RX610 Group
14. I/O Ports
R01UH0032EJ0120 Rev.1.20
Page 430 of 1006
Feb 20, 2013
(7) PC6/A22/(RxD5)/CS6#-D
The pin function is switched as shown below according to the combination of the EXBE bit in SYSCR0, the rgister
setting for the bus controller, the port function control register m (PFCRm) setting, and the B6 bit in PC.DDR.
Module Name
Pin Function
Setting
Bus Controller
I/O Port
A22_OE
CS6#-D_OE
PC.DDR.B6
Bus controller
A22 output
*
1
CS6#-D output
*
0
1
I/O port
PC6 output
0
0
1
PC6 input (initial value) 0
0
0
Note:
*
Enabled in expansion mode with on-chip ROM disabled or disabled (SYSCR0.EXBE = 1).
(8) PC7/A23/TxD5/CS4#-D/CS7#-D
The pin function is switched as shown below according to the combination of the EXBE bit in SYSCR0, the rgister
setting for the bus controller, the port function control register m (PFCRm) setting, and the B7 bit in PC.DDR.
Module Name
Pin Function
Setting
Bus Controller
SCI
I/O Port
A23_OE
CS4#-D_OE
CS7#-D_OE
TxD5_OE
PC.DDR.B7
Bus controller
A23 output
*
1
CS4#-D output
*
0
1
CS7#-D output
*
0
0
1
SCI
TxD5 output
0
0
0
1
I/O port
PC7 output
0
0
0
0
1
PC7 input (initial value) 0
0
0
0
0
Note:
*
Enabled in expansion mode with on-chip ROM disabled or disabled (SYSCR0.EXBE = 1).