Schematics
2015
Microchip Technology Inc.
D
S
5
0002403A-p
age 29
FIGURE B-2:
POWER SUPPLY & RST
Reset Generator
POWER SUPPLY
(Rb)
(Ra)
OKR-T/3-W12-C
3 V REGULATOR, 3A
( 3V3 fixed when Rb=503e)
"3
V
3
P
res
ent
"
Note:
1.POR -> Reset to ASIC & SOC (Default)
2.RESET O/P from ASIC -> Reset to EX-PHY (PORT2) & SOC :Only Ethercat sku
3.RESET from SOC (GPIO/RST-O/P) -> Reset to ASIC
4.RESET from Push Botton -> Reset to ASIC & SOC
"Reset"
RESET Options
5V_SW
EN12_1
5V_EXT
3V3
3V3
5V
3V3
3V3
3V3
3V3
RST#
U2
TPS3125
SOT23_5
Threshold = 2.64V
Delay = 180ms
U2
TPS3125
SOT23_5
Threshold = 2.64V
Delay = 180ms
RESET#
1
GN
D
2
RESET
3
MR#
4
VD
D
5
TP2
ORANGE
TP2
ORANGE
D2
Br_Red-RA
D2
Br_Red-RA
1
A
2
C
Q1
NDS355AN_NMOS
Q1
NDS355AN_NMOS
1
G
3
S
2
D
C5
0.1uF
C5
0.1uF
R5
4.75K
1%
R5
4.75K
1%
U1
3_Amp
U1
3_Amp
GND
3
VIN
2
ENABLE
1
TRIM
5
VOUT
4
J1
J1
1
2
3
D1
GRN
D1
GRN
1
A
2
C
TP9
BLACK
TP9
BLACK
R1
0
R1
0
TP8
BLACK
TP8
BLACK
C6
0.1uF
C6
0.1uF
FB1
2A/0.05DCR
FB1
2A/0.05DCR
R4A
33E
1%
R4A
33E
1%
C2
10uF
25V
C2
10uF
25V
C1
4.7uF
DNP
C1
4.7uF
DNP
R3
3.30K
1%
R3
3.30K
1%
TP1
RED
TP1
RED
R6
10.0K
1/10W
1%
R6
10.0K
1/10W
1%
1
2
C4
10uF
C4
10uF
SW2
sw_pb_2P
SW2
sw_pb_2P
R7
100
1/10W
1%
R7
100
1/10W
1%
1
2
R8
1K
R8
1K
C3
0.1uF
C3
0.1uF
R9
2.2K
R9
2.2K
U3
74LVC1G14
U3
74LVC1G14
2
4
5
3
1
R2
1K
R2
1K
SW1
P/N:1101M2S3CQE2
Switch, SPDT, Slide
SW1
P/N:1101M2S3CQE2
Switch, SPDT, Slide
2
3
1
R4
470E
1%
R4
470E
1%