© BECOM Systems 2020
Hardware User Manual - CM-BF527
Last change: 26. March 2019/Version 7
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5.3
Application Example Schematics
5.3.1
RJ45 schematic
The KSZ8041 is connected via the RMII to the processor.
The Rx and Tx pairs should be routed with 100
Ω
differential lines.
Figure 5-2: Schematic for RJ45 connection
Designator
Value
Type
Description
Quantity
X1
RJLBC-060TC1
RJ45 with magnetics
1
R5, R6
220
Ω
Resistor
2
R7
0
Ω
Resistor
1
C1
10 uF
1
V1, V2
USBLC6-2P6
TSV-Diode
2
Table 5-1: Bill of material RJ45
LED_SPEED
LED_ACT
Rx+
Rx-
Tx-
Tx+
REXT
10
G
N
D
1
V
d
d
IO
1
7
G
N
D
0
LED1/SPEED
31
V
d
d
P
LL
2
LED0/WAYEN
30
XO
8
REFCLK / XI
9
RESET
32
MDIO
11
MDC
12
RxD3/PHYAD0
13
RxD2/PHYAD1
14
RxD1/PHYAD2
15
RxD0/DUPLEX
16
Rx_DV/CRSDV/CONFIG2
18
Rx_CLK
19
Rx_ER/ISO
20
Tx_CLK
22
Tx_EN
23
TxD0
24
TxD1
25
TxD2
26
TxD3
27
INT_P
21
COL/CONFIG0
28
CRS/CONFIG1
29
Tx-
6
Tx+
7
Rx-
4
Rx+
5
V
d
d
A
3
KSZ8041NL
U1
3.3V_A_PHY
1
3
2
5
4
6
USBLC6-2P6
V1
1
3
2
5
4
6
USBLC6-2P6
V2
GND
GND
3V3
3V3
3
Tx-
2
Rx-
8
Tx+
1
1
4
1
3
Rx+
7
9
11
10
12
X1
GND
GND
220R
R5
220R
R6
3V3
3V3
0R
R7
GND
Core Module
External Components
106
74
75
107
108
110
72
Rx+
Rx-
Tx-
Tx+
Rx+
Rx-
Tx-
Tx+
100n
C61
1
2
3
4
5
6
7
8
49R9
R1
100n
C62
GND
GND
100n
C10
100R
RJ45 connector with integrated magnetics
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