參數(shù)資料
型號(hào)： MB86603
廠商： FUJITSU LTD
元件分類(lèi)： 總線控制器
英文描述： Communication Control SCSI-II Protocol Controller(通信控制SCSI-II協(xié)議控制器)
中文描述： SCSI BUS CONTROLLER, PQFP176
封裝： PLASTIC, SQFP-176
文件頁(yè)數(shù)： 5/58頁(yè)
文件大?。?/td> 401K
代理商： MB86603
5
MB86603
I
BLOCK DESCRIPTION
1. Internal processor (sequensor)
This processor provides sequence control between each phase.
2. Timer
This timer manages timing specified by the SCSI and the following timing.
REQ/ACK assertion time for data at asynchronous transfer
Selection/reselection retry time
Selection/reselection timeout time
REQ/ACK timeout time during transfer
Asynchronous transfer (target): Time required for initiator to assert ACK signal after asserting REQ signal
Asynchronous transfer (initiator): Time required for target to negate REQ signal after asserting ACK signal
Synchronous transfer (target only):
Time required for target to send REQ signal and then receive ACK
signal for setting offset to 0 from initiator
3. Phase Controller
This controller controls the arbitration, selection/reselection, data in/out, command, status, and message in/out
phases executed on the SCSI bus.
4. Transfer Controller
This controller controls the information (data, command, status, message) transfer phase executed on the SCSI bus.
There are two transfer types for executing the information transfer phase.
Asynchronous transfer: Control by interlocking REQ and ACK signals
Synchronous transfer: Control with maximum of 32-byte offset value in data in/out phase
There are two types of modes depending on the data movement as follows:
Program transfer: Performed via MPU interface using data registers
DMA transfer: Performed via DMA interface using DREQ and DACK pins
At synchronous transfer, the transfer parameters (transfer mode, minimum cycle period of REQ or ACK signal sent
from SPC in synchronous transfer, and maximum REQ/ACK offset value in synchronous transfer) can be saved for
each ID and automatically set when the data phase is started. The transfer byte count is determined by block length
×
number of blocks.
Information-transfer
phase
Bus-free phase
Arbitration phase
Selection phase
Information-transfer phase
Command phase
Data phase
Status phase
Message phase
相關(guān)PDF資料
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MB86604 制造商:FUJITSU 制造商全稱(chēng):Fujitsu Component Limited. 功能描述:SCSI-II Protocol Controller (with single-ended driver/receiver)
MB86604L 制造商:FUJITSU 制造商全稱(chēng):Fujitsu Component Limited. 功能描述:SCSI-II Protocol Controller (with single-ended driver/receiver)
MB86604LPFV 制造商:FUJITSU 制造商全稱(chēng):Fujitsu Component Limited. 功能描述:SCSI-II Protocol Controller (with single-ended driver/receiver)
MB86606A 制造商:FUJITSU 制造商全稱(chēng):Fujitsu Component Limited. 功能描述:FAST-20 SCSI Protocol Controller
MB86606APMT2 制造商:FUJITSU 制造商全稱(chēng):Fujitsu Component Limited. 功能描述:FAST-20 SCSI Protocol Controller
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