MPCBL0010 SBC—Telecom Clock

Table 134. Hardware Reset Values

Name

Description

Value

 

 

 

RESET_ON

Reset asserted

0x00

 

 

 

RESET_OFF

Reset deasserted

0x02

 

 

 

12.4.13Read Alarm States

To read alarms state of the telecom clock, use the following:

Function:

IOCTL_READ_ALARMS

Table 135. Alarm State Values

Bit

Description

Define Bit Mask

 

 

 

0–3

None

None

 

 

 

4

Unlock detected

UNLOCK_MASK

 

 

 

5

Hold over detected. HOLDOVER_MASK

Hold over detected. HOLDOVER_MASK

 

 

 

6

Loss of secondary reference clock detected

SEC_LOST_MASK

 

 

 

7

Loss of primary reference clock detected.

PRI_LOST_MASK

 

 

 

12.4.14Read New Events

To read all new events that occurred since the last read, use the following:

Function:

IOCTL_READ_EVENTS

Table 136. New Event Values

Bit

Description

Define Bit Mask

 

 

 

0

Loss of primary and secondary clocks

EVENT_LOST_CLOCKS

 

 

 

1

Primary clock is gone

EVENT_LOST_PRIMARY_CLOCK

 

 

 

2

Primary clock is back

EVENT_PRIMARY_CLOCK_BACK

 

 

 

3

Secondary clock is gone

EVENT_LOST_SECONDARY_CLOCK

 

 

 

4

Secondary clock is back

EVENT_SECONDARY_CLOCK_BACK

 

 

 

5

PLL in holdover

EVENT_PLL_HOLDOVER

 

 

 

6

Switchover to primary done

EVENT_SWITCHOVER_PRIMARY

 

 

 

7

Switchover to secondary done

EVENT_SWITCHOVER_SECONDARY

 

 

 

8

End of holdover condition

EVENT_END_HOLDOVER

 

 

 

9

PLL lost synchronization

EVENT_PLL_LOST_SYNC

 

 

 

10

PLL synchronized

EVENT_PLL_SYNC

 

 

 

Intel NetStructure® MPCBL0010 Single Board Computer

 

Technical Product Specification

October 2006

168

Order Number: 304120

Page 169
Image 169
Intel Intel NetStructure Single Board Computer Read Alarm States, Read New Events, Hardware Reset Values, New Event Values