User`s guide
22 • Registers 
T2_EN (R/W)  
0: Disable Timer2 interrupt 
1: Interrupt CPU on falling edge of Timer 2 output 
AUXDI0_INT (R/W)  
0: AUXDI does not generate interrupt 
1: AUXDI interrupt occurred. Write “1” to clear 
T2_INT (R/W)  
0: Timer 2 does not generate interrupt 
1: Timer 2 interrupt occurred. Write “1” to clear 
3.6 DI_FIFO: DI FIFO direct access port  
The digital input FIFO data can be accessed through this port directly.  
Address: BASE + 0x10 
Attribute: READ/WRITE 
Data Format: 
Bits  7  6  5  4  3  2  1  0 
Bit # 7~0  DI_FIFO_8 
Bit # 15~8  DI_FIFO_16 
Bit # 31_16  DI_FIFO_32 
DI_FIFO_8  
Bit 7 ~ Bit 0 of digital input FIFO 
DI_FIFO_16 
Bit 15 ~ Bit 8 of digital input FIFO if the digital input is configured as 16-bit wide 
or 32-bit wide. 
DI_FIFO_32  
Bit 31 ~ Bit 16 of digital input FIFO if the digital input is  
configured as 32-bit wide 
Note: Although this port is R/W port, write operation should be avoided in 
normal operation. If both PORT A and PORT B are configured as 
output ports, read/write to this port is meaningless.  










