Intel Intel NetStructure Single Board Computer, MPCBL0010 - page 110

Intel NetStructure® MPCBL0010 Single Board Computer
October 2006 Technical Product Specification
Order Number: 304120 109
Addressing—MPCBL0010 SBC
Even though authorization is given by the IPMC to drive the clocks to the AdvancedMC
module, no actual clocks are driven if the module is not present, unpowered, or
illpowered. These bits can be set prior to turning on the AdvancedMC module’s power. A
readback will return the state of the bit, but does not reflect the actual clock. In the
case of bad power (12VFault = 1, for example), the clock is not driven even if the
authorization bit is set. On an AdvancedMC module extraction, these bits are
automatically cleared.
PR: CPU present
IERR: CPU internal error
VTT: CPU type required VTT
TRIP: Indicates a thermal trip was detected and the CPU switcher was turned off. This
bit retains its value when the board is turned off, but it is cleared at power-up time.
Prior to the first power up, this bit is always cleared (no special treatment needed for
the first powerup).
HOT: Indicates the CPU pin PROCHOT# is asserted.
MCERR: CPU Machine Check Error. Asserted on various conditions that are BIOS-
dependant
Any Bit: Writing any value to the grab register arms the grab circuit. The grab circuit
captures the next conversion result in about 1 ms.
The analog to digital conversion is a continuous process in the sense that conversion
occurs regardless of the IPMC. Valid data is available every millisecond or so. The IPMC
tells the FPGA in advance that wants a fresh copy of the ADCs reading. Unless the IPMC
requests a fresh copy, the ADC values returned by the FPGA never change.
Table 94. CPU 0 VIDs 18h
Address Action D7 D6 D5 D4 D3 D2 D1 D0
18h
Read NU NU VID5 VID4 VID3 VID2 VID1 VID0
WriteNUNUNUNUNUNUNUNU
PowerUpNUNUNUNUNUNUNUNU
Table 95. CPU 0 Status 19h
Address Action D7 D6 D5 D4 D3 D2 D1 D0
19h
Read NU NU MCERR HOT TRIP VTT IERR PR
WriteNUNUNUNUNUNUNUNU
PowerUpNUNUNUNUNUNUNUNU
Table 96. ADC Grab Control 20h
Address Action D7 D6 D5 D4 D3 D2 D1 D0
20h
Read NU NU NU NU NU NU NU NU
WriteNUNUNUNUNUNUNUNU
PowerUpNUNUNUNUNUNUNUNU