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Registers Format

3.5 Mode and Interrupt Control Register

The Mode and Interrupt control register is a write-only register. This register

control the AD operating modes and the IRQ level of the ACL-8111. The AD

operation modes include the AD clock source and the AD data transfer

method.

Address: BASE + 11

Attribute:

write only

Data Format:

Bit 7 6 5 4 3 2 1 0

BASE+11 X IR2 IR1 IR0 X M2 M1 M0

Where M0, M1, and M2 are mode selection:

M2 M1 M0 Description

0 0 0 Software trigger with program polling

0 0 1 (No interrupt generated)

0 1 0 External trigger with program polling

0 1 1

External trigger with interrupt polling

(With End-of-conversion “EOC” interrupt)

1 0 0

Internal time pacer trigger and polling

(No interrupt generating)

1 0 1 Not Used

1 1 0

Internal timer pacer trigger with interrupt data

transfer(With End-of-conversion “EOC” interrupt)

1 1 1 Not Used

Note

: The external trigger signal comes from the DI 0 (pin-1 of CN2).

Where IR0, IR1, and IR2 are interrupt IRQ level settings:

IR2 IR1 IR0 IRQ Level

0 0 0 IRQ2

0 0 1 Not Used

0 1 0 IRQ2

0 1 1 IRQ3

1 0 0 IRQ4

1 0 1 IRQ5

1 1 0 IRQ6

1 1 1 IRQ7

1 2 ... 23 24 25 26 27 28 29 30 31 32 33 ... 60 61

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Adlink ACL-8111 Manual do Utilizador Página 28