MB86605 Fujitsu Microelectronics, Inc., MB86605 Datasheet - Page 16
MB86605
Manufacturer Part Number
MB86605
Description
CMOS-wide Scsi-ii Protocol Controller With Pci Interface
Manufacturer
Fujitsu Microelectronics, Inc.
Datasheet
1.MB86605.pdf
(64 pages)
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MB86605
6. Receive MSG, CMD, Status Buffer (Receive MCS Buffer)
This is a 32-byte receive-only information buffer that holds the information for the message, command, and status
received from the SCSI bus.
7. Send MSG, CMD, Status Buffer (Send MCS Buffer)
This is a 32-byte send-only information buffer that holds the information for the message, command, and status
sent on the SCSI bus.
8. User Program Memory
This is a 2048-byte program memory that stores programmable commands. It can consist of 1024-byte
or 2048-byte
9. Data Register
This is a 64-byte FIFO data register that holds data in the data phase executed on the SCSI bus.
10. Burst FIFO
64-byte FIFO type data buffer to perform burst transfer during the PCI bus interface mode. The device has total
128-byte FIFO with Data Register and Burst FIFO in the PCI bus interface mode.
11. DMA Controller
This is a 32-bit DMA Controller that performs data transfer. This DMAC is a bus master during the PCI bus interface
mode.
• Command step register
• Group 6/7 command length setting register
This register indicates the execution status of each command with an 8-bit step code.
Error causes can be analyzed by referencing the interrupt status register and this register.
This register sets the group 6/7 command length not defined in the SCSI standard.
Setting this register determines the group 6/7 command length.
1 bank.
2 banks
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