Renesas SH7641 - Manual (Page 875)

Section 22 Pin Function Controller (PFC)
Rev. 4.00 Sep. 14, 2005 Page 825 of 982
REJ09B0023-0400
Bit Bit Name
Initial
Value R/W
Description
7
6
PA3MD2
PA3MD1
0
0
R/W
R/W
5
4
PA2MD2
PA2MD1
0
0
R/W
R/W
3
2
PA1MD2
PA1MD1
0
0
R/W
R/W
1
0
PA0MD2
PA0MD1
0
0
R/W
R/W
PAn Mode 2 and 1
The combination of bits PAnMD2 and PAnMD1 (n = 0
to 14) controls the pin functions.
00: Port input
01: Port output
10: Reserved (When set, correct operation cannot be
guaranteed.)
11: Other functions (see table 22.1.)
Note: The initial function of the port A is port input after a power-on reset. When ROM with more
than 256 kbytes is allocated to space0, strong pull-downs must be prepared on the user
board to input 0 to the upper address bits of the ROM immediately after a power-on reset.