Fast 100 Mbps Ethernet PICtail Plus Daughter Board Overview The Fast 100 Mbps Ethernet PICtail Plus Daughter Board (AC164132) is an Ethernet demonstration board for evaluating Microchip Technologys ENC424J600 and ENC624J600 stand-alone 10/100 Ethernet controllers. It is an expansion board compatible with many PICtail and PICtail Plus host boards, including the Explorer 16, PIC32 I/O Expansion Board, PICDEM.net 2 and PIC18 Explorer development boards. Features ENC624J600 10/100 Ethernet Controller with factory preprogrammed MAC address (see ENC424J600/624J600 Data Sheet (DS39935) for additional information) 25 MHz oscillator and integrated magnetic RJ-45 connector PICtail Plus Daughter Board edge contacts for SPI or PSP connection to Explorer 16 and PIC32 I/O Expansion Boards PICtail Daughter Board headers for SPI connection to PICDEM.net 2 and PIC18 Explorer Boards Configuration jumpers for PSP Modes 1, 2, 3, 4, 5, 6, 9 and 10 under PMP control with automatic pinout remapping Current monitoring jumper Ethernet crossover switches 3.3V LDO regulator with shutdown for very low Sleep current 3.3V to 5V SPI level translation for the PIC18 Explorer SSL encryption add-on software CD for the Microchip TCP/IP Stack Getting Started The Fast 100 Mbps Ethernet PICtail Plus Daughter Board must be plugged into a Microchip Explorer 16, PIC32 I/O Expansion Board (with suitable PIC32 Starter Kit), PICDEM.net 2 or PIC18 Explorer development board. However, before making any connections, ensure that the JP2, I SENSE, jumper has a shunt installed, shorting the two pins. The connection to the host motherboard differs based on the interface mode desired and motherboard type. Explorer 16 For purposes of getting started, use the ENC624J600 in SPI mode. To do this, insert the Fast 100 Mbps Ethernet PICtail Plus J2 side edge contacts into the topmost position of the J5 slot on the Explorer 16. Pin 1 on J2 of the PICtail Daughter Board should align with Pin 1 on J5 of the Explorer 16. The Ethernet cable will connect to the PICtail Daughter Board on the side closest to the Explorer 16 Boards four push buttons. PIC32 I/O Expansion Board The PIC32 I/O Expansion Board is very similar to the Explorer 16. If using a PIC32MX360F512L based Starter Kit, insert the Fast 100 Mbps Ethernet PICtail Plus J2 side edge contacts into the topmost position of the J4 or J2 slots on the PIC32 I/O Expan- sion Board. Pin 1 of J2 on the PICtail Daughter Board should align with the Pin 1 slot on the PIC32 I/O Expansion Board. If using a PIC32MX460F512L based PIC32 USB Starter Board, insert the PICtail Daughter Boards J2 connector into the middle position of J4 or J2. This will result in Pin 1 of J2 on the PICtail Daughter Board aligning with Pin 33 on the PIC32 I/O Expansion Board. PICDEM.net 2 The PICDEM.net 2 uses the PICtail Daughter Board thru-hole headers to interface using SPI mode. To make this connection, insert the Fast 100 Mbps Ethernet PICtail Plus J4 right angle header into the J5 female header on the PICDEM.net 2. Pin 1 on J4 of the PICtail Daughter Board, labeled RE2, must align with Pin 1 on J5 of the PICDEM.net 2 (also labeled RE2). This correct orientation does not connect the 2x3 J3 header to anything. The Ethernet cable will enter the PICtail Daughter Board from the same PICDEM.net 2 board edge that contains the two 10Base-T Ethernet jacks. 1PIC18 Explorer The PIC18 Explorer uses the PICtail Daughter Board thru-hole headers to interface using SPI mode, much like the PICDEM.net 2 connection. Insert the Fast 100 Mbps Ethernet PICtail Plus Daughter Board J3 and J4 right angle headers into the J9 and J3 female headers on the PIC18 Explorer, respectively. Pin 1 on J3 of the PICtail Daughter Board, labeled ADJ, must align with Pin 1 on J9 of the PIC18 Explorer (also labeled ADJ). After appropriately connecting the PICtail Daughter Board to the host motherboard, apply power to the host motherboard. If an Ethernet cable is attached and a link partner is also attached at the far end of the cable, the green Ethernet link status LED will automatically turn on. The orange or amber RX/TX activity LED will also blink if Ethernet traffic is sent to the PICtail Daughter Board. If the link LED does not light as expected, it is possible that the TX and RX Ethernet data pairs are swapped. To test this, a crossover Ethernet cable could be used, or appropriate firmware may be written, to toggle the MDIX control signal which will swap the TX and RX data pairs on the PICtail Daughter Board. Further evaluation will require the use of a TCP/IP Stack software library running on the host motherboard to appropriately control the Ethernet interface. Microchip TCP/IP Stack, Version 5.00 and later, can be used with this PICtail Daughter Board. The latest Microchip TCP/IP Stack version should be downloaded from the Microchip web site at www.microchip.com/tcpip. After obtaining and installing the stack, further getting started information is available in the TCP/IP Stack Help. Instead of building the stack, it is strongly recommended that first time testing be done using one of the stacks precompiled .hex files, if available, for the hardware and interface mode in use. Schematic and Bill of Materials The Fast 100 Mbps Ethernet PICtail Plus schematic and bill of materials are not provided here. They may be obtained from the Microchip web site at www.microchip.com/ethernet or by installing the latest Microchip TCP/IP Stack available from www.microchip.com/tcpip. Jumper Configuration The Fast 100 Mbps Ethernet PICtail Plus board has seven jumpers that control the opera- tional mode of the ENC624J600 and enable various features. The jumper functions are summarized in the following table: Jumper Functions Jumper Type Description JP2 Bridge ENC624J600 Power Control and Current Sense JP3 Bridge ENC624J600 CLKOUT Enable to PICtail Interface JP7 Bridge PIC MCU PMP PMA<x:8> to ENC624J600 AD<x:8> Connection Enable JP8 Bridge PIC MCU PMP PMA<x:8> to ENC624J600 A<x:8> Connection Enable JP9 2-Way ENC624J600 PSPCFG2 and Pinout Control JP10 2-Way ENC624J600 PSPCFG3 and Pinout Control JP11 2-Way ENC624J600 PSPCFG1/PSPCFG4 and Pinout Control JP2 JP2 lies directly in series with the +3.3V power supply for the ENC624J600 and Ethernet magnetics (3V3ETH). To power the ENC624J600 from an external source, remove the JP2 shunt and connect an external power supply to the red 3V3ETH Test Point (TP2). To measure the ENC624J600 and magnetics current usage, replace the JP2 shunt with a cur- rent meter. Because the Ethernet solution will draw in excess of 200 mA when all features are enabled, apply caution before attempting to measure the current using a 200 mA fused current measurement scale, available on many handheld multimeters. For normal device operation, JP2 must be shorted by a jumper shunt. 2