Intel 82577/82578 Embedded Gigabit Ethernet Controller Reference Schematic (Rev 1.4)
To replace 82577 with 82578:
Place MDI Termination close to the PHY
R12049.9
NO_STUFF
C94 0.1uf NO_STUFF
R12149.9NO_STUFF R12249.9
NO_STUFF
C95 0.1uf NO_STUFF
R12349.9NO_STUFF R12449.9
NO_STUFF
C96 0.1uf NO_STUFF
R12549.9NO_STUFF R12649.9
NO_STUFF
C97 0.1uf NO_STUFF
R12749.9NO_STUFF
* If connecting to PCIECLKRQ[1:2]#, the CLK_REQ_N pull-up resistor should be connected to +3.3V_S.
USE Intel® 5 Series Express Chipset PCIe REF CLK 1 or 2
R96 0
R128 0
+3.3V_LAN
Q4 BCP69/SOT NO_STUFF
C64 490pf NO_STUFF PCIE MDI
SMBUS
JTAGLED
EU3
82577LM/LC RSVD_VCC3P3_11 RSVD_VCC3P3_22 LAN_DISABLE_N 3
VDD3P3_OUT4 VDD3P3_IN5 VCT6
CTRL_1P07 VDD1P0_88 XTAL_OUT
9 XTAL_IN 10
VDD1P0_1111
RBIAS 12
MDI_PLUS013 MDI_MINUS014
VDD3P3_1515
VDD1P0_1616 MDI_PLUS117 MDI_MINUS118
VDD3P3_1919 MDI_PLUS220 MDI_MINUS221
VDD1P0_2222 MDI_PLUS323 MDI_MINUS324
25LED2 LED0 26 27LED1
SMB_CLK 28
VDD3P3_2929
TEST_EN 30
SMB_DATA 31
JTAG_TDI 32
JTAG_TMS 33JTAG_TDO 34
JTAG_TCK 35
PE_RST_N 36
VDD1P0_3737 PETp
38 39PETn
VDD1P0_4040 41PERp
42PERn
VDD1P0_4343 PE_CLKP
44 PE_CLKN 45
VDD1P0_4646 VDD1P0_4747 CLK_REQ_N
48
VSS_EPAD49 R37
10K
R670
R68 0
R97 0
R98 10K
C53 10uf R99
10K NO_STUFF
C54 0.1uf R100
1K R101 3.01K +3.3V_A
C9 0.1uf
Place C9, C10, R117, and R118 close to the PHY
VDD1P0 C10
0.1uf
C80 490pf NO_STUFF
R1024.99KNO_STUFF
Place Optional EMI Suppression Caps close to the LEDs
+5.0V_A C81
0.01uf NO_STUFF
LED1_R +3.3V_LAN
LAN_DISABLE_N
R103 0
Optional TVS Device
PCIECLKRQ[0:7]#
LED2_R
Place 1uf cap on VCT close to the magnetics Place C88, C89, R68,
and R97 close to the Intel® 5 Series Express Chipset
R104 0
0805
+3.3V
FET Switch
- Populate the MDI termination sites
- Replace RBIAS 3.01K Ohm resistor with 2.37K Ohm resistor.
- Use the BCP-69 and its associated circuitry for 1.2V power (the Intel® 5 Series Express Chipset 1.05V power must not be used for the 82578 (see schematic checklist).
- Remove series 0 Ohm resistor on CLK_REQ_N (pin 48) - Populate series 0 Ohm resistor on VCT (pin 6) - Replace series 10pf capcitor on XTAL_OUT (pin 9) with a zero Ohm resistor
- Change the crystal load capacitors from 33pf to 27pf.
PLTRST#
Y 4 XM/SM C26
33pf
C27 33pf
LED2_LOM R105 330 R106
2.2K R107 2.2K +3.3V_A
R108 0
0805
R109 0
NO_STUFF C82
10pf LED2
+3.3V_A LED1
LED0
R1100
0805 NO_STUFF PERp[1:8]
PERn[1:8]
LED0_LOM R111 330LED0_R
R112 0
0805 NO_STUFF
MDI3N_LOM
C83 490pF NO_STUFF
SLP_LAN#
SML0CLK
R113 10K NO_STUFF SML0DATA
C84 4.7uf NO_STUFF
C85 4.7uf NO_STUFF +3.3V_LAN
U11
RClamp3304N NO_STUFF
VCC5 1I0 9I1 3I2 I3 7
GND11 NC02 NC14 NC26 NC38 NC410
LAN_PHY _PWR_CTRL
C86 10uf NO_STUFF
C87 0.1uf NO_STUFF R1153.01K R1163.01K
U12
RClamp3304N NO_STUFF
VCC5 1I0 9I1 I2 3 7I3
GND11 NC02 NC14 NC26 NC38 NC410
R117 0
R118 0
C88
0.1uf C89
0.1uf PETp[1:8]
PETn[1:8]
+3.3V_LAN
+3.3V_LAN
MDI0N_LOM MDI1P_LOM
R119 10K NO_STUFF
MDI1N_LOM
TYPICAL LED Configuration C90
10uf C91 0.1uf
C92 1uf
MDI2P_LOM +3.3V_ML
MDI2N_LOM
+3.3V_ML
SLP_LAN# Control for PHY 3.3V and 1.1V Power
PCH_V1P1_L +3.3V_LAN
CLKOUT_PCIE[0:7]P
MDI3P_LOM CLKOUT_PCIE[0:7]N
MDI0P_LOM
PCH_V1P1_L
U14
Pulse JW0A2P019DNL 10P1_P
P1_M 11
12P2_P P2_M 13 14P3_P 15P3_M P4_P 16 17P4_M
19LED1 20LED2 21LED3 22LED4 9VCT
SHLD123 SHLD224 SHLD325SHLD426
Optional TVS Device PCIe Rx and Tx Series Caps and Resistors
Integrated Magnetics Assembly
Place optional TVS
devices close to the integrated magnetics module.
NOTE: This placement guidance of the capacitors and resistors is done to align with the PCIe 1.0 specification.
Intel® 5 Series Express Chipset 1.1V Switching Voltage Regulator
+3.3V_LAN VCT
C93 1uf
LED1_LOM C98
1uf NO STUFF
R114 0
NO_STUFF
