OPTO 22 PCI-AC51, User Manual

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POWERUP CONDITIONS
PCI-AC51 User’s Guide
40
Powerup Conditions
An X indicates that data is ignored.
Controlling the Reset Line
Controlling the Reset Line Using the Pamux Driver
When using the Pamux driver, it is necessary to tell the driver how the reset level is configured on
the brains. This is done as part of the GetCard() function. Use one of the following values:
• eResetLevel.BrainsSetForResetActiveLow
• eResetLevel.BrainsSetForResetActiveHigh
You will then be able to reset the brains in the system or take the brains out of reset by using the
following functions:
• ResetBrains()
– Be sure to keep the brains in reset for at least 150 mSec to ensure all brains properly reset.
• ReturnToNormalAfterReset()
You can also reset the brains in the system and take the brains back out of reset using a single
function, which does a 150 mSec rest:
• ResetBrainsAndReturnToNormal()
Controlling the Reset Line When Not Using the Pamux Driver
Bit 0 of the Reset Control Register on the PCI-AC51 is used to control the reset line.
• When bit 0 is set to 0, the reset line will be HIGH and LED 1 will be ON.
• When bit 0 is set to 1, the reset line will be LOW and LED 1 will be OFF.
The reset line must be in the appropriate state (depending on the reset configuration on the brains)
for a minimum of 250 mSec to ensure all brains reset.
Offset Direction Direction Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
0x00 R/W Reset Control Register X X X X X X X 0
0x01 R/W Bank Address Register X X X X X X X X
0x02 R/W Data Register X X X X X X X X
0x04 R Status Register X 0 0 0 0 X X 0
0x05 R Switch Register X X S6 S5 S4 S3 S2 S1