EVB-LAN9252-DIG-IO Datasheet, PDF (26/37 Pages) Microchip Technology – EVB-LAN9252-DIG-IO EtherCAT® DIG I/O User’s Guide

FIGURE B-1:
EVB-LAN9252-DIG-IO SCHEMATIC POWER SUPPLY & RESET
5
4
3
2
D
POWER SUPPLY
1 5V_EXT
SW1
1
TP1
RED
5V
FB1
3 V REGULATOR, 3A
( 3V3 fixed when Rb=470E)
U1
TP2
ORANGE
3V3
2
5V_SW
3
3
2
EN12_1 1 ^VIN
4
VOUT ₅
VOUT_3V3
2A/0.05DCR
R1
0E
ENABLE TRIM
DNP
C1
2
J1
Switch, SPDT, Slide
P/N:1101M2S3CQE2
C2
10uF
25V
C3
3
3_Amp ^GND
R3
R4
3.30K 470E
R4A
33E
C4
C5
0.1uF ^{OKR-T/3-W12-C}
1% 1%
1%
10uF 0.1uF
4.7uF
(Ra) (Rb)
3V3
R2
1K
D1
GRN
C
3V3
RESET Options
3V3
Reset Generator
SW2
R6
10.0K
1/10W
1%
C6
0.1uF
U2
3V3
R5
4.75K
1%
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
3V3
1
2
4
1
NDS355AN_NMOS _D
RST#
B
sw_pb_2P
R7
1/10W
100
1%
MR#
RESET#
3
RESET
R8
1
1K G
Q1
S
U3
2
4
RED
1
2
TPS3125
R9 2.2K
A
C
74LVC1G14
D2
SOT23_5
Threshold = 2.64V
"Reset"
Delay = 180ms
1
D
C
B
A
A
TP3
TP4
BLACK BLACK
Chennai
India
Part Number: LAN9252-DIG-IO-EVB
Page: Power Supply & RST
B ^Size:
Project
Board
Name:^{LAN9252-DIG-IO-EVB} Name: ^{EVB3-9252-DIG-I/O-RevB}
Rev
B
Date: Tuesday, October 21, 2014
Sheet 3 of 9
5
4
3
2
1