NXP Semiconductors freescale semiconductor ColdFire MCF51CN128 Series, Reference Manual

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Rapid GPIO (RGPIO)
Freescale Semiconductor 10-7
MCF51CN128 Reference Manual, Rev. 6
Setting it has no effect. The RGPIO_CLR register is write-only; reads of this address return the
RGPIO_DATA register.
Figure 10-5. RGPIO Clear Data Register (RGPIO_CLR)
10.3.5 RGPIO Set Data (RGPIO_SET)
The RGPIO_SET register provides a mechanism to set specific bits in the RGPIO_DATA register by
performing a simple write. Setting a bit in RGPIO_SET asserts the corresponding bit in the RGPIO_DATA
register. Clearing it has no effect. The RGPIO_SET register is write-only; reads of this address return the
RGPIO_DATA register.
Figure 10-6. RGPIO Set Data Register (RGPIO_SET)
10.3.6 RGPIO Toggle Data (RGPIO_TOG)
The RGPIO_TOG register provides a mechanism to invert (toggle) specific bits in the RGPIO_DATA
register by performing a simple write. Setting a bit in RGPIO_TOG inverts the corresponding bit in the
RGPIO_DATA register. Clearing it has no effect. The RGPIO_TOG register is write-only; reads of this
address return the RGPIO_DATA register.
Offset: RGPI 0x6 (RGPIO_CLR) Access: Write-only
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
R
W CLR
Reset — — — — — — — — — — — — — — — —
Table 10-8. RGPIO_CLR Field Descriptions
Field Description
15–0
CLR
Clear data bit
0 Clears the corresponding bit in the RGPIO_DATA register
1 No effect
Offset: RGPI 0xA (RGPIO_SET) Access: Write-only
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
R
W SET
Reset — — — — — — — — — — — — — — — —
Table 10-9. RGPIO_SET Field Descriptions
Field Description
15–0
SET
Set data bit
0 No effect
1 Sets the corresponding bit in the RGPIO_DATA register