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©2018 Integrated Device Technology, Inc
September 12, 2018
8A3xxxx Family Programming Guide
SYS_DPLL.SYS_DPLL_MODE
Select state machine transition mode.
TRIGGER: Writing to this byte triggers a read and activation in hardware of all the bytes of the system DPLL module.
-
Module: DPLL_CTRL_0
TRIGGER: Every register in this module is a trigger register. In the case of a multibyte register the highest address register byte is the trigger
byte.
Table 249: SYS_DPLL.SYS_DPLL_MODE Bit Field Locations and Descriptions
Offset
Address
(Hex)
SYS_DPLL.SYS_DPLL_MODE Bit Field Locations
D7
D6
D5
D4
D3
D2
D1
D0
01Ch
RESERVED[7:6]
RESERVED[5:3]
STATE_MODE[2:0]
SYS_DPLL.SYS_DPLL_MODE Bit Field Descriptions
Bit Field Name
Field Type Default Value
Description
RESERVED
N/A
-
This field must not be modified from the read value
STATE_MODE[2:0]
R/W
0
System DPLL state machine transition mode.
0 = automatic
1 = force lock
2 = force freerun
3 = force holdover
Table 250: DPLL_CTRL_0 Register Index
Offset
(Hex)
Register Module Base Address: C600h
a
Individual Register Name
Register Description
000h
Reset hitless switching time interval error.
001h
Manual reference mode configuration.
002h
DPLL loop filter damping factor.
003h
DPLL_CTRL_0.DPLL_DECIMATOR_BW_MULT
DPLL loop filter decimator bandwidth multiplier.
004h
DPLL loop filter bandwidth.
006h
DPLL loop filter phase slope limit.
008h
DPLL_CTRL_0.DPLL_PRED0_DAMPING
Predefined configuration 0 loop filter damping factor.
009h
DPLL_CTRL_0.DPLL_PRED0_DECIMATOR_B
W_MULT
Predefined configuration 0 loop filter decimator bandwidth multiplier.
00Ah
Predefined configuration 0 loop filter bandwidth.
00Ch
Predefined configuration 0 loop filter phase slope limit.
00Eh
DPLL_CTRL_0.DPLL_PRED1_DAMPING
Predefined configuration 1 loop filter damping factor.