ADLINK PCI-7442 - Manual (Page 52)

40 Register Format
Isolated Digital Output and Read Back Registers
There are 64 isolated digital outputs on each PCI-7442 board.
These lines are divided between two output connectors: CN2A
and CN2B. These are controlled by four 16-bit registers in bank2.
Each digital output line is controlled by each bit of the four control
registers. You must send out the corresponding DO output data,
then send out the start command to bank2 to complete the pro-
cess. The 64-bit DO data will then be sent out at the same time.
The output device type is Open Drain Power MOSFET driver.
DO Send Out Start does not need any register value. You only
need to send out the address (BASE + 0x88h) in Write mode after
setting up all 64-bit channel output data. When the back2 receives
the Start command, the 64-bit DO data is sent out at the same
time. You can check if the DO send procedure is finished by get
nDO_SendReady flag status.
Address R/W Value Mapping (MSB----LSB)
BASE+0x80h W IDO[15…0]
BASE+0x82h W IDO[31...16]
BASE+0x84h W IDO[47...32]
BASE+0x86h W IDO[63...48]
BASE+0x88h W Send Out Start
Bit value: 0: Output Power MOSFET is OFF. (Initial value)
1: Output Power MOSFET is ON.