MSK030C-0900-NN-M1-UG0 R036030000模块现货

MSK030C-0900-NN-M1-UG0 R036030000

在MVME712M转换模块上，端口4可以配置为
DTE或DCE EIA-232-D串行端口，通过上的跳线头J19和J18
MVME712M。端口4也可以连接到TxC和RxC时钟
DB25连接器上可能存在的信号。这些联系
通过MVME712M上的集管J15制造（参见图2-3中的表3-6
第2章）。
❏ 当端口B配置为EIA-530接口时，EIA-53数据传输
通常通过MVME162前面板上的串行端口2发生。这个
MVME712系列转换模块应与
MVME162。
虽然信号出现在P2（见图2-5），但EIA-530
标准要求使用DB25连接器和平衡（非单端）线路；
P2适配器和MVME712系列转换不支持这些
模块。希望在P2使用EIA-530信号的系统集成商
必须提供适当的连接。
第2章中的图2-3（第3-6页）、图2-4（第3至4页）和图2-5
说明可用于端口B的工厂配置。请注意
图2-3表5和表6所示的配置不建议用于
由于时钟方向不正确，导致同步应用。
功能描述
4-8用户手册
4.
注意：不要将串行数据设备连接到上的等效端口
MVME712系列转换模块和MVME162
同时安装前面板。这可能导致冲突数据的同时传输。
不要将外围设备连接到端口1、端口3或
MVME712系列转换上的Centronics打印机端口
单元在EIA-232-D情况下，这些端口均未连接到任何MVME162电路。在EIA-530的情况下，
尝试使用这些端口会产生某些连接，可能会损坏MVME162或
外围设备。
工业包（IP）接口
MVME162上的IPIC ASIC支持四个工业分组（IP）接口；
可从前面板访问。请参阅IPIC编程
MVME162嵌入式控制器程序员参考指南中的型号
IP接口的详细信息。请参阅MVME162嵌入式控制器支持
IP连接器引脚分配信息手册。
以太网接口
Intel 82596CA LAN控制器用于实现以太网
收发器接口。82596CA使用DMA访问本地RAM
执行其正常功能的操作。因为82596CA的
内部缓冲区和VMEbus具有未定义的等待时间段，缓冲区
如果DMA被编程为访问VMEbus，则可能发生超限。
因此，82596CA不应编程为访问VMEbus。
为每个MVME162分配一个以太网站地址。地址是
$08003E2xxxxx，其中xxxxx是分配给
电路板（即，每个MVME162具有不同的xxxxx值）。
每个MVME162都有一个显示在标签上的以太网站地址
到背板连接器P2。此外，包括以太网在内的六个字节
站地址存储在BBRAM配置区域中。即，
08003E2xxxxx存储在BBRAM中。在地址$FFFC1F2C处
可以读取四个字节（08003E2x）。在地址$FFFC1F30处，较低的两个
可以读取字节（xxxx）。请参阅BBRAM/TOD时钟存储器映射
第3章中的说明。MVME162调试器能够
检索或设置以太网站点地址。

MSK030C-0900-NN-M1-UG0 R036030000

MSK030C-0900-NN-M1-UG0 R036030000

On MVME712M transition modules, Port 4 can be configured as either a
DTE or DCE EIA-232-D serial port via jumper headers J19 and J18 on the
MVME712M. Port 4 can also be connected to the TxC and RxC clock
signals which may be present on the DB25 connector. These connections
are made via header J15 on the MVME712M (see Figure 2-3, sheets 3-6 in
Chapter 2).
❏ When Port B is configured as an EIA-530 interface, EIA-530 data transfers
normally occur through serial port 2 on the MVME162 front panel. The
MVME712 series transition module should be disconnected from the
MVME162.
Although the signals are present at P2 (see Figure 2-5), the EIA-530
standard calls for a DB25 connector and balanced (not single-ended) lines;
these are not supported by the P2 adapter and MVME712 series transition
modules. System integrators who wish to use the EIA-530 signals at P2
must provide the appropriate connections.
Figure 2-3 (sheets 3-6), Figure 2-4 (sheets 3-4), and Figure 2-5 in Chapter 2
illustrate the factory configurations available for Port B. Note that the port
configurations shown in Figure 2-3, sheets 5 and 6 are not recommended for
synchronous applications because of the incorrect clock direction.
Functional Description
4-8 User’s Manual
4
Caution Do not connect serial data devices to the equivalent ports on
the MVME712 series transition module and the MVME162
front panel at the same time. This could result in simultaneous transmission of conflicting data.
Do not connect peripheral devices to Port 1, Port 3, or the
Centronics printer port on the MVME712 series transition
module. In the EIA-232-D case, none of these ports are connected to any MVME162 circuits. In the EIA-530 case,
attempting to use these ports would produce certain connections with the potential to damage the MVME162 or the
peripherals.
IndustryPack (IP) Interfaces
The IPIC ASIC on the MVME162 supports four IndustryPack (IP) interfaces;
these are accessible from the front panel. Refer to the IPIC Programming
Model in the MVME162 Embedded Controller Programmer’s Reference Guide for
details of the IP interface. Refer to the MVME162 Embedded Controller Support
Information manual for the pin assignments of the IP connectors.
Ethernet Interface
The Intel 82596CA LAN controller is used to implement the Ethernet
transceiver interface. The 82596CA accesses local RAM using DMA
operations to perform its normal functions. Because the 82596CA has small
internal buffers and the VMEbus has an undefined latency period, buffer
overrun may occur if the DMA is programmed to access the VMEbus.
Therefore, the 82596CA should not be programmed to access the VMEbus.
Every MVME162 is assigned an Ethernet station address. The address is
$08003E2xxxxx, where xxxxx is the unique 5-nibble number assigned to the
board (i.e., every MVME162 has a different value for xxxxx).
Each MVME162 has an Ethernet station address displayed on a label attached
to backplane connector P2. In addition, the six bytes including the Ethernet
station address are stored in the BBRAM configuration area. That is,
08003E2xxxxx is stored in the BBRAM. At an address of $FFFC1F2C, the upper
four bytes (08003E2x) can be read. At an address of $FFFC1F30, the lower two
bytes (xxxx) can be read. Refer to the BBRAM/TOD Clock memory map
description in Chapter 3. The MVME162 debugger has the capability to
retrieve or set the Ethernet station address.