EVB-LAN9252 Datasheet, PDF (43/55 Pages) Microchip Technology – EVB-LAN9252-HBI-SPI-SQI-GPIO EtherCAT® HBI/SPI+GPIO

FIGURE B-1:
EVB-LAN9252-HBI-SPI-SQI-GPIO SCHEMATIC POWER SUPPLY & RESET
5
4
3
2
1
D
POWER SUPPLY
D
TP1
RED
3 V REGULATOR, 3A
( 3V3 fixed when Rb=470E)
TP2
ORANGE
5V
SW1
U1
3V3
1 5V_EXT 1
FB1
3
2
J1
2
5V_SW
2
4
3
EN12_1 1 ^VIN
VOUT ₅
Switch, SPDT, Slide
P/N:1101M2S3CQE2
2A/0.05DCR
R1 0E
C2
10uF
25V
ENABLE TRIM
C3
3
3_Amp ^GND
R3
R4
3.30K 470E
R4A
33E
0.1uF OKR-T/3-W12-C
1%
1%
1%
(Ra) (Rb)
C4
C5
10uF 0.1uF
DNP
C1
4.7uF
3V3
R2
1K
D1
GRN
C
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#
sw_pb_2P
R7
1/10W
100
1%
MR#
RESET#
3
RESET
R8
1
1K ^G
Q1
S
U3
2
4
Br_Red-RA
1
2
B
TPS3125
A
C
B
74LVC1G14 ^R9
2.2K
D2
SOT23_5
Threshold = 2.64V
"Reset"
Delay = 180ms
A
A
TP3
TP4
BLACK BLACK
Chennai
India
Part Number: /$1+%, 63,*3,2(9% Page: Power Supply & RST
B ^Size:
Project
Board
Rev
B ^{Name: /$1+%, 63,*3,2(9% Name: (9%+%, 63,*3,25HY%}
Date: Monday, December 08, 2014
Sheet 3 of 10
5
4
3
2
1