21

SCDCT1611 Rev A

6

POLL CONT

Poll Operation Continue (Polling Mode only)

When set polling operation will continue with next

command in command stack.

When Not Set, polling operation will terminate after transaction is complete.

Last transfer in polling sequence must have this bit cleared.

0 = Not Set

1 = Set

7 - 15

MASK BITS

Returned Status Word Bit Masks

1 = Masked

0 = Not Masked

When a non masked bit in the returned status word(s) is set the transaction is

declared not valid.

Reg. Bit

Name

Definition

Bit

Status Bit

7

Terminal Flag

8

Dynamic Bus Control Acceptance

9

Subsystem Flag

10

Busy Bit *

11

Broadcast Command Received

12

Reserved Bits (any or all of 3)

13

Service Request Bit

14

Instrumentation Bit

15

Message Error Bit

* Note: Setting the busy bit mask will not mask a busy

response (i.e. declare it valid). When data is not

returned, in response to a transmit command.

Transaction Word Register con’t