SAM E54 Xplained Pro has several resistors that can be used to disconnect I/O pins of the ATSAME54P20A from connectors and on-board ICs, and to disconnect power signals.
Info: Note
that there are some resistors that aren't mounted by default on the kit listed in the
table below.
| Designator | Value | From | To | Comment |
|---|---|---|---|---|
| J101 | cut-strap | VCC_P3V3 | VCC_P3V3_CM_IN | ATSAME54P20A, peripherals and connectors power supply |
| R101 | 0Ω | U100 OUT | VCC_CM_P3V3 | XAM power supply |
| R103 | 0Ω | U100 OUT | VCC_EDBG_P3V3 | EDBG power supply |
| R205 | 0Ω [N.M.] | J406 PCC DATA04 | PA20 SDHC CMD | Allows complete or partial disconnect of header J406, Parallel Capture Controller, header from ATSAME54P20A, and shared signals. Remove the mounted resistors and mount the unmounted resistors if using the PCC header. |
| R206 | 0Ω [N.M.] | J406 PCC DATA05 | PA21 SHDC CK | |
| R207 | 0Ω [N.M.] | J406 PCC DATA06 | PA22 I2C HS SDA | |
| R208 | 0Ω [N.M.] | J406 PCC DATA07 | PA23 I2C HS SCL | |
| R308 | 10kΩ | PCC DATA0 | QTouch Button | |
| R621 | 0Ω | PA17 ETH GTXEN | PHY_TXEN | |
| R622 | 0Ω | PA18 ETH GTX0 | PHY_TXD0 | |
| R623 | 0Ω | PA19 ETH GTX1 | PHY_TXD1 | |
| R624 | 0Ω | PA13 ETH GRX0 | PHY_RXD0 | |
| R625 | 0Ω | PA12 ETH GRX1 | PHY_RXD1 | |
| R626 | 0Ω | PA15 ETH GRXER | PHY_RXER | |
| R628 | 0Ω | PC12 ETH GMDIO | PHY_MDIO | |
| R629 | 0Ω | PC11 ETH GMDC | PHY_MDC | |
| R630 | 0Ω | PA14 ETH GTXCK | PHY_REFCLK | |
| R609 | 4.7kΩ [N.M.] | PHYAD | VCC_TARGET_P3V3 | Configuration for default start-up conditions for the Ethernet PHY. |
| R616 | 1kΩ | PHYAD | GND | |
| R613 | 4.7kΩ [N.M.] | PME_EN | VCC_TARGET_P3V3 | |
| R618 | 1kΩ [N.M.] | PME_EN | GND | |
| R605 | 4.7kΩ | ANEN_SPEED | VCC_TARGET_P3V3 | |
| R619 | 1kΩ | ANEN_SPEED | GND | |
| R802 | 39Ω | EDBG TARGET RESET | TARGET MCU RESET | Debug interface from the EDBG to the ATSAME54P20A |
| R803 | 0Ω | EDBG SWCLK | PA30 SWCLK | |
| R824 | 0Ω | EDBG SWDIO | PA31 SWDIO | |
| R827 | 0Ω | EDBG SWO | PB30 SWO | |
| R808 | 0Ω | EDBG CDC RX | PB25 UART TX | EDBG CDC and DGI interfaces to the ATSAME54P20A |
| R809 | 330Ω | EDBG CDC TX | PB24 UART RX | |
| R810 | 330Ω | EDBG DGI_GPIO0 | PC16 GPIO | |
| R811 | 330Ω | EDBG DGI_GPIO1 | PC17 GPIO | |
| R813 | 0Ω | EDBG I2C SDA | PD08 I2C SDA | |
| R814 | 0Ω | EDBG I2C SCL | PD09 I2C SCL | |
| R815 | 330Ω | EDBG SPI MISO | PC07 SPI MISO | |
| R816 | 0Ω | EDBG SPI MOSI | PC04 SPI MOSI | |
| R817 | 0Ω | EDBG SPI SCK | PC05 SPI SCK | |
| R818 | 0Ω | EDBG SS | PD01 SPI SS | |
| R825 | 330Ω | EDBG DGI_GPIO2 | PC18 GPIO | |
| R826 | 330Ω | EDBG DGI_GPIO3 | PB31 GPIO | |
| R812 | 0Ω | TARGET RESET SENSE | TARGET_MCU_RESET | Reset sense signal to EDBG, used to detect external resets |
Figure 1. Assembly Drawing Top
Figure 2. Assembly Drawing Bottom
