OCPRF100 MP Server System Technical Product Specification
Revision 1.0
To switch between the SMC and FPC connection of COM2, both signals should be deasserted before either signal is asserted.
When main power is off, the COM2_TO_SIO_EN signal should never be asserted.
10.2.10.7 Transmit and SMC/Front Panel Connection Control
The FPC’s interrupt 2 input is logically the same signal as the signal connected to the FPC’s RXD pin. The description in this section, therefore, applies to both signals.
The FPC’s TXD pin drives both the COM2’s SOUT_TTL_COM2 signal and the ICMB’s SOUT_TTL_ICMB signal.
10.2.10.8 COM2 Data Carrier Detect (DCD) Input Signal
COM2's data carrier detect (DCD) input is availabe as signal name DCD_TTL_FP. This input is available to the firmware at all times, regardless of the states of any ICMB and COM2 control sig- nals. This signal is a direct pass through from the COM2 port. The memory map location is described in Section Memory Maps Memory Maps.
10.2.11 Front Panel Push Buttons
The OCPRF100 front panel has three
The power switch is available to the FPC and is described in Section Front Panel Power Switch.
The reset switch is available to the FPC and is described in Section Resetting the FPC.
10.2.11.1 Switch Debounce
Table
Table
| Mininum (milli- |
| Maximum |
Event | seconds) | Typical | (milliseconds) |
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|
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Switch Press Ramp | 0 | 20 | 200 |
|
|
|
|
Switch Release Ramp | 0 | 12 | 150 |
|
|
|
|
Required switch cycle duration detection by firmware | 50† | 20 | Infinity |
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|
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129