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©2018 Integrated Device Technology, Inc
September 12, 2018
8A3xxxx Family Programming Guide
DPLL_0.DPLL_CTRL_0
Enable revertive switching, hitless switching and global sync mode.
Table 174: DPLL_0.DPLL_CTRL_0 Bit Field Locations and Descriptions
Offset
Address
(Hex)
DPLL_0.DPLL_CTRL_0 Bit Field Locations
D7
D6
D5
D4
D3
D2
D1
D0
002h
FORCE_LOCK_INPUT[7:3]
GLOBAL_SY
NC_EN[2]
REVERTIVE
_EN[1]
HITLESS_E
N[0]
DPLL_0.DPLL_CTRL_0 Bit Field Descriptions
Bit Field Name
Field Type Default Value
Description
FORCE_LOCK_INPUT[7:3
]
R/W
0
DPLL reference input index when force lock applied.
0x00 = CLK0
0x01 = CLK1
0x02 = CLK2
0x03 = CLK3
0x04 = CLK4
0x05 = CLK5
0x06 = CLK6
0x07 = CLK7
0x08 = CLK8
0x09 = CLK9
0x0A = CLK10
0x0B = CLK11
0x0C = CLK12
0x0D = CLK13
0x0E = CLK14
0x0F = CLK15
0x10 = write-phase input
0x11 = write-frequency input (NA in this mode)
0x12 = XO_DPLL.
GLOBAL_SYNC_EN[2]
R/W
0
Enable global sync trigger to synchronize multiple DPLLs.
When this bit is set to 1, the phase of this DPLL's outputs will be aligned with the
phase of other DPLLs' outputs, whose global_sync_en bit is also set to 1. When
one of the DPLLs with this bit set to 1 requires phase synchronization, all DPLLs
with this bit set to 1 will perform a phase synchronization procedure.
0 = disabled
1 = enabled
REVERTIVE_EN[1]
R/W
0
Enable revertive mode.
0 = disabled
1 = enabled
HITLESS_EN[0]
R/W
0
Enable hitless switch mode.
0 = disabled
1 = enabled