5 4 3 2 KSZ8851SNL (32-pin) Demo Board Black Diagram REVISION HISTORY DATE: Headers 5x2 D RJ45 04/21/10 Reset T KSZ8851SNL STATUS LEDs Power +1.8V +2.5V +3.3V EEPROM AT93C46 Crystal 25 MHz C C KSZ8851SNL Demo Board with SPI Interface T LED3 U3 (MIC5209YM) Header 5x2 JP 2/3 U1 KSZ8851SNL Crystal 1.1 LED2 JP 4/5/6 RJ-45 Removed JP3 for EESK strapping option Add JP3 for connection between VDD_IO and 1.8V (if VDD_IO is 1.8V) Changed the LED pulled up to 3.3V Add 4.7K pull up on SO pin Reset B LED1 1.0 1st Demo Board Design MIC5209YM x 2 DEMO BOARD PLACEMENT U2 (EEPROM) REVISION DESCRIPTION D 12/07/07 LAN1 1 B Table of Contents Page 1: Revision History & Block Diagram Page 2: KSZ8851SNL 32-pin Ethernet Controller Chip 2.25" U4 (MIC5209YM) A A 3.75" MICREL SEMICONDUCTOR Title KSZ8851SNL DEMO BOARD MICREL SEMICONDUCTOR CONFIDENTIAL 5 4 3 2 Size B Document Number Block and Revision History Date: Wednesday, April 21, 2010 Rev 1.1 Sheet 1 1 of 2 5 4 TP1 1.8A VDD TP2 FB1 1 C1 + 0.1uF D VDD_IO 2 TP3 C5 1.8V 0.1uF 2 1 FBEAD C6 1.8A 3.3VA 1.8V VDD_IO FB3 1 C4 + 1 3.3V FB2 C3 FBEAD C2 2 VDD_IO 3.3VA + C7 C9 1 JP3 2 FBEAD C8 + C10 C11 2 JP3 -> ON: VDD_IO=1.8V; OFF: VDD_IO=2.5/3.3V C12 0.1uF 0.01uF 4.7uF VDD D 4.7uF 0.1uF 0.01uF 0.1uF 0.1uF 4.7uF R1 4.7uF 3.3VA T1 R29 R4 49.9 0 C13 0.1uF 16 11 RXP1 RXM 12 RXM1 RXP 28 SCLK TXP 14 TXP1 33 31 SI TXM 15 TXM1 33 26 CSN 27 SO R11 R12 33 VDD R6 33 R8 C VDD_A3.3 HEADER 5X2 9 U1 25 30 Series resistors 33 ohm are not required if the CPU is driving the SPI interface to KSZ8851M at the same board VDD_IO VDD_IO GND SCLK SI CSN SO 2 4 6 8 10 VDD_A1.8 1 3 5 7 9 49.9 VDD_CO1.8 VDD_D1.8 5.0V_IN RSTN PME INTRN GND 4.7K 5 23 JP1 R14 8 9 RX1P 7 10 R5 6 11 RX1M 3 14 TX1P 2 15 R7 1 16 TX1M C15 KSZ8851SNL INTRN LED2 220 R20 2 10K 33 2 2 R21 PME RSTN + C18 10uF LED0 LED1 1 32 LED0 LED1 EECS EESK EED_IO 10 7 6 EECS EESK EED_IO ISET 17 R22 X1 20 X2 21 R13 49.9 R15 49.9 Vin_5.0V C23 47uF 0.1uF 1 EN C29 + 3 3 ADJ 4 1 2 3 4 C21 22PF C26 R27 470pF 2.49K C25 10uF 1 CS SK DI DO VCC NC ORG GND 8 7 6 5 2 U5 GND VDD 4 2.46K R31 5.54K R32 1 JP4 2 3.3V 1 JP5 2 2.5V 1 JP6 2 1.8V VDD_IO Option C30 R33 470pF 2.49K 2 1 JP2 2 R28 6 RXM1 GND VR D2 5 3.3VA . . 2 RX1M . 2 TX1M GBLC03C_0 D3 TX1P 1 4.7K TXP1 3 Strapping Options: . . 4 TXM1 . GBLC03C_0 SRV05-4 JP2 (EED_IO) -> ON: EEPROM present; OFF: EEPROM not present ESD protection is required for POE application (Parts are not designed on this demo board) C27 C28 + TANT ADJ 5 6 7 8 GND GND GND GND EN R30 . ON: EEPROM present U4 1.50K B . RX1P 1 VDD is 3.3V if only JP4 is ON VDD is 2.5V if only JP5 is ON VDD is 1.8V if only JP6 is ON MIC5209YM 1 Place SIGNAL_GND return of this cap close to SIGNAL_GND at 5V input power to board 0.1uF VDD A CHASSIS_GND 220 R26 Vin_5.0V 3 SIGNAL_GND C19 Power 3.3V 0.1uF (red LED) VOUT = 1.24 X [ 1 + ( 2.49k/ 1.5K ) ] OUT 1000pF / 2kV LED3 1.50K C24 + EED_IO IN 1000pF / 2kV C17 LINK/ACT LINK VDD U2 RXP1 1 R25 22uF 2 P1LED0 (LINK=LED ON) (ACT= LED Blink) (100BT=LED ON) AT93C46 SO8 OUT TANT FBEAD C22 + IN GND GND GND GND 2 4 LEDSEL0 P1LED1 (bit9 in CGCR) 0 100BT 1 ACT LEDx2 Green LEDs MIC5209YM 2 1 C 3.3V 5 6 7 8 TANT 1 2 C16 3.01K (1%) U3 FB4 B Digikey 399-3443-1-ND 1808 3.3V LED1 220 R16 220 R18 Y1 C20 22PF 5.0V_IN TP4 75 10uF 25MHZ Crystal 8 13 18 19 R23 DGND DGND DGND DGND 33 Reset 1 3 AGND AGND AGND PME ON (green LED) 4 22 24 29 S1 2 4 1 R10 75 0.1uF R19 1N4148 R9 Pulse H1102 R24 R17 D1 1 2 3 4 5 6 7 8 75 0 1 3 75 C14 + 3.3V 33 J1 RJ-45 Jack 10 9 R3 4.7K R2 4.7K 5.0V_IN CHASSIS_GND 1.8V 3 A 10uF 0.1uF MICREL SEMICONDUCTOR Title KSZ8851SNL DEMO BOARD 5 4 3 2 Size B Document Number KSZ8851SNL Date: Thursday, April 22, 2010 Rev 1.1 Sheet 1 2 of 2