R01UH0822EJ0100 Rev.1.00
Page 532 of 1041
Jul 31, 2019
RX13T Group
20. Port Output Enable 3 (POE3C)
For details, refer to
section 20.3.7, Recover from High-Impedance State
.
20.2.3
Input Level Control/Status Register 4 (ICSR4)
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.
The ICSR4 register selects the POE10# pin input mode, controls the enable/disable of interrupts, and indicates status.
POE10M[1:0] Bits (POE10 Mode Select)
These bits select the input mode of the POE10# pin.
PIE4 Bit (Port Interrupt Enable 4)
This bit enables or disables interrupt requests when the POE10F flag is set to 1.
POE10E Bit (POE10 High-Impedance Enable)
This bit specifies whether to put the output of the corresponding pin in the high-impedance state when the POE10F flag
is set to 1.
POE10F Flag (POE10 Flag)
This flag indicates that a high-impedance request has been input to the POE10# pin.
[Setting condition]
When the input set by the POE10M[1:0] bits occurs at the POE10# pin
Address(es): POE.ICSR4 0008 C4D6h
b15
b14
b13
b12
b11
b10
b9
b8
b7
b6
b5
b4
b3
b2
b1
b0
—
—
—
POE10
F
—
—
POE10
E
PIE4
—
—
—
—
—
—
POE10M[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
POE10M[1:0] POE10 Mode Select
b1 b0
0 0: Accepts a request on the falling edge of POE10# pin input.
0 1: Accepts a request when POE10# pin input has been sampled
16 times at PCLK/8 clock pulses and all are low level.
1 0: Accepts a request when POE10# pin input has been sampled
16 times at PCLK/16 clock pulses and all are low level.
1 1: Accepts a request when POE10# pin input has been sampled
16 times at PCLK/128 clock pulses and all are low level.
b7 to b2
—
Reserved
These bits are read as 0. The write value should be 0.
R/W
b8
Port Interrupt Enable 4
0: Interrupt requests disabled
1: Interrupt requests enabled
R/W
b9
POE10 High-Impedance
Enable
0: Does not put the output in the high-impedance state by POE10#
signal.
1: Put the output in the high-impedance state by POE10# signal.
b11, b10
—
Reserved
These bits are read as 0. The write value should be 0.
R/W
b12
POE10 Flag
0: Indicates that a high-impedance request has not been input to
the POE10# pin.
1: Indicates that a high-impedance request has been input to the
POE10# pin.
R/(W)
*
b15 to b13 —
Reserved
These bits are read as 0. The write value should be 0.
R/W