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©2018 Integrated Device Technology, Inc
September 12, 2018
8A3xxxx Family Programming Guide
STATUS.DPLL_SYS_REF_STAT
Indicates which reference is currently selected for tracking.
STATUS.DPLL7_REF_STAT Bit Field Descriptions
Bit Field Name
Field Type Default Value
Description
RESERVED
N/A
-
This field must not be modified from the read value
DPLL7_INPUT[4:0]
R/O
0
Current reference input for DPLL 7.
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
0x12 = XO_DPLL
0x1F = no reference
Table 66: STATUS.DPLL_SYS_REF_STAT Bit Field Locations and Descriptions
Offset
Address
(Hex)
STATUS.DPLL_SYS_REF_STAT Bit Field Locations
D7
D6
D5
D4
D3
D2
D1
D0
02Ah
RESERVED[7:5]
DPLL_SYS_INPUT[4:0]