ADLINK Technology PCIe-7256, Manual, Page: 25 / 40

Register Format 15
PCIe-7256
3.4 Isolated Digital Input Register
Status of the 16 isolated input channels can be read from the iso-
lated input register. Each bit corresponds to each channel, with bit
value of 1 indicating input logic is high and 0 low.
Address: BASE + 0x04
Attribute: Read
DIx: isolated digital input channel x, x=0~15
1: input voltage is high
0: input voltage is low
3.5 COS Setup Register
The PCIe-7256 provides COS (Change-of-State) interrupt function
on any one digital input channel, enabling monitoring of input
channel status. Enabling the COS Setup registers generates an
interrupt when the corresponding channel changes state, whether
rising edge signal or falling edge signal.
Address: BASE + 0x06
Attribute: Write
COS SETx: change-of-state setup of DI channel x, x=0 ~15
1: enables COS interrupt
0: disables COS interrupt
7 6 5 4 3 2 1 0
DI7 DI6 DI5 DI4 DI3 DI2 DI1 DI0
15 14 13 12 11 10 9 8
DI15 DI14 DI13 DI12 DI11 DI10 DI9 DI8
7 6 5 4 3 2 1 0
COS COS COS COS COS COS COS COS
SET7 SET6 SET5 SET4 SET3 SET2 SET1 SET0
15 14 13 12 11 10 9 8
COS COS COS COS COS COS COS COS
SET15 SET14 SET13 SET12 SET11 SET10 SET9 SET8