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(hào)的信號(hào)調(diào)理而設(shè)計(jì)。 所有通道通過(guò)跳線選擇的4 Hz低通濾波器進(jìn)行多路復(fù)用，提供了多個(gè)增益范圍選項(xiàng)。 這些通道可多路復(fù)用控制DAQ設(shè)備的單個(gè)通道中，從而增加了DAQ系統(tǒng)的通道數(shù)
NI SCXI-1100電壓輸入模塊VMEbus短輸入/輸出內(nèi)存映射VMEchip全局控制和狀態(tài)寄存器（GCSR）設(shè)置出現(xiàn)在VMEbus短輸入/輸出內(nèi)存映射中的奇數(shù)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(qǐng)求VMEchip全局寄存器當(dāng)它們被選中時(shí)。請(qǐng)注意，GCSR只能在中訪問(wèn)主管數(shù)據(jù)空間；沒(méi)有可用的用戶模式訪問(wèn)。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(guò)VMEbus訪問(wèn)其自己的VMEchip GCSR。MVME147（和MVME147Bug默認(rèn)值）通過(guò)GCSR基址用$F編程。這是有意實(shí)現(xiàn)的因此GCSR集不會(huì)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(dāng)起始地址小于16MB時(shí)，DRAM響應(yīng)標(biāo)準(zhǔn)或擴(kuò)展地址修飾符。當(dāng)起始地址為16MB或更大時(shí)，DRAM僅響應(yīng)擴(kuò)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(jìn)一步控制對(duì)標(biāo)準(zhǔn)和擴(kuò)展的響應(yīng)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(kuò)展地址。在標(biāo)準(zhǔn)中DRAM響應(yīng)$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.
