EKF SC1-ALLEGRO, Руководство пользователя

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User Guide • SC1-ALLEGRO •
CompactPCI ® Serial
CPU Board • Intel® i7-3xxx Processor
Board Control and Status Registers
A set of board control and status registers allow to program special features on the SC1-ALLEGRO:
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Assert a full reset
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Control activity of front panel reset and power event button
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Program time-outs and trigger a watchdog
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Get access to two LEDs in the front panel
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Get power fail and watchdog status of last board reset
The register set consists of five registers located on the SMBus at Device ID=0x5c on the following
addresses:
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0xA0: CMD_CTRL0_WR: Write to Control Register 0 (Write-Only)
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0xA1: CMD_CTRL0_RD: Read from Control Register 0 (Read-Only)
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0xB0: CMD_STAT0_WR: Write to Status Register 0 (Write-Clear)
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0xB1: CMD_STAT0_RD: Read from Status Register 0 (Read-Only)
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0xB2: CMD_STAT1_WR: Write to Status Register 1 (Write-Clear)
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0xB3: CMD_STAT1_RD: Read from Status Register 1 (Read-Only)
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0xC1: CMD_PLDREV_RD: Read from PLD Revision Register (Read-Only)
To prevent misfunction accesses to the registers should be done by SMBus “Byte Data” commands.
Further writes to read-only or reads to write-only registers should be omitted.
Write/Read Control Register 0
Write: SMBus Address 0xA0 Default after reset: 0x00
Read: SMBus Address 0xA1
Bit Description CMD_CTRL0
7 GPLED
0=Green part of the front panel LED GP is off (Default)
1=Green part of the front panel LED GP is on
6 FPDIS
0=Enable the front panel handle switch (Default)
1=Disable the front panel handle switch
5 FERP#
0=The front panel handle switch generates a power event (Default)
1=The front panel handle switch generates a system reset
4:3 WDGT0:WDGT1
Maximum Watchdog retrigger time:
0:0
2 sec
1:0 10 sec
0:1 50 sec
1:1 250 sec
2 WDGTRG
Retrigger Watchdog. Any change of this bit will retrigger the watchdog.
After a system reset the watchdog is in an inactive state. The watchdog is armed on the 1
st
edge of this bit.
1 PGLED
0=Red part of the front panel LED PG is off (Default)
1=Red part of the front panel LED PG is blinking
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