TIDA-010046
PD Side Board
Clock Source
Status LEDs
MSP430
Pin Headers
(MAC)
DP83825
10/100MBPS
ETH PHY
Internal Loop-Back
External Loop-
Back
DP83825
10/100MBPS
ETH PHY
DP83822
10/100MBPS
ETH PHY
RMII
RMII
TIDA-010046
PSE Side Board
Ethernet
Cable
R
J
4
5
x
x
x
x
x
MSP430
x
x
x
x
x
Power + Data Out
ESD
Diode
Array
ESD
Diode
Array
ESD
Diode
Array
ESD
Diode
Array
TVS
Diode
Array
TVS
Diode
Array
R
J
4
5
ESD
Diode
Array
ESD
Diode
Array
Clock Source
Status LEDs
Status LEDs
TPS23861
PSE
TPS7A4001 LDO
(48 V to 3.3 V)
LP5907 LDO
(5 V to 3.3 V)
LP5907 LDO
(5 V to 3.3 V)
TPS7A26 LDO
(12 V to 3.3 V)
TPS2121
Power MUX
Isolation
Barrier
Isolation
Barrier
Isolation Barrier
PRBS ON
48 V
RTN
TVS
Diode
Array
MDC
MDIO
MDIO
MDC
0
…
F
5 V
LM5160
Iso. Fly-
%XFNŒ
(12 V to 3.6 V)
+12V_IN
LM3478
Boost DC/DC
(12 V to 48 V)
+48V
TVS
Diode
Array
TVS
Diode
Array
+48 V
TVS
Diode
Array
RTN
Power
R
J
4
5
TPS23755
Powered Device (PD) with
Integrated DC/DC
12 V_PoE
+12V_IN
+12V_OUT
3.3 V for ETH PHY & MSP
MDIO
MDC
3.3 V
for
MSP430
3.3 V
for ETH
PHYs
USB
USB
Hardware, Software, Testing Requirements, and Test Results
28
TIDUES1A – October 2019 – Revised February 2020
Copyright © 2019–2020, Texas Instruments Incorporated
EMC Compliant 10/100-Mbps Ethernet PHY Reference Design With IEEE
802.3at Type-1 (
≤
12.95 W) PoE-PD
3.2
Testing and Results
This section provides details of the different functional, performance, and EMC tests performed.
3.2.1
Test Setup
Figure 27. Functional Test Setup of TIDA-010046
