1C31169G02輸出模塊，EMERSON使用速度
交流故障斷路器當交流故障中斷啟用且PCC接收到交流故障信號，7級中斷發(fā)送至MC68030。交流電源故障可以通過(guò)軟件啟用/禁用中斷。交流電源故障當請求時(shí)，中斷器提供狀態(tài)/ID向量。串行端口接口MVME147使用兩個(gè)Z8530串行通信控制器（SCC）實(shí)現四個(gè)串行端口的設備。5 MHz時(shí)鐘用于生成波特率時(shí)鐘，串行端口支持標準波特率（110到19200）。串行端口4也支持同步操作模式。
1C31169G02輸出模塊MVME147上的四個(gè)串行端口功能不同因為P2連接器上的引腳數量有限。電視連續劇端口1是最小功能異步端口。它使用RXD、CT、，TXD和RTS。串行端口2和3是全功能異步端口端口。他們使用RXD、CT、DCD、TXD、RTS和DTR。串行端口4是一個(gè)全功能異步或同步端口。它使用RXD，CT、DCD、TXD、RTS和DTR。它還與同步時(shí)鐘信號線(xiàn)。
所有四個(gè)串行端口使用EIA-232-D驅動(dòng)器和接收器，位于MVME147和所有信號線(xiàn)路由至P2。這個(gè)配置標頭位于MVME147和MVME712。外部輸入/輸出轉換板，如MVME712必須用于將P2引腳轉換為行業(yè)標準連接器。MVME712上的標題為以下各項提供了跳線(xiàn)可選選項：每個(gè)EIA-232-D接口配置為連接到DTE或DCE。有關(guān)SCCs的更多信息，請參閱Zilog文獻在相關(guān)文件中列出。MVME147-010上未使用以太網(wǎng)接口。MVME147使用AM79C90局域網(wǎng)控制器用于以太網(wǎng)（LANCE）和AM7992串行接口適配器（SIA）實(shí)現以太網(wǎng)收發(fā)器接口。平衡的來(lái)自AM7992的差分收發(fā)器信號線(xiàn)是耦合的通過(guò)車(chē)載變壓器連接至通向P2的信號線(xiàn)連接器并最終連接到MVME712過(guò)渡板，其中它們連接到行業(yè)標準DB-15連接器。
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.
