Sun Microsystems Ultra 5, Service Manual

Page: 232 / 258

C-32 Sun Ultra 5 Service Manual • February 2000
FIGURE C-15
Interrupt Scheme Block Diagram
TABLE C-15
Interrupt Routing
RISC Pin Interrupt Int/Ext Source
INT_NUM
(from RISC)
Type Offset Priority
SB0_INTREQ7 Not used Ext PCI 0x07 Level 0x00 7
SB0_INTREQ5 Not used Ext PCI 0x05 Level 0x01 5
SB2_INTREQ5 Not used Ext PCI 0x05 Level 0x02 5
SB0_INTREQ2 Not used Ext PCI 0x02 Level 0x03 2
SB1_INTREQ7 Not used Ext PCI 0x0F Level 0x04 7
SB1_INTREQ5 Not used Ext PCI 0x0D Level 0x05 5
SB3_INTREQ5 Not used Ext PCI 0x1D Level 0x06 5
SB1_INTREQ2 Not used Ext PCI 0x0A Level 0x07 2
SB2_INTREQ7 Not used Ext PCI 0x17 Level 0x08 6
NO RISC PIN Not used Ext PCI 0x38 Level 0x09 5
NO RISC PIN Not used Ext PCI 0x10 Level 0x0A 2
SB1_INTREQ2 Not used Ext PCI 0x12 Level 0x0B 1
NO RISC PIN Not used Ext PCI 0x18 Level 0x0C 6
NO RISC PIN Not used Ext PCI 0x39 Level 0x0D 5
RISC
PCI A Int
PCI B Int
INT_NUM[5:0]
374
Reg_INT_NUM[5:0]
PCI_CLK
CLK
CLK
EBus2 Int
CPU
module
ASIC
(33-MHz)