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©2018 Integrated Device Technology, Inc
September 12, 2018
8A3xxxx Family Programming Guide
SYS_APLL.SYS_APLL_CP_SS_CURRENT_1
Set the charge pump source switching currents and enable for config.
SYS_APLL.SYS_APLL_CP_SS_CURRENT_2
Set the charge pump source switching currents .
Table 147: SYS_APLL.SYS_APLL_CP_SS_CURRENT_1 Bit Field Locations and Descriptions
Offset
Address
(Hex)
SYS_APLL.SYS_APLL_CP_SS_CURRENT_1 Bit Field Locations
D7
D6
D5
D4
D3
D2
D1
D0
000h
GLOBAL_EN
ABLE[7]
RESERVED[
6]
CP_1_SS_CURRENT[5:3]
CP_2_SS_CURRENT[2:0]
SYS_APLL.SYS_APLL_CP_SS_CURRENT_1 Bit Field Descriptions
Bit Field Name
Field Type Default Value
Description
GLOBAL_ENABLE[7]
R/W
0
0 = disabled,
1 = enabled.
Write '1' to this bit to apply the SCSR charge pump settings. No changes will be
applied while this bit is disabled.
RESERVED
N/A
-
This field must not be modified from the read value
CP_1_SS_CURRENT[5:3]
R/W
0
0x0 = 125uA,
0x3 = 500uA,
0x7 = 1000uA.
Reference current for Charge Pump #1. 125uA steps. For use in 3.3V VDDA
operation. cp_1_ss_c cp_2_ss_c cp_3_ss_c
cp_4_ss_current = total cp current used to set APLL bandwidth.
CP_2_SS_CURRENT[2:0]
R/W
0
0x0 = 125uA,
0x3 = 500uA,
0x7 = 1000uA.
Reference current for Charge Pump #2. 125uA steps. For use in 3.3V VDDA
operation. cp_1_ss_c cp_2_ss_c cp_3_ss_c
cp_4_ss_current = total cp current used to set APLL bandwidth.
Table 148: SYS_APLL.SYS_APLL_CP_SS_CURRENT_2 Bit Field Locations and Descriptions
Offset
Address
(Hex)
SYS_APLL.SYS_APLL_CP_SS_CURRENT_2 Bit Field Locations
D7
D6
D5
D4
D3
D2
D1
D0
001h
RESERVED[7:6]
CP_3_SS_CURRENT[5:3]
CP_4_SS_CURRENT[2:0]