RX610 Group
14. I/O Ports
R01UH0032EJ0120 Rev.1.20
Page 425 of 1006
Feb 20, 2013
14.3.12
Port B (PB)
(1) PB0/A8/PO24/TIOCA9
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 settings for the PPG and TPU, the port function control register m
(PFCRm) setting, and the B0 bit in PB.DDR.
Module Name
Pin Function
Setting
Bus Controller
TPU
PPG
I/O Port
A8_OE
TIOCA9_OE
PO24_OE
PB.DDR.B0
Bus controller
Address output
*
1
TPU
TIOCA9 output
0
1
PPG
PO24 output
0
0
1
I/O port
PB0 output
*
0
0
0
1
PB0 input (initial value) 0
0
0
0
Note:
*
Enabled in expansion mode with on-chip ROM disabled or disabled (SYSCR0.EXBE = 1).
(2) PB1/A9/PO25/(TIOCA9)/TIOCB9
The pin function is switched as shown below according to the combination of the EXBE bit in SYSCR0, the rgister
settings for the PPG and TPU, the port function control register m (PFCRm) setting, and the B1 bit in PB.DDR.
Module Name
Pin Function
Setting
Bus Controller
TPU
PPG
I/O Port
A9_OE
TIOCB9_OE
PO25_OE
PB.DDR.B1
Bus controller
Address output
*
1
TPU
TIOCB9 output
0
1
PPG
PO25 output
0
0
1
I/O port
PB1 output
*
0
0
0
1
PB1 input (initial value) 0
0
0
0
Note:
*
Enabled in expansion mode with on-chip ROM disabled or disabled (SYSCR0.EXBE = 1).
Summary of Contents for RX600 Series
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