UG-1673
Rev. 0 | Page 20 of 29
PAIR B
100Ω DIFFERENTIAL;
5 MIL TRACES, 10 MIL SPACING ( 5 / 10 / 5 );
MATCH AND MINIMIZE TRACE LENGTH
PAIR A
100Ω DIFFERENTIAL;
5 MIL TRACES, 10 MIL SPACING ( 5 / 10 / 5 );
MATCH AND MINIMIZE TRACE LENGTH
CONNECTIONS OF TRANSFORMER TO RJ45
ARE CONFIGURED FOR OPTIMUM LAYOUT
0.001µF
20054
DNI
75Ω
HX1260NL
0.001µF
0.
1µ
F
DNI
75Ω
75Ω
0.
1µ
F
5406299-1
75Ω
C4
R5
R4
T1
G
ND3
C2
4
C2
9
R3
R2
C39
P1
SHIELD
CON-MDI_1_P
CON-MDI_0_N
CON-MDI_0_P
MDI_0_P
TCT1
MDI_1_P
TCT0
MCT1
MCT0
TC
T0
TC
T1
MCT1
MCT0
CON-MDI_1_N
MDI_0_N
MDI_1_N
15
14
16
2
3
1
10
9
11
7
8
6
1
8
7
6
5
4
3
2
1
10
9
1
PINS
SHLD
RECEIVE
TRANSMIT
RX+
RXCT
RX–
RD–
RDCT
RD+
TX–
TXCT
TX+
TDCT
TD–
TD+
22009-
038
Figure 38. Magnetics
PLACEHOLDERS FOR ADDITIONAL DECOUPLING
ADP223: MAX VIN = 5.5V
ALONG THE SUPPLY TRACE
ADP223: PLACE VIN AND VOUT CAPACITORS AS CLOSE AS POSSIBLE TO THE PINS
INSERTED
RESISTOR FOOTPRINT CAN BE USED
FOR CURRENT MEASUREMENTS
INSERTED
CHANGE R16 TO 280K FOR VDDIO = 3.3V
CHANGE R16 TO 130K FOR VDDIO = 1.8V
VDDIO DEFAULT IS 2.5V
MAX INPUT VOLTAGE = 5.5V
VOUT1 = AVDD3P3 = 0.5(1 + 280K/50K)
VOUT2 = VDDIO = 2.5V = 0.5(1 + 200K/50K) (DEFAULT)
VOUT2 = VDDIO = 3.3V = 0.5(1 + 280K/50K)
VOUT2 = VDDIO = 1.8V = 0.5(1 + 130K/50K)
1803277
1kΩ
0.01µF
0.01µF
DNI
69157-102HLF
69157-102HLF
0Ω
DNI
4.7µF
50kΩ
10nH
DNI
0Ω
280kΩ
200kΩ
4.7µF
ADP223ACPZ
4.7µF
50kΩ
10nH
4.7µF
0.01µF
DNI
DNI
DNI
VDDIO
AVDD3P3
P4
C48
U4
R52
R67
L3
R65
L1
R11
R12
R16
C44
C47
E2
SUPPLY
C31
EXT_5V
C99
C45
C33
EXT_5V
EXT_5V
AVDD3P3
VDDIO
2
1
2
1
3
2
1B
1A
5
7
6
3
D
A
P
2
1
4
8
21
1
2
1
ADJ1
ADJ2
PAD
VOUT1
VIN
VOUT2
GND
EN2
EN1
22009-
039
Figure 39. Power Supplies