Solartron Mobrey 3595 4C, User Manual

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Programming the 3595 4C Interface card 3595 4C User Manual Part One
3-16
35952350 (CH03/AA)
3.4.10 Setting receive interrupts
The Receive Interrupt Table (Figure 3.7) is intended for use in ‘task programming’. It allows a Host PC, by
setting the relevant bits, to select the data streams for which it is to be interrupted on completion of a
receive operation.
0xCF
0xD0
Bit 7 Bit 0
0xE7
IMP 2 IMP 1
IMP 4
IMP 3
IMP 50 IMP 49
Data Stream 0
Data Stream 1
Data Stream 2
Data Stream 3
Data Stream 0
Data Stream 1
Data Stream 2
Data Stream 3
Figure 3.7: Receive Interrupt Table
Each of the four-bit bytes, into which the table is divided, is assigned to a specific IMP. Within each of
those bytes, each bit is assigned to a specific data stream. When the Host PC sets a bit in this table, the
4C Interface card generates an interrupt either when measurement data is ready in the on-card RAM or
when the card has failed to receive measurement data. An indication of either occurrence is given by the
Data Ready and Receive Data Error bits in the relevant byte of the Receive Table (Section 3.4.9).