The table below shows the pinout of the target end of the cable connected from the MPLAB ICE 4 unit to either an adapter board or a 40-pin connector on the target board.
| Pin | Description | Function(s) | Pin | Description | Function(s) |
|---|---|---|---|---|---|
| 1 | CS- A | Power Monitor | 2 | CS+ A | Power Monitor |
| 3 | CS- B | Power Monitor | 4 | CS+ B | Power Monitor |
| 5 | UTIL SDA | Reserved | 6 | UTIL SCL | Reserved |
| 7 | DGI SPI nCS | DGI SPI nCS,PORT6, TRIG6 | 8 | DGI SPI SCK | DGI SPI SCK, SPI SCK, PORT7, TRIG7 |
| 9 | DGI SPI MOSI | DGI SPI MOSI, SPI DATA, PORT5, TRIG5 | 10 | DGI SPI MISO | DGI SPI MISO, PORT4, TRIG4 |
| 11 | 3V3 | Reserved | 12 | GND | GND |
| 13 | DGI GPIO3 | DGI GPIO3, PORT3, TRIG3 | 14 | TRCLK | TRCLK, TRACECLK, |
| 15 | DGI GPIO2 | DGI GPIO2, PORT2, TRIG2 | 16 | GND | GND |
| 17 | DGI GPIO1 | DGI GPIO1, PORT1, TRIG1 | 18 | TRDAT3 | TRDAT3, TRACEDATA(3) |
| 19 | DGI GPIO0 | DGI GPIO0, PORT0, TRIG0 | 20 | GND | GND |
| 21 | 5V0 | Reserved | 22 | TRDAT2 | TRDAT2, TRACEDATA(2) |
| 23 | DGI VCP RXD | DGI RXD, CICD RXD, VCD RXD | 24 | GND | GND |
| 25 | DGI VCP TXD | DGI TXD, CICD TXD, VCD TXD | 26 | TRDAT1 | TRDAT1, TRACEDATA(1) |
| 27 | DGI I2C SDA | DGI I2C SDA | 28 | GND | GND |
| 29 | DGI I2C SCL | DGI I2C SCL | 30 | TRDAT0 | TRDAT0, TRACEDATA(0) |
| 31 | TVDD PWR | TVDD PWR | 32 | GND | GND |
| 33 | TDI IO | TDI IO, TDI, MOSI | 34 | TMS IO | TMS IO, SWD IO, TMS |
| 35 | TPGC IO | TPGC IO, TPGC, SWCLK, TCK, SCK | 36 | TAUX IO | TAUX IO, AUX, DW, RESET |
| 37 | TVPP IO | TVPP/MCLR, nMCLR, RST | 38 | TPGD IO | TPGD IO, TPGD, SWO,TDO, MISO, DAT |
| 39 | TVDD PWR | TVDD PWR | 40 | TVDD PWR | TVDD PWR |