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MPCBL0010 SBC—Telecom Clock
Intel NetStructure
®
MPCBL0010 Single Board Computer
Technical Product Specification October 2006
166 Order Number: 304120
12.4.6 Select Reference Clock
To select the received reference clock from AdvancedMC for AdvancedTCA backplane
CLK3B and CLK3A, use the following:
Functions:
IOCTL_SELECT_RECEIVED_REF_CLK3A
IOCTL_SELECT_RECEIVED_REF_CLK3B
12.4.7 Reference Frequency for PLL
To select the reference frequency that feeds the clocks to the PLL, use the following:
Function:
IOCTL_SELECT_REF_FREQUENCY
12.4.8 Primary/Secondary Redundant Clock
To select the primary or secondary redundant clock, use the following:
Function:
IOCTL_SELECT_REDUNDANT_CLOCK
Table 128. Switchover Mode Values
Name Description Value
PLL_HOLDOVER Use PLL holdover detection 0x40
LOST_CLOCK Use loss of clock signal 0x00
Table 129. Received Reference Clock Values
Name Description Value
AMC_B1 Source from AdvancedMC B1 0x00
AMC_B2 Source from AdvancedMC B2 0x10
Table 130. Reference Frequency PLL Values
Name Description Value
REF_CLK1_8kHz
PLL input clocks = CLK1A and CLK1B
(8 kHz, per AdvancedTCA specification)
0x00
REF_CLK2_19_44MHz
PLL input clocks = CLK2A and CLK2B
(19.44 MHz, per AdvancedTCA specification)
0x02
Table 131. Primary/Secondary Redundant Clock Values
Name Value
PRIMARY_CLOCK 0x00
SECONDARY_CLOCK 0x01