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A-2 Register Summary
Power Management Capabilities (PMC) 0x42–0x43 Read Only 4-15
Power Management Control/Status (PMCSR) 0x44–0x45 Read/Write 4-16
Reserved 0x28–0x2B – 4-10
Reserved 0x35–0x3B – 4-13
Revision ID (Rev ID) 0x08 Read Only 4-6
Status 0x06–0x07 Read/Write 4-5
Subsystem ID 0x2E–0x2F Read Only 4-11
Subsystem Vendor ID 0x2C–0x2D Read Only 4-10
Vendor ID 0x00–0x01 Read Only 4-2
Table A.2 LSI53C875A SCSI Register Map
Register Name Address Read/Write Page
Adder Sum Output (ADDER) 0x3C–0x3F Read Only 4-73
Chip Control 0 (CCNTL0) 0x56 Read/Write 4-95
Chip Control 1 (CCNTL1) 0x57 Read/Write 4-97
Chip Test Five (CTEST5) 0x22 Read/Write 4-60
Chip Test Four (CTEST4) 0x21 Read/Write 4-59
Chip Test One (CTEST1) 0x19 Read Only 4-53
Chip Test Six (CTEST6) 0x23 Read/Write 4-62
Chip Test Three (CTEST3) 0x1B Read/Write 4-56
Chip Test Two ( CTES T2) 0x1A Read O nly ( bit 3 wr it e) 4 -54
Chip Test Zero (CTEST0) 0x18 Read/Write 4-53
Cumulative SCSI Byte Count (CSBC) 0xDC–0xDF Read/Write 4-108
Data Structure Address (DSA) 0x10–0x13 Read/Write 4-47
DMA Byte Counter (DBC) 0x24–0x26 Read/Write 4-62
Table A.1 LSI53C875A PCI Register Map (Cont.)
Register Name Address Read/Write Page