 16 times at PCLK/8 clock cycles and all are low level.
1 0: Accepts a high-impedance request when POE3# input has been sampled 16
times at PCLK/16 clock pulses and all are low level.
1 1: Accepts a high-impedance request when POE3# input has been sampled 16
times at PCLK/128 clock pulses and all are low level.
b8
Port Interrupt
Enable 1
0: OEI1 interrupt requests by the input level detection disabled
1: OEI1 interrupt requests by the input level detection enabled
R/W
b11 to b9
—
Reserved
These bits are read as 0. The write value should be 0.
R/W
b12
POE0 Flag
0: Indicates that a high-impedance request has not been input to the POE0# pin.
1: Indicates that a high-impedance request has been input to the POE0# pin.
R/(W)
*
b13
POE1 Flag
0: Indicates that a high-impedance request has not been input to the POE1# pin.
1: Indicates that a high-impedance request has been input to the POE1# pin.
R/(W)
*
b14
—
Reserved
This bit is read as 0. The write value should be 0.
R/W
b15
POE3 Flag
0: Indicates that a high-impedance request has not been input to the POE3# pin.
1: Indicates that a high-impedance request has been input to the POE3# pin.
R/(W)
*