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©2018 Integrated Device Technology, Inc
September 12, 2018
8A3xxxx Family Programming Guide
SYS_DPLL.SYS_DPLL_CTRL_0
Reference switching configuration and forced lock reference selection.
SYS_DPLL.SYS_DPLL_UPDATE_RATE_CFG
System DPLL loop filter update rate configuration.
Table 222: SYS_DPLL.SYS_DPLL_CTRL_0 Bit Field Locations and Descriptions
Offset
Address
(Hex)
SYS_DPLL.SYS_DPLL_CTRL_0 Bit Field Locations
D7
D6
D5
D4
D3
D2
D1
D0
000h
FORCE_LOCK_INPUT[7:3]
RESERVED[
2]
REVERTIVE
_EN[1]
RESERVED[
0]
SYS_DPLL.SYS_DPLL_CTRL_0 Bit Field Descriptions
Bit Field Name
Field Type Default Value
Description
FORCE_LOCK_INPUT[7:3
]
R/W
0
System 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
0x12 = XO_DPLL.
REVERTIVE_EN[1]
R/W
0
Enable revertive mode.
0 = disabled
1 = enabled
RESERVED
N/A
-
This field must not be modified from the read value
Table 223: SYS_DPLL.SYS_DPLL_UPDATE_RATE_CFG Bit Field Locations and Descriptions
Offset
Address
(Hex)
SYS_DPLL.SYS_DPLL_UPDATE_RATE_CFG Bit Field Locations
D7
D6
D5
D4
D3
D2
D1
D0
001h
RESERVED[7:2]
UPDATE_RATE_CFG[1:0]