Datasheet

Signal Interface

The pinout of the Fast 100 Mbps Ethernet PICtail Plus depends upon the jumper settings

and which physical connector is used.

PICtail Daughter Board Dual Row Right Angle Header (J3, J4, J5)

The J3 and J4 headers are designed to provide an SPI interface to the PIC18 Explorer and

PICDEM.net 2 Development Boards. The J5 connector is not used; holes for J5 are present

only to aid physical alignment. The PICtail Daughter Board is not wired to permit the

ENC624J600 to interface to the PIC18 Explorer or PICDEM.net 2 using any Parallel modes.

When using the PICtail Daughter Board header, the pinout is as shown in the following table:

Pinout for the PICtail™ Daughter Board Header

If using the PIC18 Explorer with a PIM installed, be sure to check the PIM schematics for

any renamed or remapped pins.

PICtail Plus (SPI, J2)

The J2 board edge contacts are designed to provide an SPI interface to the Explorer 16 and

PIC32 I/O Expansion Boards. The J2 board edge is keyed such that there are only three

possible ways to insert it into the Explorer 16 and PIC32 I/O expansion slot:

1. Pin 1 on J2 aligns with Pin 1 on host motherboard – use SPI1 pinout.

2. Pin 1 on J2 aligns with Pin 33 on host motherboard – use SPI2 pinout.

3. Pin 1 on J2 aligns with Pin 94 on host motherboard – illegal, do not connect.

Signal Name on Board

Function

PICtail™

Daughter

Board

PIC18

Explorer

PICDEM.net™ 2

— 4 5VEXT +5V — 5V Power

— 5 GND GND — Ground Reference

5 — OSC1_PIC OSC1 — CLKOUT to PIC

MCU (optional)

(1)

8 — SI/RD/RW RC5/SDO1 SPI Data from PIC MCU

10 — SO_VPIC RC4/SDI1 SPI Data to PIC MCU

12 — SCK/AL RC3/SCK1 SPI Clock from PIC MCU

17 — SHDN

RB5 Shutdown from PIC MCU

19 — MDIX RB4 Ethernet Crossover from PIC MCU

21 — CS

/CS RB3 SPI Chip Select from PIC MCU

23 — INT

_VPIC RB2/INT2 Interrupt to PIC MCU

26 — VPIC V_VAR +5V 5V Power

28 — GND GND Ground Reference

Note 1: To enable CLKOUT, JP3 must be shorted.