Kontron AdvancedTCA AT8001, Руководство пользователя

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B-6
AT8001 User’s Guide
REFSEL Show the reference that is currently selected.
0: Primary reference
1: Secondary reference
RSV1/ RSV0 Reserved.
B.11 0A0AH: TELCLOCK2 (TELECOM CLOCK OPTION)
Address Action D7 D6 D5 D4 D3 D2 D1 D0
READ
PRI_LOS SEC_LOS HOLDOVER UNLOCK NU DRVCLKA1 NU DRVCLKA0
WRITE
NU NU NU NU NU DRVCLKA1 NU DRVCLKA0
0xA0A
Reset
X X X X X 0 X 0
PRI_LOS Loss of primary reference clock detected.
This bit is high when the primary clock at the input of the PLL (i.e. after PLD mux) is loss.
SEC_LOS Loss of secondary reference clock detected.
This bit is high when the primary clock at the input of the PLL (i.e. after PLD mux) is loss.
HOLDOVER Hold over detected by the PLL.
UNLOCK Unlock detected by the PLL.
DRVCLKA1 Drive transmission clock CLKA for AMC-B2
This bit is forced to 0 when AMC-B2 is absent or unpowered.
DRVCLKA0 Drive transmission clock CLKA for AMC-B1
This bit is forced to 0 when AMC-B2 is absent or unpowered.