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Section 8 I/O Ports
8.3
Port Function Controller
The port function controller controls the I/O ports.
The port function controller incorporates the following registers.
• Port function control register 0 (PFCR0)
• Port function control register 1 (PFCR1)
• Port function control register 2 (PFCR2)
• Port function control register 4 (PFCR4)
• Port function control register 6 (PFCR6)
• Port function control register 9 (PFCR9)
• Port function control register B (PFCRB)
• Port function control register C (PFCRC)
8.3.1
Port Function Control Register 0 (PFCR0)
PFCR0 enables/disables the CS output.
Bit
7
Bit Name
CS7E
Initial Value
0
R/W
R/W
Bit
Bit Name
7
CS7E
6
CS6E
5
CS5E
4
CS4E
3
CS3E
2
CS2E
1
CS1E
0
CS0E
Rev.2.00 Jun. 28, 2007 Page 292 of 666
REJ09B0311-0200
6
5
CS6E
CS5E
0
0
R/W
R/W
Initial
Value
R/W
0
R/W
0
R/W
0
R/W
0
R/W
0
R/W
0
R/W
0
R/W
1
R/W
4
3
CS4E
CS3E
0
0
R/W
R/W
Description
CS7 to CS0 Enable
These bits enable/disable the corresponding CSn
output.
0: Pin functions as I/O port
1: Pin functions as CSn output pin
(n = 7 to 0)
2
1
CS2E
CS1E
0
0
R/W
R/W
0
CS0E
1
R/W
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