ADLINK PCI-7442 - Manual (Page 69)

Register Format 57
4.3 PCI-7444 I/O Registers
Isolated Digital Output/Read Back Registers
The PCI-7444 has 128 isolated digital outputs. These lines are
divided between four output connectors, CN1A, CN1B, CN2A, and
CN2B. They are controlled by eight 16-bit registers. Each digital
output line is controlled by each bit of the eight control registers.
You must send out the corresponding DO output data and send
out the start command in the end. All 128-bit (all channels)/64-bit
(Port 0 or Port 1) DO data is then sent out after receiving the com-
mand (BASE+0x08h, 0x12h, 0x14h). The output device is Open
Drain Power MOSFET Driver.
The Isolated DO Send Out At The Same Time(Port0, Port1, All
Ch.) does not need any register value. You only need to send out
the address (BASE + 0x08h , BASE + 0x12h, BASE + 0x14h) in
Write mode after setting up all 128-bit (all channel) or 64-bit
(port0, port1) channel output data. When the DO back receives
the Start command, the 64-/128-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+0x00h W IDO[15...0]
BASE+0x02h W IDO[31...16]
BASE+0x04h W IDO[47...32]
BASE+0x06h W IDO[63...48]
BASE+0x0Ah W IDO[79...64]
BASE+0x0Ch W IDO[95...80]
BASE+0x0Eh W IDO[111...96]
BASE+0x10h W IDO[127...112]
BASE+0x08h W Port 0 Send Out Start
BASE+0x12h W Port 1 Send Out Start
BASE+0x14h W All Ch. Send Out Start
Bit value: 0: Output PowerMOSFET is OFF. (Initial value)
1: Output PowerMOSFET is ON.