202
©2018 Integrated Device Technology, Inc
September 12, 2018
8A3xxxx Family Programming Guide
SYS_DPLL.SYS_DPLL_REF_PRIORITY_18
Lower priority index is higher priority.
SYS_DPLL.SYS_DPLL_REF_PRIORITY_17 Bit Field Descriptions
Bit Field Name
Field Type Default Value
Description
PRIORITY_GROUP_NUM
BER[7:6]
R/W
0
Priority group number.
For references in the same priority group, revertive switching is disabled.
PRIORITY_REF[5:1]
R/W
0
Input reference index for priority 17.
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
PRIORITY_EN[0]
R/W
0
Enable reference priority 17.
Enable reference priority 17 for the automatic reference selection.
0 = disabled
1 = enabled
Table 247: SYS_DPLL.SYS_DPLL_REF_PRIORITY_18 Bit Field Locations and Descriptions
Offset
Address
(Hex)
SYS_DPLL.SYS_DPLL_REF_PRIORITY_18 Bit Field Locations
D7
D6
D5
D4
D3
D2
D1
D0
019h
PRIORITY_GROUP_NUMBE
R[7:6]
PRIORITY_REF[5:1]
PRIORITY_E
N[0]