Adlink ACL-8111 Manual do Utilizador descarregar pdf (Página 37)

Operation Theorem

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Note that the D/A registers are "double buffered", so that the D/A analog

output signals will not be updated until the high byte is written. When write 12

bits data to D/A registers of the ACL-8111, the low byte must be written

before the high byte. This procedure can insure a single step transition when

the D/A conversion.

Note:

when writing digital data to D/A register,

the low byte data should

be written first

, because the register will temporarily hold and not

released to output. After the high byte is written, both high and low

will add and passed to A/D converter.

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Adlink ACL-8111 Manual do Utilizador Página 37