5-11
C2K User’s Guide
Resources
5.2.2 Interrupt Registers
Table 5-8 lists the interrupt registers included in the FPGA that provide interrupt status and inter-
rupt blocking (masking).
Interrupt Mask Register 1
The Interrupt Mask Register 1 provides interrupt masking for the PMC sites and integrated
USART.
Table 5-8
Interrupt summary registers
Offset
Register
Description
0x20
Interrupt Mask Reg 1
Provides interrupt masking for PMC sites and
integrated USART ports.
0x22
Unused
Unused
0x24
Interrupt Status Reg 1
Provides interrupt status for PMC sites and inte-
grated USART ports.
0x26
Unused
Unused
0x28
SMI Mask
Provides masking for inputs to CPU_SMI#.
0x2A
SMI Status
Provides status of inputs to CPU_SMI#.
Address offset:
0x20
Access:
Read/write
Bits
Field
Default
Description
15
PMC1_CPCI_INTA_MSK
0x1
PMC1/[CPCI Interrupt A or CPCI_BRG_P] Interrupt Mask— blocks
(masks) INTA from the PMC module installed on PMC1. When the
Board is in the system slot, the CPCI_BRG_P_INT signal is or’ed
with the PMC1 INTA signal. When the board is not in the system
slot, the CPCI INTA signal is or’ed with the PMC1 INTA signal .
0 = enable interrupt
1 = disable (mask) interrupt
14
PMC1_CPCI_INTB_MSK
Xx7
PMC1 INTB Mask—blocks (masks) INTB from the PMC module
installed on PMC1. Each bit indicates a logic or of the PMC and
CPCI interrupt. When the board is not in the system controller slot,
the CPCI interrupts are disabled.
0 = enable interrupt
1 = disable (mask) interrupt
13
PMC1_CPCI_INTC_MSK
PMC1 INTB Mask—blocks (masks) INTB from the PMC module
installed on PMC1. Each bit indicates a logic or of the PMC and
CPCI interrupt. When the board is not in the system controller slot,
the CPCI interrupts are disabled.
0 = enable interrupt
1 = disable (mask) interrupt
12
PMC1_CPCI_INTD_MSK
PMC1 INTB Mask—blocks (masks) INTB from the PMC module
installed on PMC1. Each bit indicates a logic or of the PMC and
CPCI interrupt. When the board is not in the system controller slot,
the CPCI interrupts are disabled.
0 = enable interrupt
1 = disable (mask) interrupt
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