144
©2018 Integrated Device Technology, Inc
September 12, 2018
8A3xxxx Family Programming Guide
DPLL_0.DPLL_CTRL_1
Enable and select feedback clock.
DPLL_0.DPLL_CTRL_2
Configure external feedback and frame or sync pulse.
Table 175: DPLL_0.DPLL_CTRL_1 Bit Field Locations and Descriptions
Offset
Address
(Hex)
DPLL_0.DPLL_CTRL_1 Bit Field Locations
D7
D6
D5
D4
D3
D2
D1
D0
003h
RESERVED[7:5]
FB_SELECT_REF[4:1]
FB_SELECT
_REF_EN[0]
DPLL_0.DPLL_CTRL_1 Bit Field Descriptions
Bit Field Name
Field Type Default Value
Description
RESERVED
N/A
-
This field must not be modified from the read value
FB_SELECT_REF[4:1]
R/W
0
Feedback from other DPLL selected as reference for this DPLL.
Select other DPLL feedback to be used as reference for this DPLL.
0 = fb clk of DPLL 0
1 = fb clk of DPLL 1
2 = fb clk of DPLL 2
3 = fb clk of DPLL 3
4 = fb clk of DPLL 4
5 = fb clk of DPLL 5
6 = fb clk of DPLL 6
7 = fb clk of DPLL 7
8 = fb clk of SYS DPLL
FB_SELECT_REF_EN[0]
R/W
0
Enable selected feedback as reference.
0 = disabled
1 = enabled
Table 176: DPLL_0.DPLL_CTRL_2 Bit Field Locations and Descriptions
Offset
Address
(Hex)
DPLL_0.DPLL_CTRL_2 Bit Field Locations
D7
D6
D5
D4
D3
D2
D1
D0
004h
FRAME_SY
NC_PULSE_
RESYNC_E
N[7]
FRAME_SYNC_MODE[6:5]
EXT_FB_REF_SELECT[4:1]
EXT_FB_EN[
0]