1C31169G02输出模块，EMERSON使用速度

交流故障断路器当交流故障中断启用且PCC接收到交流故障信号，7级中断发送至MC68030。交流电源故障可以通过软件启用/禁用中断。交流电源故障当请求时，中断器提供状态/ID向量。串行端口接口MVME147使用两个Z8530串行通信控制器（SCC）实现四个串行端口的设备。5 MHz时钟用于生成波特率时钟，串行端口支持标准波特率（110到19200）。串行端口4也支持同步操作模式。

1C31169G02输出模块MVME147上的四个串行端口功能不同因为P2连接器上的引脚数量有限。电视连续剧端口1是最小功能异步端口。它使用RXD、CT、，TXD和RTS。串行端口2和3是全功能异步端口端口。他们使用RXD、CT、DCD、TXD、RTS和DTR。串行端口4是一个全功能异步或同步端口。它使用RXD，CT、DCD、TXD、RTS和DTR。它还与同步时钟信号线。

所有四个串行端口使用EIA-232-D驱动器和接收器，位于MVME147和所有信号线路由至P2。这个配置标头位于MVME147和MVME712。外部输入/输出转换板，如MVME712必须用于将P2引脚转换为行业标准连接器。MVME712上的标题为以下各项提供了跳线可选选项：每个EIA-232-D接口配置为连接到DTE或DCE。有关SCCs的更多信息，请参阅Zilog文献在相关文件中列出。MVME147-010上未使用以太网接口。MVME147使用AM79C90局域网控制器用于以太网（LANCE）和AM7992串行接口适配器（SIA）实现以太网收发器接口。平衡的来自AM7992的差分收发器信号线是耦合的通过车载变压器连接至通向P2的信号线连接器并最终连接到MVME712过渡板，其中它们连接到行业标准DB-15连接器。

AC Fail Interrupter

When the AC Fail interrupt is enabled and the PCC receives an AC

Fail signal, a Level 7 interrupt is sent to the MC68030. The AC Fail

interrupt can be enabled/disabled by software. The AC Fail

interrupter provides a status/ID vector when requested.

Serial Port Interface

The MVME147 uses two Z8530 Serial Communications Controller

(SCC) devices to implement the four serial ports. A 5 MHz clock is

used to generate the baud rate clock and the serial ports support the

standard baud rates (110 through 19,200). Serial port 4 also

supports synchronous modes of operation.

The four serial ports on the MVME147 are different functionally

because of the limited number of pins on the P2 connector. Serial

port 1 is a minimum function asynchronous port. It uses RXD, CTS,

TXD, and RTS. Serial ports 2 and 3 are full function asynchronous

ports. They use RXD, CTS, DCD, TXD, RTS, and DTR. Serial port 4

is a full function asynchronous or synchronous port. It uses RXD,

CTS, DCD, TXD, RTS, and DTR. It also interfaces to the

synchronous clock signal lines.

All four serial ports use EIA-232-D drivers and receivers located on

the MVME147 and all the signal lines are routed to P2. The

configuration headers are located on the MVME147 and the

MVME712. An external I/O transition board such as the MVME712

must be used to convert the P2 pin out to industry standard

connectors.

Headers on the MVME712 provide jumper selectable options for

each EIA-232-D interface to be configured to connect to DTE or

DCE.

For additional information on the SCCs, refer to the Zilog literature

listed in Related Documents. The Ethernet interface is not used on the MVME147-010.

The MVME147 uses the AM79C90 Local Area Network Controller

for Ethernet (LANCE) and the AM7992 Serial Interface Adapter

(SIA) to implement the Ethernet transceiver interface. The balanced

differential transceiver signal lines from the AM7992 are coupled

via an onboard transformer to signal lines that go to the P2

connector and eventually to the MVME712 transition board, where

they are connected to an industry standard DB-15 connector.