Adlink ACL-8112 Series Uživatelský manuál stáhnout pdf (Strana 48)

40 • Registers

4.9 D/A Output Register

The D/A converter will convert the D/A output register data to an analog

signal. The register data at address Base + 4 and Base + 5 are used for D/A

channel 1and Base +6 and Base +7 for D/A channel 2.

Address : BASE + 4 & BASE + 5

Attribute: write only

Data Format: (for D/A Channel 1)

Bit 7 6 5 4 3 2 1 0

Base + 4 DA7 DA6 DA5 DA4 DA3 DA2 DA1 DA0

Base + 5 X X X X DA11 DA10 DA9 DA8

Address : BASE + 6 & BASE + 7

Attribute: write only

Data Format: (for D/A Channel 2)

Bit 7 6 5 4 3 2 1 0

Base + 6 DA7 DA6 DA5 DA4 DA3 DA2 DA1 DA0

Base + 7 X X X X DA11 DA10 DA9 DA8

DA0 is the LSB and DA11 is the MSB of the 12 bits data.

X: don't care

Note: The D/A registers are "double buffered" so that the D/A analog output

signals will not updated until the second (high) byte contains data or

written to. This will ensure a single step transition for a D/A conversion.

1 2 ... 43 44 45 46 47 48 49 50 51 52 53 ... 91 92

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Adlink ACL-8112 Series Uživatelský manuál Strana 48