990FXA-UD5
990FXA
UD5 Rev
R 1.0
10
Power Sequence
Edit by：JEFF.KO
990FXA-UD5 Power Sequence
11
13
14
14.318MHz
318MH
SPI BIOS
RTM880T-792/S
CPU_PG_SB
PWO
OK
CIRCUIT
─AT
TX_PSON
9
＊
CIRCUIT
6 5
24
FET
PCIE X16_1,2
7
-PWRBTSW
13
─ATX_PSON9
88SE9172
21
POWER
BUTTON
1
PWOK
PCIE X1
RTL8111E
5VSB
ATX
POWER
Core power planes
10
System
Voltage
y
g
EJ168
DDR15V,DDRVTT,VCC_SB,NB_VCC
VCC18,VDDA25,VCC12_HT
L0_CLKOUT_H/L[0;1] , L0_CTLOUT_H/L[0;1]
19
NB_PWROK
VCC18 , NB
NB_VCC,
VCC, VCC12
VCC12_HT
HT
VCC3,
990FX
L0_CADOUT_H/L[0;15]
27
L0_CLKIN_H/L[0;1] , L0_CTLIN_H/L[0;1]
L0_CADIN_H/L[0;15]
PWM
25VDUAL FET
PCIE X4_1,2
CIRCUIT
CIRCUIT
14
23
IT8720F
IT8 20F
CIRCUIT
PWM_P
PWRGD
16
5VDUAL
SB_PWROK
VT6308P
33VDUAL
VCC_SB, VCC3
RTCVDD,VCC18
FET
RT9018B
28AD{0;31]
SB950
5
3
3VDUAL_SB
-PPCIRST
26
＊
17
NB
B_VCC_EN
SB
B_VCC_EN
C
CPUVDD_EN
N
CIRCUIT
3VDUAL_SB,
VCC11_DUAL
6 29 8
4
VCC11_DUAL
-A
A_RST
CIRCUIT
20
-P
PSOUT
6
32.768KHz
-RSMRST
18 SB_PWROK
-CPURST
25
12
CIRCUIT
25MHz
30
22 CPU_PWRGD
15 VCORE_NB & VCORE
1
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VCORE,VCORE_NB,VCC12_HT
AM3+
DDR15V,VDDA25,COREFB+,
COREFB-,CPU_M_VREF,HT_12B