Specifications

7-30

SEQ2 is irrelevant in cascaded mode.

At the start of an autosequenced session, SEQ_CNTR_n is loaded with the

value from MAX_CONVn. The SEQ_CNTR_n bits can be read at any time dur-

ing the countdown process to check status of the sequencer. This value, to-

gether with the SEQ1 and SEQ2 Busy bits, uniquely identifies the progress or

state of the active sequencer at any point in time.

Table 7–5. Status Bit Values for SEQ_CNTR_n

SEQ_CNTR_n

(read only)

Number of conversions remaining

0000 1

0001 2

0010 3

0011 4

0100 5

0101 6

0110 7

0111 8

1000 9

1001 10

1010 11

1011 12

1100 13

1101 14

1110 15

1111

Bits 7–4 SEQ2-State3 – SEQ2-State0

Reflects the state of SEQ2 sequencer at any point of time. If need be, user can

poll these bits to read “interim” results before an EOS. SEQ2 is irrelevant in

cascaded mode.

Bits 3–0 SEQ1-State3 – SEQ1-State0

Reflects the state of SEQ1 sequencer at any point of time. If need be, user can

poll these bits to read “interim” results before an EOS.