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OCPRF100 MP Server System Technical Product Specification
Revision 1.0
TableBit | Name | I/O | Fixed† | Function |
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7 | SDA | I/O | Y | I2C serial data signal for the IPMB. |
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6 | SCL | I/O | Y | I2C serial clock signal for the IPMB. |
5 | Reserved | - | N | Reserved for future use. |
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4 | SCSI _reset_L | O | N | Reset SCSI controller. If 0, places the 53C80S SCSI chip into |
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| reset. If 1, the SCSI interface chip comes out of reset and oper- |
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| ates normally. |
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3 | SCSI_DRQ | I | N | SCSI DMA Request. Connected to the DRQ signal of the |
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| 53C80S SCSI chip. Allows the microcontroller to use the DMA |
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| transfer capabilities of the SCSI interface chip, which results in |
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| higher performance. |
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2 | Reserved | - | N | Reserved for future use. |
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1 | SDA_Local | I/O | N | Serial data for private I2C connection to temperature sensor. |
0 | SCL_Local | O | N | Serial clock for private I2C connection to temperature sensor. |
Notes:† “Fixed” indicates whether the function/pin is defined by the microcontroller pinout (fixed) or is
P2 is the
P3 provides four
Bit | Name | I/O | Fixed† | Function |
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7 | RD_L | O | Y | Read strobe. Indication from the microcontroller that the current |
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| bus cycle is a read operation. |
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102 |
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