NI SCXI-1100電壓輸入模塊32通道，±10 V，4 Hz 濾波器，用于SCXI的電壓輸入模塊 - SCXI-1100專為毫伏、伏特和電流信號的信號調理而設計。 所有通道通過跳線選擇的4 Hz低通濾波器進行多路復用，提供了多個增益范圍選項。 這些通道可多路復用控制DAQ設備的單個通道中，從而增加了DAQ系統(tǒng)的通道數
NI SCXI-1100電壓輸入模塊VMEbus短輸入/輸出內存映射VMEchip全局控制和狀態(tài)寄存器（GCSR）設置出現在VMEbus短輸入/輸出內存映射中的奇數地址處。VMEchip中的映射解碼器監(jiān)視地址和地址修飾符行和請求VMEchip全局寄存器當它們被選中時。請注意，GCSR只能在中訪問主管數據空間；沒有可用的用戶模式訪問。VMEchip GCSR基址是使用控件選擇的VMEchip中的寄存器（GCSR基址配置寄存器）本地控制和狀態(tài)寄存器（LCSR），如表3-7所示。A.MVME147可以通過VMEbus訪問其自己的VMEchip GCSR。MVME147（和MVME147Bug默認值）通過GCSR基址用$F編程。這是有意實現的因此GCSR集不會映射到VMEbus上。筆記1.DRAMsize=DRAM的大小。例如，如果使用4MB版本，則DRAMsize=400000美元，（3 x DRAMsize）-1=BFFFFF美元。2、當起始地址小于16MB時，DRAM響應標準或擴展地址修飾符。當起始地址為16MB或更大時，DRAM僅響應擴展地址修飾符。注意，VMEchip中的第4位和第5位從地址修改器寄存器進一步控制對標準和擴展的響應地址修飾符。3.此組合僅適用于16MB或32MB的DRAMsize表中所示的值僅指擴展地址。在標準中DRAM響應$000000到$7FFFFF的地址范圍。
VMEbus Short I/O Memory Map
The VMEchip Global Control and Status Register (GCSR) Set
appears at odd addresses in the VMEbus short I/O memory map.
A map decoder in the VMEchip monitors the address and the
address modifier lines and requests the VMEchip global registers
when they are selected. Note that the GCSR can only be accessed in
Supervisor Data Space; no User Mode accesses are available.
The VMEchip GCSR base address is selected using a control
register (GCSR base address configuration register) in the VMEchip
Local Control and Status Register (LCSR) as shown in Table 3-7. A
MVME147 may access its own VMEchip GCSR via the VMEbus.
The MVME147 (and the MVME147Bug default) powers up with the
GCSR base address programmed with $F. This is intentionally done
so that the GCSR set is not mapped on the VMEbus.Notes
1. DRAMsize = the size of the DRAM. For example, if the 4MB version is used, then
DRAMsize = $400000, and (3 x DRAMsize)-1 = $BFFFFF.
2. When beginning address is less then 16MB, the DRAM responds to standard or
extended address modifiers. When beginning address is 16MB or greater, the DRAM
responds to extended address modifiers only. Note that bits 4 and 5 in the VMEchip
Slave Address Modifier Register further control response to standard and extended
address modifiers.
3. This combination pertains only to DRAMsize of 16MB or 32MB.
4. The values shown in the table refer to extended addresses only. In the standard
address range the DRAM responds to $000000 through $7FFFFF.
