5 port e control register (pecr) – Renesas SH7641 User Manual
Page 880
Section 22 Pin Function Controller (PFC)
Rev. 4.00 Sep. 14, 2005 Page 830 of 982
REJ09B0023-0400
22.1.5
Port E Control Register (PECR)
PECR is a 32-bit readable/writable register that selects the pin functions. PECR is initialized to
H'00000000 by a power-on reset, and it is not initialized by a manual reset, in standby mode, or in
sleep mode.
Bit Bit
Name
Initial
Value R/W
Description
31
30
PE15MD2
PE15MD1
0
0
R/W
R/W
29
28
PE14MD2
PE14MD1
0
0
R/W
R/W
27
26
PE13MD2
PE13MD1
0
0
R/W
R/W
25
24
PE12MD2
PE12MD1
0
0
R/W
R/W
23
22
PE11MD2
PE11MD1
0
0
R/W
R/W
21
20
PE10MD2
PE10MD1
0
0
R/W
R/W
19
18
PE9MD2
PE9MD1
0
0
R/W
R/W
17
16
PE8MD2
PE8MD1
0
0
R/W
R/W
15
14
PE7MD2
PE7MD1
0
0
R/W
R/W
13
12
PE6MD2
PE6MD1
0
0
R/W
R/W
11
10
PE5MD2
PE5MD1
0
0
R/W
R/W
9
8
PE4MD2
PE4MD1
0
0
R/W
R/W
PEn Mode 2 and 1
The combination of bits PEnMD2 and PEnMD1 (n = 0
to 15) 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.)
When 11 (other functions) is set, the port E I/O register
(PEIOR) controls input or output. For details, see
section 22.1.6, Port E I/O Register (PEIOR).