Radisys 97-9029-04工控DCS系統(tǒng)

1.產(chǎn) 品 資 料 介 紹：

中文資料：

奇偶校驗功能在上電時未啟用，必須通過將RFM CSR的本地中斷啟用（LIER）寄存器中的位13設(shè)置為偏移$14來啟用。

要使用奇偶校驗函數(shù)，必須在32位（Lword）或64位（Qword）邊界上進行寫入。奇偶校驗有效時，禁止8位（字節(jié)）寫入和16位（字）寫入。此外，由于RAM沒有在有效的奇偶校驗狀態(tài)下通電，所以要用奇偶校驗讀取的任何位置都必須首先通過寫入一些數(shù)據(jù)模式來初始化。否則，讀取將斷言一個錯誤的奇偶校驗錯誤。

Radisys 97-9029-04具有單個可編程VME總線中斷輸出。Radisys 97-9029-04上的一個或多個事件可能導(dǎo)致中斷。VMEbus中斷的源可以通過幾個寄存器單獨啟用和監(jiān)控。

Radisys 97-9029-04中斷通過稱為本地中斷狀態(tài)寄存器（LISR）和本地中斷啟用寄存器（LIER）的兩個RFM CSR進行選擇和監(jiān)控。有關(guān)這兩個寄存器的詳細說明，請參閱編程部分。

英文資料：

The parity function is not enabled at power up and must be enabled by setting Bit 13 in the RFM CSR’s Local Interrupt Enable (LIER) register at offset $14.

 To use the parity function, writes must occur on 32-bit (Lword) or 64-bit (Qword) boundaries. While parity is active, 8-bit (byte) writes and 16-bit (word) writes are prohibited. In addition, since the RAM does not power up in a valid parity state, any location that is to be read with parity must first be initialized by a write of some data pattern. Otherwise the read will assert an erroneous parity error.

The Radisys 97-9029-04 has a single programmable VMEbus interrupt output. One or more events on the Radisys 97-9029-04 can cause the interrupt. The sources of the VMEbus interrupt can be individually enabled and monitored through several registers.

The Radisys 97-9029-04 interrupts are selected and monitored through the two RFM CSRs referred to as the Local Interrupt Status Register (LISR) and the Local Interrupt Enable Register (LIER). For a detailed description of the two registers refer to the Programming section. 

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