RX610 Group
14. I/O Ports
R01UH0032EJ0120 Rev.1.20
Page 415 of 1006
Feb 20, 2013
14.3.8
Port 7 (P7)
(1) P70/CS3#-B/(ADTRG2#)
The pin function is switched as shown below according to the combination of the external bus enable bit (EXBE) in the
system control register 0 (SYSCR0), the rgister setting for the bus controller, the port function control register m
(PFCRm) setting, and the B0 bit in P7.DDR.
Module Name
Pin Function
Setting
Bus Controller
I/O Port
CS3#-B_OE
P7.DDR.B0
Bus controller
CS3#-B output
*
1
I/O port
P70 output
0
1
P70 input (initial value)
0
0
Note:
*
Enabled in expansion mode with on-chip ROM disabled or disabled (SYSCR0.EXBE = 1).
(2) P71/CS4#-C/CS5#-C/CS6#-C/CS7#-C
The pin function is switched as shown below according to the combination of the EXBE bit in SYSCR0, the register
setting for the bus controller, the port function control register m (PFCRm) setting, and the B1 bit in P7.DDR.
Module Name
Pin Function
Setting
Bus Controller
I/O Port
CS4#-C_OE CS5#-C_OE CS6#-C_OE CS7#-C_OE P7.DDR.B1
Bus controller
CS4#-C output
*
1
CS5#-C output
*
1
CS6#-C output
*
1
CS7#-C output
*
1
I/O port
P71 output
0
0
0
0
1
P71 input (initial value)
0
0
0
0
0
Note:
*
Enabled in expansion mode with on-chip ROM disabled or disabled (SYSCR0.EXBE = 1).
(3) P72
The pin function is switched as shown below according to the value of the B2 bit in P7.DDR.
Module Name
Pin Function
Setting
I/O Port
P7.DDR.B2
I/O port
P72 output
1
P72 input (initial value)
0