SH7211 Datasheet, PDF (644/1228 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperHTM RISC engine Family

Section 12 Port Output Enable 2 (POE2)
Initial
Bit Bit Name Value R/W Description
5 to 2 ⎯
All 0 R
Reserved
These bits are always read as 0. The write value should
always be 0.
1, 0 POE4M[1:0] 00
R/W*²
POE4 Mode
These bits select the input mode of the POE4 pin.
00: Accept request on falling edge of POE4 input
01: Accept request when POE4 input has been sampled
for 16 Pφ/8 clock pulses and all are at a low level.
10: Accept request when POE4 input has been sampled
for 16 Pφ/16 clock pulses and all are at a low level.
11: Accept request when POE4 input has been sampled
for 16 Pφ/128 clock pulses and all are at a low level.
Notes: 1. Only 0 can be written to clear the flag after 1 is read.
2. Can be modified only once after a power-on reset.
Rev. 2.00 May. 08, 2008 Page 620 of 1200
REJ09B0344-0200