PIC32MZ Datasheet, PDF (24/30 Pages) Microchip Technology – PIC32MZ Embedded Connectivity with Floating Point Unit Family Starter Kit

FIGURE A-6:
LAN8740A PHY DAUGHTER BOARD SCHEMATICS
+3.3V
VDDA
RXD1
RXD0
CRS_DV
FB1
C3 C4
C5 C7
1.0uF 0.1uF
0.1uF 1.0uF
MODE[2:0] = 111
Default
Place close to U1
R12
33R
±1%
R13
33R
±1%
R11
33R
±1%
+3.3V
RMII
EN
+3.3V
R1 R2 R3
±1% ±1% ±1%
4.7K 4.7K 4.7K
R5
R7
10K
1.5K
MDIO
MDC
RX_ER
R4 R6 R8
±1% ±1% ±1%
4.7K 4.7K 4.7K
GND
PHYAD[2:0] = 000
Default
GND
GND
GND
C1 C2
1.0uF 0.1uF
U1
GND
R14
33R
±1%
TX_EN
TXD0
TXD1
16 _MDIO
17 _MDC
8 _RXD3/PHYAD2
9 _{RXD2/nPME/RMIISEL}
10 _RXD1/MODE1
11 _RXD0/MODE0
26 _RXDV
7 _RXCLK/PHYAD1
13 _{RXER/RXD4/PHYAD0}
TXP ²⁹
TXN ²⁸
RXP ³¹
RXN ³⁰
20 _TXCLK
21 _TXEN
22 _TXD0
23 _TXD1
24 _TXD2
LED1/nINT/nPME/REGOFF ³
25 _TXD3
LED2/nINT/nPME/nINTSEL ²
15 _{COL/CRS_DV/MODE2}
14 _CRS
C8
C9
1.0uF 470pF
GND
TX_P
TX_N
RX_P
RX_N
TXP
TXN
RXP
RXN
+3.3V
LED_LINK
LED_ACT
nRST
CLK_IN
CLK_IN
19 _nRST
5 _XTAL1/CLKIN
4 _XTAL2
nINT/TXER/TXD4 ¹⁸
RBIAS ³²
*SMSC LAN8740
GND
R16
10K
R15
12.1k
±1%
nINT
GND
VDDA
R17 R18 R19 R20
TXP
TXN
RXP
RXN
C10
C12
12pF
12pF
C11
C13
12pF
12pF
For EMI Purposes
(DNP)
GND
J2
C14
0.022uF
GND
VDDA
R21
249R
±1%
EGND
LED_ACT
LED_LINK
REGOFF=0
(Regulator ON)
R22
249R
±1%
3
5
4
7
6
8
9 _NC
10
1000pF 2KV
12
11
Grn
1
2
Yel
J3011G21DNL
J1
J2
J3
J4
J5
J6
J7
J8
SHIELD ¹³
SHIELD ¹⁴
GND
R23
Create EGND copper pour
0R
around RJ-45 Conn
EGND
GND
EGND
TX_EN
TXD0
TXD1
GND
CLK_IN
+3.3V
C6
0.1uF
J1
1
2
3
4
5
6
7
8
9
10
11
12
2 HDR/DB
S9014E-12-ND
13
14
15
RXD1
16
RXD0
17
RX_ER
18
CRS_DV
19
MDC
20
MDIO
21
nINT
22
nRST
23
24
EGND