SH7211 Datasheet, PDF (648/1228 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
1, 0 POE8M[1:0] 00
R/W*²
POE8 Mode
These bits select the input mode of the POE8 pin.
00: Accept request on falling edge of POE8 input
01: Accept request when POE8 input has been sampled
for 16 Pφ/8 clock pulses and all are low level.
10: Accept request when POE8 input has been sampled
for 16 Pφ/16 clock pulses and all are low level.
11: Accept request when POE8 input has been sampled
for 16 Pφ/128 clock pulses and all are 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.
12.3.6 Software Port Output Enable Register (SPOER)
SPOER is an 8-bit readable/writable register that controls high-impedance state of the pins.
Bit: 7
6
5
4
3
2
1
0
-
-
-
-
-
MTU2S MTU2 MTU2
HIZ CH0HIZ CH34HIZ
Initial value: 0
0
0
0
0
0
0
0
R/W: R
R
R
R
R R/W R/W R/W
Bit Bit Name
7 to 3 —
Initial
Value R/W Description
All 0
R
Reserved
These bits are always read as 0. The write value
should always be 0.
Rev. 2.00 May. 08, 2008 Page 624 of 1200
REJ09B0344-0200