C2K User’s Guide
5-14
Resources
SMI Mask Register
The SMI Mask Register provides masking for signals that are capable of triggering the CPU
SMI# input to the processor.
7
IPMC_INT_STAT
-
IPMC Interrupt Status—indicates the status of the IPMC
interrupt.
0 = interrupt is de-asserted
1 = interrupt is asserted
6
8051_UART_INT_STAT
-
8051 UART Interrupt Status—indicates the status of the
8051 UART interrupt.
0 = interrupt is de-asserted
1 = interrupt is asserted
5
USART_INT5_STAT
-
USART INT5 Status—indicates the status of the USART
Port 5 interrupt.
0 = interrupt is de-asserted
1 = interrupt is asserted
4
USART_INT4_STAT
-
USART INT4 Status—indicates the status of the USART
Port 4 interrupt.
0 = interrupt is de-asserted
1 = interrupt is asserted
3
USART_INT3_STAT
-
USART INT3 Status—indicates the status of the USART
Port 3 interrupt.
0 = interrupt is de-asserted
1 = interrupt is asserted
2
USART_INT2_STAT
-
USART INT2 Status—indicates the status of the USART
Port 2 interrupt.
0 = interrupt is de-asserted
1 = interrupt is asserted
1
USART_INT1_STAT
-
USART INT1 Status—indicates the status of the USART
Port 1 interrupt.
0 = interrupt is de-asserted
1 = interrupt is asserted
0
USART_INT0_STAT
-
USART INT0 Status—indicates the status of the USART
Port 0 interrupt.
0 = interrupt is de-asserted
1 = interrupt is asserted
Address offset:
0x28
Access:
Read/write
Bits
Field
Default
Description
15 to 4
Not used
-
Not used
3
DEG_MSK
1
DEG# signal Mask—blocks (masks) the backplane
DEG# signal from asserting the CPU_SMI#.
0 = enable DEG# signal
1 = disable (mask) DEG# signal
2
FAL_MSK
1
FAL# signal Mask—blocks (masks) the backplane FAL#
signal from asserting the CPU_SMI#.
0 = enable FAL# signal
1 = disable (mask) FAL# signal
Bits
Field
Default
Description
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