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ACS9020

更新时间： 2024-02-04 22:04:17
品牌 Logo 应用领域
商升特 - SEMTECH 接口集成电路
页数 文件大小 规格书
43页 254K
描述
Interface Circuit, PQFP64, TQFP-64

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ACS9020 技术参数

生命周期：Obsolete零件包装代码：QFP
包装说明：LQFP,针数：64
Reach Compliance Code：unknown风险等级：5.84
接口集成电路类型：INTERFACE CIRCUITJESD-30 代码：S-PQFP-G64
长度：14 mm功能数量：1
端子数量：64最高工作温度：85 °C
最低工作温度：-40 °C封装主体材料：PLASTIC/EPOXY
封装代码：LQFP封装形状：SQUARE
封装形式：FLATPACK, LOW PROFILE认证状态：Not Qualified
座面最大高度：1.6 mm表面贴装：YES
温度等级：INDUSTRIAL端子形式：GULL WING
端子节距：0.8 mm端子位置：QUAD
宽度：14 mmBase Number Matches：1

ACS9020 数据手册

 浏览型号ACS9020的Datasheet PDF文件第5页浏览型号ACS9020的Datasheet PDF文件第6页浏览型号ACS9020的Datasheet PDF文件第7页浏览型号ACS9020的Datasheet PDF文件第9页浏览型号ACS9020的Datasheet PDF文件第10页浏览型号ACS9020的Datasheet PDF文件第11页 
Allmodesare selectableviaCM(3:1)eitherdirectlyvia  
pins or via the microprocessor interface. All the  
diagnostic modes, including remote loop-back and  
local loop-back are selectable individually for each  
mainandmaintenancechannelviathemicroprocessor  
interface.  
Diagnostic modes (main channel)  
TheACS4110hasfourdiagnostic/configurationmodes  
implemented for the main channels, configured by  
CM(3:1).Thefollowingdiagnostic/configurationmodes  
are implemented for the main channels:  
Full-Duplex  
- full duplex  
- full duplex slave  
- full duplex master  
- remote loop-back  
- local loop-back  
In the full-duplex configuration, the RCLK clock of  
both devices track the average frequency of the  
corresponding TCLK clock of the opposite end of  
the link. The receiving Digital-Phase-Lock Loop  
(DPLL) system makes periodic adjustments to the  
RCLK clock to ensure that the average frequency is  
exactly the same as the far-end TCLK clock. In  
summary, each TCLK is an independent master clock  
and each RCLK a slave of the far-end TCLK clock.  
The modes are selectable via CM(3:1) either directly  
viapins,viathemicroprocessorinterfaceorviaremote  
control setup. All modes remote loop-back and local  
loop-back are selectable individually for each channel  
via the microprocessor interface. Table 5. shows the  
selection of diagnostic modes and configurations.  
The relationship between TmCLK and RmCLK are  
treated similarly.  
CM(3:1)  
111  
Diagnostic Mode/Configuration  
Full-Duplex Slave  
local loop-back initiated from far end  
(remote setup only)  
remote loop-back initiated from far end  
local loop-back  
remote loop-back  
full duplex master  
full duplex slave  
full duplex slave/remote full duplex  
(remote setup only)  
In slave mode, the TCLK and RCLK clock is derived  
from the TCLK clock of the far-end modem, such  
that their average frequencies are identical. Clearly,  
it is essential that only one modem within a  
communicating pair is configured in slave mode. The  
CKC pin should be forced to GND, so that TCLK is  
always configured as an output.  
110  
101  
100  
011  
010  
001  
000  
full duplex  
The relationship between TmCLK and RmCLK are  
treated similarly. The CKM pin should be forced to  
GND, so that TmCLK is always configured as an  
output.  
Table 5: Selection of diagnostic modes  
Inremotesetup(ENRSB=0), thefar-enddevicewillbe  
setup complementary to the near-end device (control  
device) according to the Table 6.  
Full-Duplex Master  
In master mode, the local RCLK clock is internally  
generated from the local TCLK clock. The local  
TCLK clock may be internally or externally generated.  
Master mode is only valid if the far-end device is  
configured in slave mode or if the far-end TCLK clock  
is derived from the far-end RCLK clock. Only one  
modem within a communicating pair may be  
configured as a master.  
CM(3:1)  
Near End initiate  
(Control device)  
Far End initiate  
(Remote control device)  
111  
110  
101  
100  
011  
010  
001  
full duplex  
*
local loop-back  
remote loop-back  
full duplex  
local loop-back  
remote loop-back  
full-fuplex master  
full-duplex slave  
full-duplex slave  
*
full-duplex slave  
full-duplex master  
full-duplex  
000  
full duplex  
full duplex  
The relationship between TmCLK and RmCLK are  
treated similarly.  
Table 6: Selection of diagnostic modes  
Local Loopback  
* Remote Loop-back Detect.  
In local loopback mode, TPN and TmD data is looped  
back inside the near-end modem and is output at its  
own RPN and RmD outputs.  
For a remote loop-back initiated from the far end  
device, CM(3:1)=110, the initiating end transmitting  
and receiving the data will be setup as full duplex (see  
Figure:1).  
Data received from the far-end device is ignored,  
except to maintain lock. If concurrent requests occur  
for local and remote loopback, local loopback is  
selected. The local loopback diagnostic mode is used  
to test data flow up to, and back from, the local  
ACS4110 and does not test the integrity of the link  
itself. Therefore, local loopback operates  
independently of synchronisation with a second  
modem (i.e. DCD may be High or Low). The local  
For remote loop-back, CM(3:1)=100, the remote  
loopback is initiated from the near end.  
In both cases, the data that is looped back will be the  
data applied to the near end device (see Figure:1).  
ACS411CS PRE-RELEASE Issue 6.0 July 1999.  
8
1...567891011...43

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