參數(shù)資料
型號: AM53CF94JC
廠商: ADVANCED MICRO DEVICES INC
元件分類: 總線控制器
英文描述: Enhanced SCSI-2 Controller (ESC)
中文描述: SCSI BUS CONTROLLER, PQCC84
封裝: PLASTIC, LCC-84
文件頁數(shù): 2/76頁
文件大?。?/td> 735K
代理商: AM53CF94JC
P R E L I M I N A R Y
AMD
2
Am53CF94/Am53CF96
parity error. This command facilitates data recovery and
thereby minimizes the need to re-transmit data.
AMD’s exclusive power-down feature can be enabled to
help reduce power consumption during the chip’s sleep
mode. The receivers on the SCSI bus may be turned off
to eliminate current that may flow because termination
power (~3 V) is close to the trip point of the input buffers.
The patented GLITCH EATER Circuitry in the
Enhanced SCSI-2 Controller can be programmed to
filter glitches with widths up to 35 ns. It is designed to
dramatically increase system reliability by detecting and
removing glitches that may cause system failure. The
GLITCH EATER Circuitry is implemented on the
ACK
and
REQ
lines since they are most susceptible to
electrical anomalies such as reflections and voltage
spikes. Such signal inconsistencies can trigger false
REQ
/
ACK
handshaking, false data transfers, addition of
random data, and double clocking. AMD’s GLITCH
EATER Circuitry therefore maintains system perform-
ance and improves reliability. The following diagram
illustrates this circuit’s operation.
The Am53CF94 is also available in a 3.3 V version.
SCSI Environment
Device without the
GLITCH EATER Circuit
AMD’s Device with the
GLITCH EATER Circuit
GLITCH EATER Circuitry in SCSI Environment
Note:
The Glitch Window is programmable via Control Register Four (0DH), bits 6 & 7. Window may be set to 35 ns (max). Default
setting is 12 ns (single-ended).
17348B-1
Glitch Window
SYSTEM BLOCK DIAGRAM
9
CPU
DMA
Memory
Am53CF94/96
8
16
16
4
9
SCSI Data
16
DMA
Addr
Data
SCSI Control
16
17348B-2
相關(guān)PDF資料
PDF描述
Am53CF94JCW Enhanced SCSI-2 Controller (ESC)
Am53CF94KC Enhanced SCSI-2 Controller (ESC)
Am53CF94KCW Enhanced SCSI-2 Controller (ESC)
Am53CF96 Enhanced SCSI-2 Controller (ESC)
Am53CF96JC Enhanced SCSI-2 Controller (ESC)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AM53CF94JCW 制造商:AMD 制造商全稱:Advanced Micro Devices 功能描述:Enhanced SCSI-2 Controller (ESC)
AM53CF94KC 制造商:AMD 制造商全稱:Advanced Micro Devices 功能描述:Enhanced SCSI-2 Controller (ESC)
AM53CF94KCW 制造商:AMD 制造商全稱:Advanced Micro Devices 功能描述:Enhanced SCSI-2 Controller (ESC)
AM53CF96 制造商:AMD 制造商全稱:Advanced Micro Devices 功能描述:Enhanced SCSI-2 Controller (ESC)
AM53CF96JC 制造商:AMD 制造商全稱:Advanced Micro Devices 功能描述:Enhanced SCSI-2 Controller (ESC)