ADLINK cPCI-6208V - Manual (Page 28)

20
•
Registers
3.3 Analog Output Status Register
The DAC uses a series bus architecture hence it will take time for digital
value to be sent out. The data transfer rate for every DA data write takes
2.2
µ
s, therefore the software driver must wait 2.2
µ
s before sending any
other data to any analog output port. While the DA value is sending, the
Data_Send bit is ‘H’. The software driver should check this bit before
writing any data to the output port. This register is read only.
Offset Address D16~D1 D0
0x00 X Data_Send
3.4 Digital Output Register
D0~D3 is the digital output signal written to the output channels. D4~D7
are don’t cares.
Offset Address D7 D6 D5 D4 D3 D2 D1 D0
0x40 X X X X DO3 DO2 DO1 DO0
3.5 Digital Input Register
D4~D7 is digital input signal from CN1.
D0~D3 is read back signal from digital output channel.
Offset Address D7 D6 D5 D4 D3 D2 D1 D0
0x40 DI3 DI2 DI1 DI0 DO3 DO2 DO1 DO0