LSI LSI53C875A Technical Manual

259, PCI and External Memory Interface Timing Diagrams 6-21 Table 6.22 Burst Opcode Fetch, 32-Bit Address and Data Symbol Parameter Min Max Unit t 1 Shared signal input setup time 7 – ns t 2 Shared signal input hold time 0 – ns t 3 CLK to shared signal output valid 2 11 ns t 4 Sid…

278, 6-40 Electrical Specifications Figure 6.24 External Memory Write 12 34 5 6 78 9 CLK (Driven by System) PA R (Driven by Master-Addr; IRDY/ (Driven by Master) TRDY/ (Driven by LSI53C875A) STOP/ (Driven by LSI53C875A) DEVSEL/ (Driven by LSI53C875A) AD (Driven by Master-Addr; C_BE[3:0]/ (Driven…

165, LSI LSI53C875A SCSI Registers 4-73 Registers:0x3C–0x3F Adder Sum Output (ADDER) Read Only ADDER Adder Sum Output [31:0] This register contains the output of the internal adder, and is used primarily for test purposes. The power-up value for this register is indeterminate. It is used to determine if the correct …

210, 5-10 SCSI SCRIPTS Instruction Set register contains 0x000000, an illegal instruction interrupt is generated. 4. The LSI53C875A transfers the number of bytes specified in the DBC register starting at the address specified in the DMA Next Address (DNAD) register. If the OpCode bit is set and a …

305, Register Summary A-5 SCSI Interrupt Enable Zero (SIEN0) 0x40 Read/Write 4-73 SCSI Interrupt Status One (SIST1) 0x43 Read Only 4-78 SCSI Interrupt Status Zero (SIST0) 0x42 Read Only 4-76 SCSI Longitudinal Parity (SLPAR) 0x44 Read/Write 4-79 SCSI Output Control Latch (SOCL) 0x09 Read/Write 4-37 SCSI …

94, 4-2 Registers bits that are currently supported by the LSI53C875A are described in this chapter. Reserved bits should not be accessed . Registers:0x00–0x01 Vendor ID Read Only VID Vendor ID [15:0] This 16-bit register identifies the manufacturer of the device. The Vendor ID is 0x1000. Table 4.1…