Measurement-computing CIO-DAS16Jr/16 Instrukcja Użytkownika Pobierz pdf (Strona 16)

Table 3-2. Register Summary

Pacer Clock Contol (8254)None. No read back on 8254BASE + 15

CTR 2 Data - A/D Pacer CTR 2 Data - A/D Pacer ClockBASE + 14

CTR 1 Data - A/D Pacer CTR 1 Data - A/D Pacer ClockBASE + 13

Counter 0 DataCounter 0 DataBASE + 12

Gain controlGain setting read-backBASE + 11

NonePacer clock control register.BASE + 10

Set DMA, INT etcDMA, Interrupt & Trigger ControlBASE + 9

NoneStatus EOC, UNI/BIP etc.BASE + 8

NoneNoneBASE + 7

NoneNoneBASE + 6

NoneNoneBASE + 5

NoneNoneBASE + 4

Digital 4 Bit OutputDigital 4 Bit InputBASE + 3

Channel MUX SetChannel MUX ReadBASE + 2

NoneA/D Bits 1 (MSB) - 8BASE + 1

Start A/D FunctionA/D Bits 9 - 16 (LSB) BASE

WRITE FUNCTIONREAD FUNCTIONADDRESS

3.2 A/D DATA & CHANNEL REGISTERS

BASE ADDRESS

A/D16

LSB

A/D15A/D14A/D13A/D12A/D11A/D10A/D9

01234567

A read/write register.

READ

On read, it contains the 8LSB’s of A/D data.

WRITE

Writing any data to the register causes an immediate A/D conversion.

BASE ADDRESS + 1

A/D8A/D7A/D6A/D5A/D4A/D3A/D2A/D1

MSB

01234567

A Read-only register.

On read the most significant A/D byte is read.

1 2 ... 11 12 13 14 15 16 17 18 19 20 21 ... 25 26

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Measurement-computing CIO-DAS16Jr/16 Instrukcja Użytkownika Strona 16