ADLINK Technology cPCI-9116 Guide de l'utilisateur télécharger pdf (Page 30)

20 • Registers

4.2 Internal Timer/Counter Register

The 9116 series card basically has 6 counters, which are responsible for the

scan timing of the analog input data acquisition. The 6 counters occupy 6 I/O

address locations in the 9116 card as shown below.

Address: BASE + 0 ~ BASE + 14

Attribute: read / write

Data Format:

Base + 0x00 Scan Interval Counter Register (R/W) 24bit

Base + 0x04 Sample Interval Counter Register (R/W) 16bit

Base + 0x08 Scan Counter Register (R/W) 24bit

Base + 0x0C DIV Counter Register (R/W) 9bit

Base + 0x10 Delay1 Counter Register (R/W) 16bit

Base + 0x14 M Counter Register (R/W) 16bit

Table 3. Timer/Counter Register Address

SI_counter: Scan Interval counter

SI2_counter: Sample Interval counter

SC_counter: total Scan Count counter

DIV_counter: specify the number of samples per scan

DLY1_counter: Delay Interval counter (only used in delay trigger

mode)

M_counter: specify the number of scans before a trigger (only

used in pre-trigger and middle-trigger modes)

1 2 ... 25 26 27 28 29 30 31 32 33 34 35 ... 66 67

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ADLINK Technology cPCI-9116 Guide de l'utilisateur Page 30