SH7080_09 Datasheet, PDF (751/1622 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH RISC engine Family

Section 13 Port Output Enable (POE)
Initial
Bit Bit Name value
12
POE4F
0
11 to 9 —
All 0
8
PIE2
0
7, 6 POE7M[1:0] 00
R/W Description
R/(W)*¹ POE4 Flag
This flag indicates that a high impedance request has
been input to the POE4 pin.
[Clearing conditions]
• By writing 0 to POE4F after reading POE4F = 1
(when the falling edge is selected by bits 1 and 0 in
ICSR2)
• By writing 0 to POE4F after reading POE4F = 1 after
a high level input to POE4 is sampled at Pφ/8, Pφ/16,
or Pφ/128 clock (when low-level sampling is selected
by bits 1 and 0 in ICSR2)
[Setting condition]
• When the input condition set by bits 1 and 0 in ICSR2
occurs at the POE4 pin
R
Reserved
These bits are always read as 0. The write value should
always be 0.
R/W Port Interrupt Enable 2
This bit enables/disables interrupt requests when any one
of the POE4F to POE7F bits of the ICSR2 is set to 1.
0: Interrupt requests disabled
1: Interrupt requests enabled
R/W*² POE7 mode 1 and 0
These bits select the input mode of the POE7 pin.
00: Accept request on falling edge of POE7 input
01: Accept request when POE7 input has been sampled
for 16 Pφ/8 clock pulses and all are at a low level.
10: Accept request when POE7 input has been sampled
for 16 Pφ/16 clock pulses and all are at a low level.
11: Accept request when POE7 input has been sampled
for 16 Pφ/128 clock pulses and all are at a low level.
Rev. 4.00 Dec. 15, 2009 Page 691 of 1558
REJ09B0181-0400