ADLINK PCI-7442 - Manual (Page 54)

42 Register Format
Power-up DO Setup/Read Register
When the system enters the power up status, PCI-7442 can enter
the initial procedure which sends out the default initial value to 64-
CH digital outputs. You can configure the power-up default DO val-
ues and store them in the flash memory. With this, the DO goes to
a definite status when the system turns on.
You can program the 64-CH power-up default DO values by
accessing the Power-up DO Setup Register in turn. After access-
ing the last Power-up DO Setup Register (BASE+0x92h), it could
take up to 0.5s to finish writing the procedure to the flash memory.
You may check if the procedure is finish or not by nAction_Ready
flag.
You can read the configured power-up initial DO values stored in
the flash memory by sending out the Read Start command
(BASE+0x8Ch). The read procedure starts in 50 ms. When the
Read Back procedure is ready (nAction_Ready flag), you can read
back the 64-bit Power-up DO Read Back Register in turn.
Address R/W Value Mapping (MSB----LSB)
BASE+0x8Ch W IDO[15...0]
BASE+0x8Eh W IDO[31...16]
BASE+0x90h W IDO[47...32]
BASE+0x92h W IDO[63...48]
Bit value: 0: Output Power MOSFET is OFF. (Initial value)
1: Output Power MOSFET is ON.
Address R/W Value Mapping (MSB----LSB)
BASE+0x8Ch R Read Back Start
BASE+0x8Eh R IDO[15…0]
BASE+0x90h R IDO[31...16]
BASE+0x92h R IDO[47...32]
BASE+0x94h R IDO[63...48]
Bit value: 0: Output Power MOSFET is OFF. (Initial value)
1: Output Power MOSFET is ON.