SH7080 Datasheet, PDF (1115/1644 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperH™ RISC engine Family

Section 21 Pin Function Controller (PFC)
Initial
Bit
Bit Name Value R/W Description
1
PA20MD1 0
R/W PA20 Mode
0
PA20MD0 0
R/W Select the function of the PA20/CS4/RASU pin.
00: PA20 I/O (port)
01: CS4 output (BSC)*²
10: RASU output (BSC)*²
Other than above: Setting prohibited
Notes: 1. The initial value is 1 in the on-chip ROM disabled 32-bit external-extension mode.
2. This function is enabled only in the on-chip ROM enabled/disabled external-extension
mode. Do not set 1 in single-chip mode.
• Port A Control Register H1 (PACRH1)
Bit: 15
-
Initial value: 0
R/W: R
14 13 12 11
-
PA19 PA19
MD1 MD0
-
0
0
0
0
R R/W R/W R
10 9
8
7
-
PA18 PA18
MD1 MD0
-
0
0
0
0
R R/W R/W R
6
5
4
3
2
1
0
-
PA17 PA17
MD1 MD0
-
PA16 PA16 PA16
MD2 MD1 MD0
0
0
0
0
0
0
0
R R/W R/W R R/W R/W R/W
Initial
Bit
Bit Name Value R/W Description
15, 14 
All 0
R
Reserved
These bits are always read as 0. The write value
should always be 0.
13
PA19MD1 0
12
PA19MD0 0
R/W PA19 Mode
R/W Select the function of the PA19/BACK/TEND1 pin.
00: PA19 I/O (port)
01: BACK output (BSC)*
10: TEND1 output (DMAC)*
Other than above: Setting prohibited
11, 10 
All 0
R
Reserved
These bits are always read as 0. The write value
should always be 0.
Rev. 3.00 May 17, 2007 Page 1057 of 1582
REJ09B0181-0300