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©2018 Integrated Device Technology, Inc
September 12, 2018
8A3xxxx Family Programming Guide
DPLL_0.DPLL_DCO_INC_DEC_SIZE
Configure frequency step size for GPIO increment/decrement mode.
028h
Fast lock frequency slope limit.
02Ah
Fast lock loop filter bandwidth.
02Ch
Write frequency timer.
02Eh
Write phase timer.
030h
Predefined configuration selection.
031h
DPLL ToD synchronization configuration.
032h
Combo mode slave primary source configuration.
033h
Combo mode slave secondary source configuration.
034h
Slave mode configuration.
035h
Reference selection configuration.
036h
DPLL_0.DPLL_PHASE_MEASUREMENT_CFG
Phase measurement mode configuration.
037h
DPLL operating modes.
a. This register module is instantiated multiple times. This is the base address of the first instantiation of this module. For later instantiations,
use the appropriate module base address.
Table 173: DPLL_0.DPLL_DCO_INC_DEC_SIZE Bit Field Locations and Descriptions
Offset
Address
(Hex)
DPLL_0.DPLL_DCO_INC_DEC_SIZE Bit Field Locations
D7
D6
D5
D4
D3
D2
D1
D0
000h
DCO_INC_DEC_SIZE[7:0]
001h
DCO_INC_DEC_SIZE[15:8]
DPLL_0.DPLL_DCO_INC_DEC_SIZE Bit Field Descriptions
Bit Field Name
Field Type Default Value
Description
DCO_INC_DEC_SIZE[15:
0]
R/W
0
Size of frequency increment/decrement in 0.01 ppb.
Unsigned 16-bit.
0 means no change.
GPIO increment/decrement mode is by setting
GPIO_n.GPIO_CTRL.GPIO_FUNCTION = 0x4 increment / 0x5 decrement.
The DPLL to increment/decrement is configured in
GPIO_n.GPIO_DCO_INC_DEC.DPLL_INDEX.
Table 172: DPLL_0 Register Index
Offset
(Hex)
Register Module Base Address: C3B0h
a
Individual Register Name
Register Description