Sensoray 626 - Manual (Page 14)

Sensoray Model 626 Instruction Manual 12
9.5 Reading Edge Capture Status Registers
9.5.1 Reading which channels have Captured Edges
Table 9 Reading Captured Edges
Offset Input Channel Number
(Hex)
Register
Name
Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
48 RDCAPFLGA 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
58 RDCAPFLGB 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
68 RDCAPFLGC 47
46 45 44 43 42 41 40 39 38 37 36 35 34 33 32
RDCAPFLGA, B & C are used to determine which, if any, channels have captured edges. A ‘1’ shows
an edge has been captured for the corresponding channel.
9.5.2 Reading the Status of the Interrupt Enable Registers
Table 10 Reading the Status of the Interrupt Enable Registers
Offset Input Channel Number
(Hex)
Register
Name
Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
4A RDINTREGA 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
5A RDINTREGB 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
6A RDINTREGC 47
46 45 44 43 42 41 40 39 38 37 36 35 34 33 32
RDINTREGA, B & C are used to determine which, if any, channels will generate an interrupt on an
edge capture. A ‘1’ shows that the corresponding channel will generate an interrupt on edge capture (if
the channel is enabled).
9.5.3 Reading the Status of the Edge Selection Register
Table 11 Reading the Status of the Edge Selection Registers
Offset Input Channel Number
(Hex)
Register
Name Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
4C RDEDGREGA 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
5C RDEDGREGB 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
6C RDEDGREGC 47
46 45 44 43 42 41 40 39 38 37 36 35 34 33 32
RDEDGREGA, B & C are used to determine which channels will capture positive edges and which will
capture negative edges(when they are enabled). A transition from 0 to 1 is considered a positive edge.