User`s manual

C0SRC

This bit allows the user to select the clock source for user Counter 0.

1 = Internal 10 MHz oscillator

0 = External clock source input via CTR0CLK pin on 100-pin connector.

READ

-------XTRIG----INDX_GT---

0123456789101112131415

XTRIG

1 = External Trigger flip-flop has been set. This bit is write-cleared.

0 = External Trigger flip-flop reset. No trigger has been received.

INDX_GT

1 = Pre-trigger index counter has completed its count.

0 = Pre-trigger index counter has not been gated on or has not yet completed its count.

7.3.4 CALIBRATION REGISTER

As mentioned before, direct register-level programming instruction is beyond the scope of this manual, and

should be attempted only by programmers having experience in register-level programming. This is also

true for register-level calibration. If you’re not sure, don’t attempt it. Call Technical Support for further

information.

BADR1 + 6

This register controls all autocal operations. This is a write-only register.

WRITE

--------

SEL8800SEL7376-CSRC0CSRC1CSRC2CALENSDI

0123456789101112131415

SEL8800

This bit enables the 8-bit trim DACs for the following circuits:

ADC

Fine Offset

ADC

Coarse

Offset

DAC1

Coarse Gain

DAC1

Fine Gain

DAC1

Offset

DAC0

Offset

DAC0

Coarse Gain

DAC0

Fine Gain

Cal Function DAC Channel

SEL7376

This bit latches the 7-bit serial data stream into the AD7376 digital potentiometer

(10 kohm). The AD7376 is used for analog front-end gain calibration.