5 4 3 2 1 LAN8710A MII PHY Customer Evaluation Board Assy 6583 D D PCB Revision C Schematic Revision 1.2 Design Details Board: Assy 6583 Chip: SMSC LAN8710A C Circuit Diagrams utilizing SMSC Products Are Included As A Means Of Illustrating Typical Semiconductor Applications: Consequently Complete Information Sufficient For Construction Purposes Is Not Necessarily Given. The Information Has Been Carefully Checked And Is Believed To Be Entirely Reliable. However, No Responsibility Is Assumed For Inaccuracies. Furthermore, Such Information Does Not Convey To The Purchaser Of The Semiconductor Devices Described Any License Under The Patent Rights Of SMSC Or Others. SMSC Reserves The Right To Make Changes At Any Time In Order To Improve Design And Supply The Best Product Possible. Board Form Factor: MII Assembly: 32 Lead QFN w/ Exposed GND Pad Revision History ITEM BLOCK DIAGRAM Page(s) Title Page LAN8710A / MII / Magnetics Rev 1.0: C 1 2 Initial release, Rev C Rev 1.1: All Pages - Changed from LAN8710 to LAN8710A B B Rev 1.2: C19 changed from 0.1uF to 470pF. A A Title LAN8710A MII PHY Customer Evaluation Board Size Assembly No. Engineer R. W. Date: 5 4 3 2 6583 Thursday, January 06, 2011 1 PCB Rev Schematic Rev C Sheet 1.2 1 of 2 5 4 3 2 1 LAN8710A / Magnetics / MII Connector +5V AVDD +3.3V VR1 1 TP2 C1 1.0uF 16V 10% Test Point - Red +5V 5 2 GND 3 ON/OFF BYPS 4 2.0A/0.050 DCR TP1 LP2992IM5-3.3 SOT23-5 Test Point - Orange +3.3V C4 0.01uF 50V 10% +5V C2 4.7uF 6.3V 10% D C18 0.1uF 16V 10% R12 0 TP5 MII +5V decoupling capacitors to be placed near MII connector C17 10uF 25V 10% LED1_CATHODE XTAL1/CLKIN 1.00M R21 VDDIO U4 VTH = 2.63V Treset = 20 mS 4 VCC 3 MR 1 R44 4.75K 1% 2 RESET C13 30pF 50V 5% nRST 10.0K 1 C15 0.1uF 10V 10% POPULATE 10 LED1/REGOFF LED2/nINTSEL nINT/TXER/TXD4 18 nINT RBIAS 32 RBIAS 1 27 QFN32_5X5MM_EP3P3MM 3 RD+ 5 RXCT 7&8 6 RD- 6 7 NC 8 CHS GND 75 C9 10pF 50V 5% DNP R22 12.1K 1/10W 1% C10 10pF 50V 5% DNP C11 10pF 50V 5% DNP C12 10pF 50V 5% DNP R36 R25 R40 PHYAD[2] = 0 R35 R26 PHYAD[0] = 1 R24 R37 R38 4.75K 1/10W R41 LED2_ANODE LED2_CATHODE R23 0 TP4 1210 3-Pad Resistor Default Population Settings: 1--2 Note: Depopulate R46 when nINT function is enabled. Populate R46 when nINT function is disabled. TXER R46 0 B VDDCR Decoupling Capacitors VDDCR VDDIO TP3 PHYADD0 PHYADD1 PHYADD2 R24 4.75K 1/10W 1% DNP R25 4.75K 1/10W 1% DNP R26 4.75K 1/10W 1% DNP MII/RMII MODE2 MODE1 Test Point - Green VDDCR DNP MODE0 PHYAD[1] = 1 R25 R36 PHYAD[2] = 1 R26 R35 R28 4.75K 1/10W 1% R29 4.75K 1/10W 1% C19 470pF 50V 5% R30 4.75K 1/10W 1% MODE[0] = 0 R31 R30 RXD0/MODE0 MODE[1] = 0 R32 R29 RXD1/MODE1 MODE[2] = 0 R33 R28 COL/CRS_DV/MODE2 MODE[0] = 1 R30 R31 MODE[1] = 1 R29 R32 MODE[2] = 1 R28 R33 (R)MII Select R34 RXD2/RMIISEL nINTSEL A R42 2 LED2/nINTSEL 1 LED2_ANODE 2 3 330 Note: C19 & C20 decoupling capacitors for VDDCR should be placed as close to LAN8710A as possible. MTG2 1 NC LED2_CATHODE Not Supported R40, R41: 2-3 NC A RXCLK/PHYAD1 RXER/RXD4/PHYAD0 3 Plated Hole w_GND R39 4.75K 1/10W R43 C20 1.0uF 16V 10% MTG1 1 RXD3/PHYAD2 3 0 Test Point - Black GND Note: Capacitors C9 through C12 are optional for EMI purposes and are not populated on the LAN8710A evaluation board. These capacitors are required for operation in an EMI constrained environment. LED1_CATHODE 330 LED2/nINTSEL 2 kV YEL LED1_ANODE 3 1 3 75 1000 pF PHY Address / Mode / (R)MII Select Configuration Resistors PHYAD[1] = 0 0 AVDD A C 3 2 C8 0.022uF 50V 10% R37 4.75K 1/10W 1% R36 4.75K 1/10W 1% R35 4.75K 1/10W 1% R34 4.75K 1/10W 1% R33 4.75K 1/10W 1% DNP R32 4.75K 1/10W 1% DNP 3 Plated Hole w_GND R31 4.75K 1/10W 1% DNP Internal 1.2V Reg. Enabled R40, R41: 1-2 Internal 1.2V Reg. Disabled R40, R41: 2-3 R40, R41: 1-2 Interrupt Function Enabled on nINT/TXER/TXD4 Signal R42, R43: 1-2 R42, R43: 2-3 Title Interrupt Function Disabled on nINT/TXER/TXD4 Signal R42, R43: 2-3 R42, R43: 1-2 Size LAN8710A / Magnetics / MII Connector Assembly No. Engineer R. W. Date: 5 C LED2 (Yellow) = SPEED DEPOPULATE REGOFF 2 RXN 30 Configuration Resistor Settings R24 2 2 R45 4.75K 1/10W 1% R37 3 LED1/REGOFF C14 30pF 50V 5% PHYAD[0] = 0 AVDD 1 R20 10.0 1/10W 1% 31 MIC6315-26D2UY SOT-143_BIG1 SIGNAL 1 XTAL2 TD- DNP REGOFF & INTSEL Configuration Resistors LED1/REGOFF RXN RXP GND SPST_MOM B XTAL1/CLKIN 4 2 1 75 RCV 2 3 +3.3V S1 Y1 25.000MHz HC49US RXP nRST 5 4&5 75 LED1 (Green) = LINK/ACT LED1/REGOFF LED2/nINTSEL DNP Reset Generator R47 XTAL2 TXCT A 19 TD+ 4 12 nRST 5173278-2 TXN 28 1 C 100 100 U2 TXCLK TXEN LAN8710A TXD0 TXD1 TXD2 TXD3 COL/CRS_DV/MODE2 CRS TXN 29 RJ45 11 R9 R10 20 21 22 23 24 25 15 14 TXP MTG TXCLK TXEN TXD0 TXD1 TXD2 TXD3 COL/CRS_DV/MODE2 CRS 100 MDIO MDC RXD3/PHYAD2 RXD2/RMIISEL RXD1/MODE1 RXD0/MODE0 RXDV RXCLK/PHYAD1 RXER/RXD4/PHYAD0 MTG R8 16 17 8 9 10 11 26 7 13 16 MDIO MDC RXD3/PHYAD2 RXD2/RMIISEL RXD1/MODE1 RXD0/MODE0 RXDV RXCLK/PHYAD1 RXER/RXD4/PHYAD0 100 100 100 100 100 100 100 GRN XMIT TXP 15 R1 R2 R3 R4 R5 R6 R7 LED1_ANODE R17 0 GND MDIO MDC R_RXD3 R_RXD2 R_RXD1 R_RXD0 R_RXDV R_RXCLK R_RXER TXER R_TXCLK TXEN TXD0 TXD1 TXD2 TXD3 R_COL R_CRS VDD2A VDD1A VDDIO 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 R16 49.9 1/10W 1% GND MII Signal Header +5V MDIO MDC RXD3 RXD2 RXD1 RXD0 RX_DV RX_CLK RX_ER TX_ER TX_CLK TX_EN TXD0 TXD1 TXD2 TXD3 COL CRS +5V GND_EP HEADER_2x14 +5V GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND +5V R15 49.9 1/10W 1% T1 Pulse J0011D01BNL 33 C 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 MDIO R_RXD3 R_RXD1 R_RXDV R_RXER R_TXCLK TXD0 TXD2 R_COL R14 49.9 1/10W 1% C7 0.1uF 16V 10% P1 2 4 6 8 10 12 14 16 18 20 22 24 26 28 R13 49.9 1/10W 1% 14 R11 1.50K 1/10W 1% +5V 12 VDDIO VDDCR 9 VDDIO 13 - 1 3 5 7 9 11 13 15 17 19 21 23 25 27 C3 4.7uF 6.3V 10% 6 + J1 nRST MDC R_RXD2 R_RXD0 R_RXCLK TXER TXEN TXD1 TXD3 R_CRS nINT C6 0.1uF 16V 10% Test Point - Purple VDDIO C16 0.1uF 16V 10% +3.3V C5 0.1uF 16V 10% VDDCR D FB1 OUT Vin 4 3 2 6583 Thursday, January 06, 2011 1 PCB Rev Schematic Rev C Sheet 1.2 2 of 2